PC上基于LBM的汽车空气动力学应用和置信度检验
The Application and Confidence Level Test of Automotive Aerodynamics Based on LBM on PC
摘要:
随着LBM的不断推广，众多的使用者认为该方法占用过多计算机资源，其置信度和在PC上的可行性也有待验证。本文分别采用LBM和有限体积法计算了典型的汽车空气动力学问题，对比了两种方法的计算流程、结果、计算机资源占用和耗时。结果表明，在PC端上，LBM实现了汽车空气动力学问题的计算，发现格子的分布情况对计算结果有较大影响。流场结果表明，LBM与有限体积法的计算精度相当，在有些方面比有限体积法更有优势。
Abstract:
With the promotion of LBM, many users thought this method took up too many computer resources, and its reliability and feasibility on PC need to be verified. Based on LBM and FVM, this paper has calculated the typical vehicle aerodynamics, and compared the calculation process, the results, computer resources and computing time. The results showed that we can successfully make LBM computation on PC. Lattice distribution had a great influence on the calculation results. Flow field results show that the lattice Boltzmann method has the same calculation accuracy as finite volume method, and it has more advantages than finite volume method in some aspects.
参考文献
|
[1]
|
陈耀松, 单肖文, 陈沪东. 计算流体力学的新方向及其在工业上的应用[J]. 中国科学: 技术科学, 2007, 37(9): 1107-1116.
|
|
[2]
|
李人宪. 有限体积法基础[M]. 北京: 国防工业出版社, 2008.
|
|
[3]
|
王一伟, 王洋, 安亦然, 等. 基于LBM方法的高速列车空气动力学计算[J]. 中国科学: 技术科学, 2008, 38(11): 1795-1804.
|
|
[4]
|
葛钦钦. 基于格子Boltzmann理论的流场分析[D]: [硕士学位论文]. 镇江: 江苏大学, 2016.
|
|
[5]
|
李红群, 史冬岩, 王志凯, 等. 不同壁面绕流特性的格子Boltzmann模拟研究[J]. 计算力学学报, 2017, 34(2): 219-225.
|
|
[6]
|
Girimaji, S. (2011) Lattice Boltzmann Method: Fundamentals and Engineering Applications with Computer Codes. AIAA Journal, 51.
|
|
[7]
|
Lekkerkerker, H.N.W., Poon, C.K., Pusey, P.N., et al. (1996) Lattice BGK Models for Na-vier-Stokes Equation. Europhysics Letters, 6, 479-484.
|
|
[8]
|
杨红兵. 三圆柱绕流问题的格子Boltzmann方法研究[D]: [硕士学位论文]. 金华: 浙江师范大学, 2011.
|
|
[9]
|
Liu, M., Chen, X.P. and Kannan, N.P. (2012) Comparative Study of the Large Eddy Simu-lations with the Lattice Boltzmann Method Using the Wall-Adapting Local Eddy-Viscosity and Vreman Subgrid Scale Models. Chinese Physics Letters, 29, 104706-104710.
|