基于STAR-CCM+的进气道优化设计

王东，刘向东^*

同济大学汽车学院，上海  200092

摘要：为提高进气道设计效率，缩短开发时间，基于STAR-CCM+的进气道优化设计方法，建立汽油机进气道稳态参数化模型，利用STAR-CCM+ Design Manager中的Sherpa优化算法进行目标为y滚流比和进入燃烧室的新鲜空气质量流量最大化的多目标优化。仿真结果表明：y滚流比和进入燃烧室的新鲜空气质量流量之间存在明显的trade-off竞争关系；与基准设计相比，最优设计的y滚流比提升了15.6%，进入缸内的空气质量流量提升了22.3%。该研究方法可以实现快速自动化的汽油机进气道优化设计，减少设计周期，提高设计效率。

关键词：进气道；STAR-CCM+；y滚流比；空气质量流量

Optimization of intake port based on STAR-CCM+

WANG Dong, LIU Xiangdong^*

School of Automotive Studies, Tongji University, Shanghai 200092, China

Abstract：In order to improve the efficiency of intake port design and shorten development time, a steady-state parameterized model of gasoline engine intake ports is established based on the STAR-CCM+ intake port optimization design method. The Sherpa optimization algorithm in STAR-CCM+ Design Manager is used for multi-objective optimization with the goal of maximizing the y-tumble ratio and the mass flow rate of fresh air entering the combustion chamber. The simulation results of the optimization scheme indicat that there is a clear trade-off competition relationship between the y-tumble ratio and the fresh air mass flow rate entering the combustion chamber. Compared with the benchmark design, the optimal design has an increase of 15.6% in y-tumble flow ratio and an increase of 22.3% in air mass flow into the cylinder. This research method could achieve automated optimization design of gasoline engine intake ports, reduce design cycles, and improve design efficiency.

Keywords:intake port; STAR-CCM+; y-tumble；air mass flow