基于SIMPLER与PISO的流场改进算法  

Iimproved method for flow field based on SIMPLER and PISO

作　　者：徐涛[1] 葛长江[1] 邹鹏[1] 徐天爽[1] 左文杰[1] 

机构地区：[1]吉林大学机械科学与工程学院,长春130022

出　　处：《吉林大学学报（工学版）》2009年第3期668-672,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：高等学校博士学科点专项科研基金项目(20050183018);吉林大学"985工程"项目

摘　　要：提出了一种用于求解传热与流动问题的新算法—SIMPLEXT方法。该算法采用SIMPLER算法思想耦合初始压力场和速度场,采用PISO算法策略来实现压力场和速度场同时更好地满足动量方程和连续性方程,且兼顾考虑邻点速度修正值对所计算点速度修正值的影响及源项与速度场之间的同步性。通过对方腔顶盖驱动流的数值模拟验证了算法及程序的可靠性和有效性,特别当网格加密到128×128以后,SIMPLEXT算法仍然收敛的突出优越性是SIMPLE等算法无法比拟的。A new method,SIMPLEXT,for heat transfer and flow field was proposed.In the SIMPLEXT method,the pressure field was determined by the SIMPLER algorithm,pressure field and velocity field which meet continuity equation and momentum equation can be obtained by the PISO algorithm.The influence of velocity correction on neighbors for velocity correction and the synchrony between source term and velocity field were considered.The reliability and validity of the presented procedure were verified by the numerical sim...

关 键 词：流体力学 SIMPLER算法 PISO算法 收敛性 可靠性 

分 类 号：O357.1[理学—流体力学]