JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2010, Vol. 40 ›› Issue (2): 143-148.

• Articles • Previous Articles     Next Articles

3D numerical simulation of fluid flow and heat transfer in a circular tube with edge-fold-twisted-tape inserts


CUI Yong-zhang1,2, TIAN Mao-cheng1, LI Guang-peng2   

  1. 1. School of Energy ＆ Power Engineering, Shandong University, Jinan 250061, China;
    2. School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China
  • Received:2009-08-09 Online:2010-04-16 Published:2009-08-09

PDF (PC)

1575

Abstract:

A 3D numerical simulation was carried out to study the fluid flow and heat transfer enhancement characteristics of flue inside a circular tube with spiral-twisted-tape(STT) and edge fold-twisted tape(ETT)  inserts. An enhanced wall treatment, a differential formula for the effective viscosity to account for the low Reynolds number effects and modification for moderate swirling flow were adopted. Rearranged from 2300 to 5000, the Nu of tube with STT inserts is 21%～24％ higher than that of   circular tube， and the Nu of tube with ETT inserts is 25%～32％ higher than that of the circular tube. The pressure drop of the tube with ETT inserts is from 12Pa to 57Pa, which is 10%～18％ higher than that of STT inserts. The thermalhydraulic performance of ETT is from 120％ to 126％. The heat enhancement reasons of ETT inserts is the characteristic of periodic velocity increases and decreases within an edgefold length.

Key words:  edgefold-twisted-tape inserts, spiral-twisted-tape inserts, numerical simulation, heat transfer enhancement

[1] LIU Qiming, WANG Wenhui, PAN Yingnan, GAO Yaohui, ZHENG Chengcheng, HE Peng. Influence of thickness defects on the stability of the primary support structure and risk assessment [J]. Journal of Shandong University(Engineering Science), 2025, 55(5): 165-178.
[2] Yuxin WANG,Sizhong LÜ,Wang YAO,Chunjin LIN,Ming ZHANG,Zhaofeng LI,Jian ZHANG,Yansheng WANG. Parameter design and effect evaluation of pile side splitting grouting insilty clay stratum [J]. Journal of Shandong University(Engineering Science), 2023, 53(6): 70-81.
[3] Pengning GUO,Wei LIU,Hao YUAN,Shuo FENG,Yangang WANG. Analysis of screw extrusion dehydration efficiency based on micro element discrete model [J]. Journal of Shandong University(Engineering Science), 2023, 53(1): 114-121.
[4] Yiming ZHANG,Yunpeng LI,Jing LI,Junyu CONG. Development of numerical calculation for coupled multi-field problems in cracked/porous media [J]. Journal of Shandong University(Engineering Science), 2022, 52(6): 63-78.
[5] Weiqin ZHENG,Jie XU,Jie SUN,Ke WU. Mechanical characteristics of TBM tunnel segment in composite stratum [J]. Journal of Shandong University(Engineering Science), 2022, 52(4): 210-213.
[6] TIAN Li,Wenzhe BI,Sarim Saleem SIDDIQUI,Kaiyue LIU. Review on structural resistance to downburst wind loads [J]. Journal of Shandong University(Engineering Science), 2021, 51(5): 32-41.
[7] Wenjing DU,Junzhe ZHAO,Lixin ZHANG,Zhan WANG,Wanxiang JI. Review and prospect of the development of heat exchanger structure [J]. Journal of Shandong University(Engineering Science), 2021, 51(5): 76-83.
[8] LU Guangzhao, ZHOU Bo, XU Feng, SHANGGUAN Wei, WANG Gang, ZHANG Shubo. Stability analysis and construction mechanics of shallow buried bias tunnel openings [J]. Journal of Shandong University(Engineering Science), 2021, 51(4): 61-70.
[9] WANG Chunguo. Optimization of ventilation system of TBM tunnel construction and evaluation of dust suppression effect [J]. Journal of Shandong University(Engineering Science), 2021, 51(3): 52-60.
[10] Chunguo WANG. Study on full face hard rock tunnel boring machine through the overpass in composite stratum [J]. Journal of Shandong University(Engineering Science), 2021, 51(3): 45-51.
[11] SUN Jie, WU Ke, ZHENG Yang, LI Shuchen, YUAN Chao, WANG Xiuwei. Influence of TBM tunnel excavation at different positions on buildings [J]. Journal of Shandong University(Engineering Science), 2021, 51(1): 32-38.
[12] SU Sibo, WANG Guoqing, JIA Xianzhuo, LI Zhicong, HUANG Zhigang. Influence of shear span ratio on seismic performance of hollow pipe pier with slot connection [J]. Journal of Shandong University(Engineering Science), 2021, 51(1): 39-45.
[13] XU Zaigen, LIU Zhengwei, LIU Wenpeng, ZHOU Mengyao, LIU Juncai, TIAN Li. Calculation method of the single-double angle joints in transmission towers [J]. Journal of Shandong University(Engineering Science), 2021, 51(1): 87-93.
[14] CHEN Yucheng, WANG Zhaoyang, GUO Ming, LIN Peng. Influence of concealed karst cave on surrounding rock stability and its treatment technology [J]. Journal of Shandong University(Engineering Science), 2020, 50(5): 33-43.
[15] Jinsheng QI, Hongzhen CAO, Yan SHI, Wenjing DU, Zhan WANG. Optimization of the inner deflector of the shrimp-waist elbow [J]. Journal of Shandong University(Engineering Science), 2020, 50(5): 64-69.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] WANG Su-yu,<\sup>,AI Xing<\sup>,ZHAO Jun<\sup>,LI Zuo-li<\sup>,LIU Zeng-wen<\sup> . Milling force prediction model for highspeed end milling 3Cr2Mo steel[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2006, 36(1): 1 -5 .
[2] LI Kan . Empolder and implement of the embedded weld control system[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2008, 38(4): 37 -41 .
[3] SHI Lai-shun,WAN Zhong-yi . Synthesis and performance evaluation of a novel betaine-type asphalt emulsifier[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2008, 38(4): 112 -115 .
[4] KONG Xiang-zhen,LIU Yan-jun,WANG Yong,ZHAO Xiu-hua . Compensation and simulation for the deadband of the pneumatic proportional valve[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2006, 36(1): 99 -102 .
[5] CHEN Rui, LI Hongwei, TIAN Jing. The relationship between the number of magnetic poles and the bearing capacity of radial magnetic bearing[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2018, 48(2): 81 -85 .
[6] LI Ke,LIU Chang-chun,LI Tong-lei . Medical registration approach using improved maximization of mutual information[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2006, 36(2): 107 -110 .
[7] JI Tao,GAO Xu/sup>,SUN Tong-jing,XUE Yong-duan/sup>,XU Bing-yin/sup> . Characteristic analysis of fault generated traveling waves in 10 Kv automatic blocking and continuous power transmission lines[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2006, 36(2): 111 -116 .
[8] . [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2009, 39(1): 27 -32 .
[9] WANG Li-ju,HUANG Qi-cheng,WANG Zhao-xu . [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2006, 36(6): 51 -56 .
[10] SUN Dianzhu, ZHU Changzhi, LI Yanrui. [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2009, 39(1): 84 -86 .
Copyright 2018 © Editorial office of Journal of Shandong University (Engineering Science)
Supported by Beijing Magtech Co.Ltd