摘要
以MIRA车体气动性能的风洞试验数据为基础,对采用大涡模拟方法解算非定常特征显著且具有大分离流动结构的近地钝体外部绕流场所涉及的迭代步数、时间步长、网格方案等影响因素开展研究.采用对比分析方法对3种亚格子湍流模型的计算准确性进行研究.提出适用于三厢车型的大涡模拟数值仿真策略.
Based on the wind tunnel test data of aerodynamic performance of MIRA vehicle body,the iteration step,time step,and grid scheme were researched when large eddy simulation was adopt to solve the obviously transient flow field with large separation structure around bluff body near ground.Meanwhile,the simulation accuracy of three subgrid scale turbulence models was studied using the comparative analysis method.Finally,the solving strategy of large eddy simulation was proposed which is applicable for the simulation of aerodynamic performance of notchback vehicle.
作者
朱晖
周永祥
杨志刚
史芳琳
ZHU Hui1,2,ZHOU Yongxiang3 , YANG Zhigang1,2, SHI Fanglin1,2(1. Shanghai Automotive Wind Tunnel Center, Tongji University, Shanghai 201804, China; 2. Shanghai Key Laboratory of Vehicle Aerodynamics and Vehicle Thermal Management Systems, Tongji University, Shanghai 201804, China; 3. Pan Asia Technical Automotive Center, Shanghai 201201, Chin)
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2018年第6期811-818,共8页
Journal of Tongji University:Natural Science
基金
上海市地面交通工具风洞专业技术服务平台(16DZ2290400)
同济大学教学改革研究和建设项目(1700104075)
关键词
大涡模拟
气动性能
数值仿真
large eddy simulation aerodynamicperformance
numerical simulation
