基于控制容积面值的对流扩散差分格式  

Convection-diffcusion Difference Scheme Based on Control-volume Values

作　　者：陈鸿伟[1] 杨官平[1] 杨勇平[1] 王顶辉[2] 

机构地区：[1]华北电力大学,河北省保定市071003 [2]北京国华电力有限责任公司,北京市宣武区100025

出　　处：《中国电机工程学报》2007年第5期105-110,共6页Proceedings of the CSEE

基　　金："电站设备状态监测与控制教育部重点实验室"项目资助

摘　　要：提出了基于控制容积面值的对流扩散差分格式SCVFV,系统地阐述了SCVFV格式的基本思想,给出了SCVFV插值公式的通用表达式,推导了直角坐标系下完整的SCVFV格式的表达式,从理论上分析SCVFV格式的精度、守恒性及反伪扩散性。采用SCVFV格式和CIMPLE算法对带运动顶盖封闭方腔内的三维层流流场进行了数值计算,得到与实验结果比较一致的计算结果。计算结果表明,SCVFV格式具有较高的精度,是一种值得在工程上推广使用的对流扩散差分格式。The SCVFV（the convection-diffusion difference scheme based on control-volume face values） scheme was put forward. The theory of the SCVFV scheme was systematically elaborated. The general interpolation formula of the SCVFV scheme was given. The formulas of the SCVFV scheme based on the Cartesian coordinate were derived. The precision, the mass conservation property and the preventability of the false-diffusion of the SCVFV scheme were theoretically analyzed. The SCVFV scheme and the CIMPLE algorithm were applied to the numerical simulation of the three-dimensional laminar flow field in the lid-driven cavity. The calculation results show that the SCVFV scheme possesses higher precision and is suitable to be widely used in engineering.

关 键 词：对流扩散差分格式 控制容积面值 CIMPLE算法 伪扩散 数值模拟 

分 类 号：TK32[动力工程及工程热物理—热能工程]