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Table of Content

      
    16 December 2009
    Volume 39 Issue 6
    Articles
    A new search method for a game tree
    ZHANG Ming-Liang, LI Fan-Chang
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  1-7. 
    Abstract ( 559 )   PDF (845KB) ( 2229 )   Save
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    A new search method was given for a game-tree with breadth-firstin the first layer nodes and continuously minimal window test by deep analysis on game-tree search algorithms. It was good for the application and the processof search was easier for control, and may build a smaller search tree than the minimalgame-tree in theory. Comparison experiments indicate that the efficiency of thistechnique outperforms the PVS and MTD(f) method. Another speriority is tooptimize a game-tree by an iterative-deepening search, and to make the overall efficiency of iterative-deepening exceed a one-off game tree search.

    An improved immune clonal selection algorithm
    LIU Qiong, WU Xiao-Jun
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  8-12. 
    Abstract ( 420 )   PDF (865KB) ( 1640 )   Save
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    Aiming at the slow convergence speed of the traditional immune clonalselection algorithm (ICA), an adaptive immune clonal selection algorithm without memory(AICA)and adaptive immune clonal selection algorithm with memory(AICAM)are proposed respectively based on the combination of the adaptive algorithm of clona probability, immune probability, and group disaster algorithm. The two proposed algorithms have been applied to the TSP problem. The application of the group disaster algorithm can enhance the diversity of the population and to some extent avoid premature problems. The adaptive algorithm has strong global search ability andweak local search ability at early evolution. Global search ability is weakenedand local search ability is enhanced with the process of evolution in order to find the global optimal point. Simulation results indicate that compared with thetraditional immune clonal selection algorithm(ICA),the proposed algorithms can enhance the diversity of the population, avoid premature problems, and can to some extent accelerate convergence speed.

    Survey of outlier detection technologies
    CHEN Bin, CHEN Song-Can, PAN Zhi-Song, LI Bin
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  13-23. 
    Abstract ( 927 )   PDF (1025KB) ( 3848 )   Save
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    Outlier detection aims to detect those data that significantly deviate from the expected behavior, and thus is widely applied in many fields, such as, machine fault detection, intrusion detection, fraud detection and data preprocessing. Hence, there exist many generic and special algorithms for outlier detection under the unsupervised and supervised learning framework. But up to now, there still has been no clear classification in this aspect. To provide a structural view, the review of the state-of-the-art statistics-based methods for outlier detection was focusedon, and a simple classification was given in this aspect. Moreover,the equivalence between some outlier detectors in depth is particularly discussed.

    A new approach for solving continuous optimizationusing ant colony optimization
    SUN Hai-Ying, CHEN Ling
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  24-30. 
    Abstract ( 430 )   PDF (682KB) ( 1110 )   Save
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    A new approach was proposed for solving continuous optimization problems using ant an colony optimization(ACO) algorithm. The method maintains the framework of the classical ant colony algorithm, and replaces discrete summation by the continuous integral, and replaces discrete frequency distribution by continuous probability distribution in the ant selecting probability formula. The direction towards the maximum in each dimension was used as the heuristic information guiding the ants’ searching. Experimental results on benchmarks show that our algorithm not only has faster convergence speed but also effectively improves the accuracy of solution and enhances its robustness.

    A LDA-based weighted null space algorithm in face recognition
    ZHANG Yu-Hua, WANG Xin
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  31-34. 
    Abstract ( 385 )   PDF (771KB) ( 2077 )   Save
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     Linear discriminant analysis(LDA) often encounters a small-sample-size(SSS) problem when used in face recognition because there are not enough  trainingsamples and the within scatter matrix is singular. The traditional LDAbased null space algorithm can effectively avoid the SSS problem by first removing the null space of totalscatter matrix. A new feature extraction method called weighted null space was proposed, and the selection of weight parameters was discussed. Experimental results on face databases demonstrated its validity.

    Adaptive stabilization for a class of uncertain high-orderstochastic nonlinear systems
    ZHANG Jian, LIU Yuan-Gang
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  35-47. 
    Abstract ( 427 )   PDF (460KB) ( 1103 )   Save
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    This paper is devoted to solvingthe global stabilization problem viastatefeedback and adaptive technique for a class of uncertain highorder stochastic nonlinear systems. Although much effort has been made for deterministic ones, the problem is significant and deserves attention since it involves the effects caused by the stochastic disturbance and, for which, an appropriate control Lyapunov  function should be twice continuously differentiable and hence is moredifficult to find. By introducing a novel control Lyapunov  function and using the method of adding a power integrator, an adaptive statefeedback continuous controller is successfully designed, which guarantees that the original system states are globally asymptotically stable in probability while the other closedloop signals are globally stable in probability. A simulation example is provided to illustrate the effectiveness of the proposed approach. 

    Control and simulation of position servo systemwith low speed based on ADRC
    YANG Fu-An, LI Yi-Bin, RUAN Jiu-Hong, RONG Hua-Wen, SONG Dui
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  48-52. 
    Abstract ( 390 )   PDF (1308KB) ( 1384 )   Save
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    The phenomenon of nonlinear friction, disturbance and perturbation of the system, will have bad influence on precision.The control method forthe positionservo system with low speed was studied. First the ADRC (active disturbance rejection control) was introduced. The control system was developed based on the Stribeckfriction model and ADRC, and the means for adjusting the parameters of the controller were given in succession. Some simulation results were given compared with the PDcontrol and Sliding model control. These results show that the controller ensures good dynamic and static characteristics, and very good robustness under inner perturbation and external disturbance with nonlinear friction considered

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    Algorithm for generalized disjunctive programming model of production scheduling
    JIA Mao-Sen, GUO Qiang-Jiang, ZHANG Bin
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  53-57. 
    Abstract ( 395 )   PDF (293KB) ( 2251 )   Save
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    The character of usingsymbols to express the logic relation in the GDP model was fully considered. A new logicbased branch and bound algorithm was proposed. First, some Boolean variables were determined by using technique character and the principle of choosing branch. Then branch strategies were used to determine the relationship between logic variables. Finally, other Boolean variables were determined by using logic reasoning. A typical batch process productionscheduling model was solved using detail steps of the algorithm, and the results were analyzedand explained. The simulation results show that solution efficiency can be improved because a lot of branches are pruned through logic branches and reasonable use of the relations among the Boolean variables in the model, and the optimum can be obtained after a few nodes are examined.

    Analysis of pulse transit time variability based on LZ complexity
    LIU Cheng-Yu, YANG Jing, LI Bin, SUN Chu-Ran, LIU Chang-Chun
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  58-62. 
    Abstract ( 371 )   PDF (920KB) ( 1749 )   Save
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    Aiming at the problem that the traditional method for calculating pulse transit time (PTT) is not accurate, a new method for calculating heartradial pulse transit time (hrPTT) based on the signal physiological significance is proposed. It can accurately acquire the hrPTT sequence. At the same time, the research improves the binarization method in the LZ complexity algorithm and itproposes a new binarization method based on the moving window mean value. Based on the different binarization methods in LZ complexity algorithm, the research defines three kinds of the LZ complexity named D1, D2 and D3. Using the three LZ complexities, [JP2]it analyses 30 cases of the normal group and hypertension group. The results show that the LZ complexity D3, which is based on the moving window mean value, can give the best discrimination of the normal group and hypertension group.

    A new lattice model of traffic flow with the effects of relative current
    LIU Tao, JIA Lei, ZHU WenXin
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  63-67. 
    Abstract ( 318 )   PDF (1188KB) ( 1495 )   Save
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    Abstract: The forward looking lattice model of traffic flow is extended to take the backward looking effect and the relative current effect into account. The stability, neutral stability and instability conditions are obtained by the use of the linear stability theory. The stability of the uniform flow is strengthened due to the effects of the backward looking and the relative current. The performances of several traffic flow models are investigated analytically and numerically. The results indicate that by increasing the strengths of the backward looking effect and the relative current effect, the stable region increases and the traffic jam is effectively suppressed.

    Compton scattering based method of objects thickness
    ZUO Kai, SUN Tong-Jing, LI Zhen-Hua
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  68-71. 
    Abstract ( 389 )   PDF (1382KB) ( 1889 )   Save
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    A new objects thickness measurement methodwas proposed for the fact that the attenuation coefficient could not be deriveddirectly in the detection process. Applying the X-ray attenuation principle in industrial CT and the Compton scattering effect appearing inside high-energy photons of theobjects, a functional relationship between the object density and the attenuation coefficient was built and, based on this, the accurate thickness of objects can be calculated rapidly. A simulation was given to show the effectiveness of the proposed method.

    Three-dimensional simulation of rock breaking by TBM cutter
    TAN Jing, ZHANG Kuai, JIA Yi-Min, WANG Kai, NIE Wei
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  72-77. 
    Abstract ( 320 )   PDF (1210KB) ( 2063 )   Save
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    The  GTK+ and VTK programming based on Python and its application
    LI Xin-Cheng, SUN Dian-Zhu
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  78-81. 
    Abstract ( 451 )   PDF (432KB) ( 1767 )   Save
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    The technology of the GTK+graphical library and the VisualizationToolKit (VTK) based on Python was proposed, which includes four steps: first, the graphical user interface was built by user interface builder for GTK; second, the GTK+and VTK functions interface was encapsulated by Python language; third, the VTK rendering window was embedded in GTK+interface; fourth, the function modules of system were realized by C/C++language. It was proved that the application of the technology could quickly and efficiently obtain the GUI system which had strong adaptability and portability.

    Investigation of thickness distribution of incrementally formed sheet metal parts
    WEI Hong-Yu, GAO Lin, LI Long-Gao, ZHOU Wan-Lin
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  82-87. 
    Abstract ( 354 )   PDF (1080KB) ( 1170 )   Save
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    Optimization analysis for bus body structure in multi-load cases
    CHEN Guang, CUI Ling, GAO Yun-Kai
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  88-91. 
    Abstract ( 350 )   PDF (1266KB) ( 1245 )   Save
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     A finite element model of the bus body frame was built and vibration modal analysis and static analysis were performed on the body frame structure. Then, the section sizes optimization was analyzed under three different load cases and the best bus body structure was obtained. The results confirmed that the synthetic optimization design method could carry out the optimization analysis in multi-load cases for bus body structure and lighten the weight of bus framework, and the bus body performance indexes such as strength, stiffness and mode.

    Smoothed particle hydrodynamics for numerical simulation ofthree-dimensional free surface flow
    JIAO Pei-Gang, ZHOU Yi-Qi, WANG Xi-Cang
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  92-96. 
    Abstract ( 333 )   PDF (1859KB) ( 1333 )   Save
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    An efficient smoothed particle hydrodynamics (SPH) method for three-dimensional free surface flow was proposed. The  3D SPH code fordam break was implemented, the simulation results of 3D SPH accorded with that of the 2D SPH results and the experimental results. Numerical simulation results showed that major physics of thedam break could be well captured in the simulation. The proposed SPH method could  be easily extended to deal with many other problems of threedimensional liquid flow if simulation control parameters such as input condition, boundary conditionand corresponding equation of state were properly defined.

    Non-dimensional design method  of pressure vessels   and its application (Ⅰ)
    XU Xiao-Dong, LIU Yan, WANG Wei-Jiang, CHEN Tong-Lei, LIU Qi
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  97-100. 
    Abstract ( 472 )   PDF (439KB) ( 1323 )   Save
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    The non-dimensional design method of pressure vessels may simplify the design process and reduce the workload, and can be substituted for the traditional method. The theory and steps of the non-dimensional design method were presented based on the present design methods. For this method, two kinds of non-dimensional parameters were constructed through introducing fiducial dimensionand pressure, of which the comparative computing pressure would be the main factor. According to NDDM, several typical structures of the main parts were  analyzedand translated. The non-dimensional formula of the cylindrical shell, hemisphericalhead and fastener structure were obtained. The important contents in the developing step were also finished, which were the basis of the NDDM application step.

    Non-dimensional design method of pressure vessels  and its application(Ⅱ)
    XU Xiao-Dong, LIU Yan, WANG Wei-Jiang, CHEN Tong-Lei, LIU Qi
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  101-104. 
    Abstract ( 454 )   PDF (256KB) ( 1114 )   Save
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    The calculation results of the developing step in the nondimensional design method can be conveniently and directly applied to designing pressure vessels. Using the obtained formula of the nondimensional design method,the results of the cylindrical shell, hemispherical head and fastener structure were attained, which were the relational formula or curves between comparative size and computing pressure. In order to validate the results, two pressure vessels with thesame structure and different computing pressure and size were all designed. The correctness was  checked by the present standards. 

    Study of the mechanical response of semi-rigid pavement structure under-different tire pressure distributions
    TAO Tie-Yong, TIAN Teng-Hui
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  105-110. 
    Abstract ( 398 )   PDF (2246KB) ( 1171 )   Save
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    In the light of the irregular tire contactshape and the non-uniformity of wheel pressure,  the mechanical response of semi-rigid pavement structure was studied by using the three-dimensional finite element method with three types of load distribution as uniform circular load, uniform rectangular load and non-uniform rectangular load. The results showed that both tire contact shape and non-uniformity of wheel pressure had significant impacts on the mechanical responseof semi-rigid pavement structure, particularly sensitive to the shear indexes underoverloading conditions. Uniform circular assumption and uniform rectangular assumption could not accurately reflect the shear indexes on the effect of overload, compared with a good response under the non-uniform rectangular assumption. Two suggestions where proposed to estimate the mechanical response of semi-rigid pavement structure. The conventional uniform circular load assumption can be used to analyze the mechanical response of pavement structure under the standard axle loadand the underload conditions. The non-uniform rectangular loadassumption should beused to analyze the mechanical response under overload conditions, considering the sensitivity of shear indexes.

    Back analysis of 3D initial geostress and the application of SPSS
    ZHENG Chun-Mei, SHU Wei-Shen, ZHANG Jiang-Yong
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  111-115. 
    Abstract ( 453 )   PDF (702KB) ( 2018 )   Save
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    Based on the measured data of geostress and engineeringgeological conditions at a hydropower station, possible factors affecting the initial geostress field were discussed. Under individual effect of factors, the established 3D simplified geological model was calculated by FLAC3D. Then, a multivariate regression model was established between the measured and calculated results of geostress at measurement points. Through multiple regression analysis, the optimumregression coefficient could be derived. Thereby, the distribution tendency of the initial geostress field can be obtained. In order to show the influence of area coverage on initial geostress, a large and small model in the engineering region were  separately calculated. The numerical calculation results indicate that it is necessary to select a large model for the geostress regression of engineering in the alp region. The function of initial stress in the engineering region can be obtained from the statistical analysis of stress by using SPSS.

    Study of full-face curtain grouting on water-burst fault 
    F4-4 subsea tunnel in Qingdao Jiaozhou bay
    ZHAO Ji-Ceng
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  116-120. 
    Abstract ( 433 )   PDF (1032KB) ( 1405 )   Save
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    The fault crushed zone F4-4 of the Qingdao Jiaozhou Bay subsea tunnel, is seriously influenced by the earth construction. And the stave rock, which has low intensity existence together with the high hydraulic pressure, is bad for thestability, so the possibility of waterburst under violent geological condition is high, and the construction risk is enormous. The fullface curtain grouting technical parameters was determined by  onsite test.The main tunnel area grouting reinforcement was 5?m away from the tunnelexcavation contour lines. The grouting proliferation radius of the upper crosssection was 15m, and the proliferation grouting radius of the lower crosssection was 20?m. The grouting endpoint radius was 35?m, and the watercement ratio was 1∶1, and the grouting pressure was 3~4?MPa. The advancing grouting was used in constructiontechnology. Finally, the fullface curtain grouting plan and measure was successfully applied in the design and construction in the right line of the Qingdao Jiaozhou Bay subsea tunnel for passing through the No. F4-4 fault. This fullface curtain grouting has significance to similar project.

    Analysis of the key influencing factors of structure layer stress of asphalt pavement in goaf
    JI Hui, SHANG Qiang-Sen, SHU Hai-Bei, CUI Xin-Zhuang, LIU Chao
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  121-124. 
    Abstract ( 349 )   PDF (935KB) ( 1076 )   Save
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     Based on the road construction project in a coal mine,  three major characteristic values  were selected, which included theslope, thecurvature, and the horizontal deformation as evaluation indicators. The main calculation model that imposed the convex settlement curve at the bottom of the embankment was determined according to the finite element calculation and analysis. Finally, was studied the impact of each characteristic valueon the mechanical properties of road structure layers was studied, and the conclusion showed that the curvature was the most significant factor.

    Analysis of the cause of bursting cracks in the bottom slab of a continuous rigid bridge based on the mixed finite element method
    LIN Xin-Yuan, ZHANG Feng
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  125-129. 
    Abstract ( 421 )   PDF (1189KB) ( 1326 )   Save
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    The accidents of bursting and cracks of the bottom plate of somecontinuous rigid bridges often occur during the stretching of the prestressing tendon and the running stage. Based on the principle of the mixed finite element, the nodes'constraint equations at the interface between beam elements and solid elements were derived. A sixspan prestressed continuous rigid frame bridge was analyzed by themixed finite element method, and the stress of the bottom flange was calculated. With the numerical solution test, it was found that the mixed finite element method had the characteristics of high precision solution and less elements. Based on computed results, a conclusion was  drawn that the radial force which was caused by the prestressing tendon settling according to the linetype of bottom plate was the main reason, and the  vertical tensile stress of concrete near bellows at webs of box girders was morethan at other sites of the bottom flange.

    Voltage stability index based on equivalent electrical distance
    WANG Jian, ZHANG Ren-Yin, ZHANG Lei
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  130-134. 
    Abstract ( 379 )   PDF (314KB) ( 1187 )   Save
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    The main problem of static voltage stability in power systemsis to determine the critical bus, the critical voltage and the voltage stability margin. Based on the power transmission path theory and the equivalent theory,the  local voltage stability index was used to confirm the voltage stability bus, and the equivalent electrical distance was used to obtain the voltage stabilitymargin. The practical results of IEEE 39 nodes system and Shandong power grid that this method was fast in computation and more suitable for on line voltage security monitor.

    Study of power system probability security assessment incomplex power injection space
    DIAO Wen-Zhong, SHI Jun
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  135-138. 
    Abstract ( 290 )   PDF (458KB) ( 1465 )   Save
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    To make up for the shortage of the power system security analysis, the power system’s probabilistic safety analysis was studied. An indicator model was introduced which showed the probability of the power system security in the complex power injection space. The impact of the reactive power injection and the proportion of induction motor load in uncertainty were considered at the base of existing research results. And according to the migration characteristics of the complex power dynamic security region into the space of hyperplane, the calculation method to simplify indicators was deduced. Simulation shows that the indicator isable to fully reflect the security situation of the power system, and it shows rationality.

    Influence of unsteady term in the N-S equation on convergence of the SIMPLER algorithm
    LIU Xiang, SHI Ru-Chao, LIU Jie, GAO Meng, DIAO Yuan-Bin, SUN Feng-Zhong
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  139-142. 
    Abstract ( 305 )   PDF (1675KB) ( 1164 )   Save
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    For some cases, such as 2-D lid-driven cavity flow and backward-facing step flow, it is difficult to converge, when some high-order schemes are adopted. The influences of the unsteady term on convergence of the SIMPLER algorithm were discussed. In conclusion, the algorithm with a steady term could not converge with the high Re number, and the  convergence could be greatly improved by adopting the unsteady term.

    Numerical simulation of the convection boundary layer in air along a vertical heated plate
    YAN Li-Gui, FU Song
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  143-146. 
    Abstract ( 345 )   PDF (875KB) ( 1437 )   Save
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    In order to study the effect of wall temperature and freestream velocity on the characteristics of the boundary layer, the characteristic in a convection boundary layer in air along a vertical heated plate was numerically simulated with CFD (computational fluid dynamics) software. The different wall temperatures for natural convection and the freestream velocity for the combined convection were simulated by the standard kε mode1 and the SIMPLEC algorithm, and the flow fields information, such as distribution of velocity and temperature were computed and analyzed. The results showed that the effect of high temperature oncharacteristics of the boundary layer was quite small,  the thicknesses of velocity and thermal boundary layers decrease, and the maximum velocity increases with the freestream velocity increasing.

    A comparison study of two types of solar air collector performance
    XUE Yi-Bing, MENG Guang, ZHANG Le
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  147-149. 
    Abstract ( 416 )   PDF (1177KB) ( 1664 )   Save
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    A dynamic test of the heat-collecting efficiency of different types of collectors was carried out to study the heat-collecting efficiency of flat solar air heaters. The results showed that the temperature at the air outlet and theheat collecting efficiency of the solar air heater with a perforated absorber flat plate were apparently higher than those of the solar air heater with a nonporous corrugatedabsorber plate. Therefore, the former solar air heater was proved to be able toabsorb more radiant heat energy from the sun to increase the heat convection between the absorber flat plate and the air.

    Analysis of the temperature boundarylayer of unsteady natural convection in a solar chimney
    HE Yun, SU Xin-Wu, SUN Chu, XU Yong-Li
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  150-153. 
    Abstract ( 337 )   PDF (920KB) ( 1145 )   Save
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    The flow in a solar chimney was dominated by natural convectionboundarylayer flow. Because of the restrictions of the operational parameters and thestructural parameters, the development of the boundary layer is different from freespace. The effects of temperature boundary layer thickness were discussed by direct numerical simulation. The results showed that the boundary layer thikness could meet with certain quantitative relations with    (y/Ra)1/5 when the boundary layer can  freely develop and reach the steadystate stage, and the boundary layer thickness were relative to w, Ra when the boundary layer could not be freely carried out.

    Optimization and detection of crystal growth parameters
    SONG De-Jie
    JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE). 2009, 39(6):  154-158. 
    Abstract ( 377 )   PDF (403KB) ( 1183 )   Save
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    A system of optimization and detection of crystal growth parameters were developed with an industrial personal computer and Kingview 653 inorder to grow cadmium zinc telluride of good quality. The system could detect and save each temperature in the furnace, seed rod rotation mode, rate of verticalBridgman method, crucible position and temperature parameters. According to these values, the crystal growth quality and blemish could be analyzed. These results provided the reliable basis for improving the crystal growth project, enhancing crystal growth quality and optimizing control parameters.