| Automobile radiator is an important part of automobile cooling system,based on the title of "Performance optimization simulation and test method for core-end structure of automobile radiator ",the research on the innovative design of core-end structure of automobile radiator,the optimization and simulation of core-end structure performance,and the test method of automobile radiator performance will help to improve the service life and heat dissipation efficiency of automobile radiator core,establish a complete test method of automobile radiator core performance,and improve the test efficiency.It has important practical significance and theoretical value for improving the design,manufacture and test level of key parts of automobile.This paper is supported by the Key Project of the Special Fund for Innovation and Development of Jieyang City,Guangdong Province in 2018(180115112310298).In this paper,the optimization method of automobile radiator core end structure performance is studied.The research progress at home and abroad is reviewed from three aspects:the method of improving automobile radiator core performance,the simulation technology of automobile radiator performance and the testing standard of automobile radiator,and the research content is determined.The main work of this paper includes:(1)Innovative design of automobile radiator core end structure.This paper summarizes the principles and requirements of innovative design of core-end structure.Three new reliable designs of the end structure of heat dissipation tube are presented,which are single-leaf hyperboloid end structure,rounded hexagonal platform end structure and elliptic cone end structure.The shape characteristics and optimization approaches of the three new structures are expounded,The geometric analysis of the shape and size parameters of the three end structure models is carried out,and the key geometric parameters and controllable variables of the performance optimization simulation are obtained,which provides the possible optimization direction for the performance optimization based on CFD simulation technology.(2)Performance optimization simulation for core-end structure of automobile radiator.The CFD simulation technology is used to simulate the end structure of the new radiator core.Through analyzing the center flow velocity of the heat dissipation pipe,the pressure of the water chamber and the impact force at the junction,the characteristics of the flow field and the lifting effect of the reliability are analyzed,and the specific scheme of performance optimization is given to further optimize the core end structure of the radiator.(3)Test method of automobile radiator core performance.The key performance index system and its testing method of high efficiency and high performance automobile radiator are put forward,This paper summarizes the performance requirements of automobile radiator core with end structure,including water side resistance,air side resistance,heat dissipation and heat exchange efficiency,reliability and other test equipment requirements and precautions,in order to improve the serialization of automobile radiator core with end structure(4)Test and analysis.After completing the theoretical design of the new core-end structure of automobile radiator,the heat dissipation performance test of automobile radiator proves that the end structure can improve the overall performance of the radiator.The experimental results show that the optimization of the end structure effectively improves the flow field characteristics,reliability,heat exchange performance,flow performance and other key performance of the automobile radiator,and the heat exchange performance is improved more significantly under the condition of full-power heat dissipation. |
