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基于COOL3D的发动机热管理系统仿真分析
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摘要
传统热管理系统计算流程中,冷却系统匹配分析的空气侧边界条件来自三维机舱CFD分析,费时长,对数模完整性要求高,不利于快速进行发动机机舱前期概念设计。针对这一问题,本文探索一种新的分析方法,即基于COOL3D模块,建立某车型发动机机舱准三维模型,将离散后的模型嵌入GT-COOL搭建的一维热管理系统模型中,同时求解机舱流动和发动机冷却液温度,其仿真结果与三维CFD求解机舱、GT-COOL求解一维冷却系统的计算结果接近。该方法避免了两种软件边界条件的传递,在保证一定精度的基础上大幅度减少了计算成本,可以为机舱前期概念设计提供有效的支持。
During traditional simulation process of thermal management system,air boundary condition for cooling system simulation comes from 3D underhood analysis which is not suitable for early concept underhood design because of high cost of time and model data integrity.To solve this problem,a new analysis method was studied in this article.A quasi-3D underhood model was built based on COOL3 D,this discrete model was embedded in GT-COOL 1D thermal management system model,the underhood flow and engine coolant outlet temperature were solved simultaneously which were closed to the simulation results from 3D CFD and GT-COOL 1D cooling system.This method avoids the transfer of boundary conditions between two softwares.This simulation method can greatly reduce time cost and provide effective support for underhood concept design.
引文
[1]戴鑫鑫,李红洲,陈海娥,等.整车热管理分析在产品开发中的应用[C].2010中国汽车工程学会年会论文集,2010,长春.
    [2]Seider G.Design of Automotive Cooling Systems with GTCool and Cool3D[C].11~(th)GT User Conference,2007.
    [3]韩恺,赵长禄,张付军.装甲车辆冷却风道的一维CFD仿真[J].车辆与动力技术,2010,(1):47-50.
    [4]詹佳,曾昌明,朱贞英.乘用车发动机室热管理一维仿真分析[C].2009中国汽车工程学会年会论文集,2009,北京.

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