关键词: 除霜性能；CFD；空调风道；环境仓试验；ANSA & Fluent

Abstract: Defrosting performance is an important index in vehicle development and vehicle performance test. In the design and development stage, the defrosting analysis is mainly carried out by ANSA & Fluent software simulation analysis, and in the vehicle stage, the test is mainly carried out by environmental chamber. Aiming at the problem of unqualified defrosting of environmental chamber test vehicle, this paper applied ANSA & Fluent software to carry out computational fluid dynamics (CFD) simulation analysis. According to the analysis results, CATIA software was used to optimize and modify the air duct of the air conditioner, and CFD simulation analysis was carried out again for the modified data. After the analysis is qualified, the analysis results are verified by the vehicle environmental chamber test, thus forming a complete closed-loop process of analysisverification. In the process of air duct development, CFD simulation analysis by ANSA & Fluent software can effectively avoid defrosting problems in the later vehicle test stage, and avoid the waste of manpower, time and cost of problem rectification.

Key words: Defrosting performance; CFD; Air conditioning duct; Environmental chamber test; ANSA & Fluent