基于改进SPH的皮肤表面血流模拟算法

doi:10.6040/j.issn.1672-3961.0.2015.222

山东大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (1): 22-27.doi: 10.6040/j.issn.1672-3961.0.2015.222

基于改进SPH的皮肤表面血流模拟算法

王娜¹,陈国栋²,陈怡²

1.福建师范大学福清分校电子与信息工程学院, 福建福清 350300;
2.福州大学物理与信息工程学院, 福建福州 350116

收稿日期:2015-07-10 出版日期:2016-02-20 发布日期:2015-07-10
作者简介:王娜(1978-),女,河北保定人,副教授,硕士,主要研究方向为计算机图形学和虚拟现实.E-mail:studyres@126.com
基金资助:
国家自然科学基金资助项目(61471124);福建省自然科学基金项目(2013J05090);福建省科技计划重点项目(2011H0027);福建省中青年教师教育科研项目(JA15574)

A bleeding simulation algorithm for skin surface based on improved SPH method

WANG Na¹, CHEN Guodong², CHEN Yi²

1. School of Electronics and Information Engineering, Fuqing Branch of Fujian Normal University, Fuqing 350300, Fujian, China;
2. College of Physics and Information Engineering, Fuzhou University, Fuzhou 350116, Fujian, China

Received:2015-07-10 Online:2016-02-20 Published:2015-07-10

摘要/Abstract

摘要： 针对现有血流真实感绘制中采用的动力学模型精度较低的问题,提出一种基于改进光滑粒与动力学(smoothed particle hydrodynamics, SPH)的皮肤表面血流模拟算法。首先对血液模拟算法进行分析,选取Casson流体作为血液流动现象的流体动力学模型;然后,根据Casson流体的动力学方程的特点,对传统的SPH方法进行改进,并用改进后的方法对血液流动现象进行数值计算;最后将得到的血液粒子运动学信息用于模拟皮肤表面的血流过程。试验结果证明,该方法降低了传统方法的复杂度,提高程序的计算精度,为虚拟手术中对皮肤切口出血的仿真研究提供了新思路。

关键词: Casson模型, 虚拟手术, 动力学模型, 光滑粒子动力学, 血流

Abstract: Aiming at low dynamic model precision problem of the current blood flow realistic graphics rendering methods, a bleeding simulation algorithm for skin surface based on improved SPH method was proposed. First, some blood flow simulation algorithms were analyzed and the Casson model was selected as the fluid dynamics model of blood flow. Second, according to the characteristics of the dynamic equation of Casson fluid, the traditional SPH method was improved. Third, the improved method was used to calculate the blood flow. Finally, the obtained blood particle kinematics information was used to simulate the flow of the skin surface. The experimental results showed that the improved SPH method could reduce the complexity of the traditional method and improve the accuracy of the program, which would provide a new method for the skin incision bleeding simulation in virtual surgery.

Key words: blood flow, dynamic model, Casson model, virtual surgery, smoothed particle hydrodynamics

中图分类号:

TP391.41

王娜,陈国栋,陈怡. 基于改进SPH的皮肤表面血流模拟算法[J]. 山东大学学报(工学版), 2016, 46(1): 22-27.

WANG Na, CHEN Guodong, CHEN Yi. A bleeding simulation algorithm for skin surface based on improved SPH method[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2016, 46(1): 22-27.

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基于改进SPH的皮肤表面血流模拟算法

A bleeding simulation algorithm for skin surface based on improved SPH method

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