摘要
论述了细分网格模型在车身外流场仿真中的计算网格贴体性、仿真精度、建模改型效率以及设计运用方法。以一气动理想形体的风洞实验进行了实例验证。综合理论分析和实验得出:经表面特征修正后的网格模型具有类似NURBS模型的仿真精度,并具有较高的改型效率和自由度,如果和NURBS模型结合运用将能够满足汽车设计过程中对概念和工程的兼顾。
This paper discussed the following problems,such as computing meshing definition,simulation precision,modeling efficiency and design methods of the subdivision mesh model used in automobile flow field simulation.The wind tunnel test of an aerodynamics ideal model was taken as an example.It comes to that the simulation precision of subdivision mesh model after improving surface features is as good as NURBS model,at the same time it has the advantage of high modeling efficiency and unrestricted modification,in the design processes if it can be combined together with NURBS model,then the requests on both conception and engineering can be fulfilled.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2009年第23期2844-2849,共6页
China Mechanical Engineering
基金
国家863高技术研究发展计划资助项目(2007AA04Z122)
汽车车身先进设计制造国家重点实验室开放基金资助项目(30815005)
关键词
流场仿真
细分网格
NURBS
特征
flow field simulation
subdivision mesh
NURBS
feature
