一种基于非结构化网格的无压力型投影法  

Projection Method Based on Unstructured Grid

作　　者：李国杰 李杨[2] 王勇[2] 李建峰 张晓 王憨鹰[1] 黄萌 周丹丹 胡广涛[1] LI Guo-jie;LI Yang;WANG Yong;LI Jian-feng;ZHANG xiao;WANG HAN-ying;HUANG Meng;ZHOU Dan-dan;HU Guang-tao(School of Energy Engineering,Yulin University,Yulin 719000,China;Xi’an Thermal Power Research Insititute Co.,Ltd.,Xi’an 710054,China;Shaaxi Sijichun Clean Heat Source Co.,Ltd.,Xi’an 710061,China;Xi’an Modern Control Technology Research Institute,Xi’an 710065,China)

机构地区：[1]榆林学院能源工程学院,陕西榆林719000 [2]西安热工研究院有限公司,陕西西安710054 [3]陕西四季春清洁热源股份有限公司,陕西西安710061 [4]西安现代控制技术研究所,陕西西安710065

出　　处：《榆林学院学报》2022年第4期8-11,共4页Journal of Yulin University

基　　金：国家自然科学青年基金项目(52006188);陕西省教育厅一般专项项目(21JK1007)。

摘　　要：考虑到流动区域的复杂性及投影法求解非定常问题的高效性,本文发展了一种基于非结构化网格的无压力型投影法,使其能够完成复杂流动区域内非定常流动问题的高效求解。算法实施中,首先基于不包含压力项的预测方程完成中间速度求解,然后根据包含压力项的修正方程完成压力场求解,最后基于压力场对速度场进行修正。基于本文算法,对方腔顶盖驱动流典型算例进行了模拟分析,通过与前人结果对比,验证了本文算法的准确性。Given the complexity of the flow region and the high efficiency of the projection method for solving the unsteady problems,a pressure-free projection method based on unstructured grid is developed in this paper to complete the efficient solution of the unsteady flow problem in the complex flow region.In the implementation of the algorithm,the intermediate velocity is solved based on the prediction equation without pressure term,and then the pressure field is solved according to the correction equation with pressure term.Finally,the velocity field is corrected based on the pressure field.Based on this algorithm,a typical example of lid-driven cavity flow is simulated,and the accuracy of the algorithm is verified by comparing with the previous results.

关 键 词：非结构化网格 投影法 无压力型 顶盖驱动 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]