Analysis and optimization of internal flow field of diffuser structure of cooling system based on Fluent
In order to solve the problem of insufficient gas diffusion in air-cooled heat dissipation system,this paper proposes a solution of installing diversion plates inside the expansion structure.The fluid dynamics software Fluent was used to build the simulation model of the expanded flow structure and analyze the internal flow field of the expanded flow structure.The conclusions are as follows:The local head loss of fluid in different planes of the diffuser structure is 3.24 m and 1.21 m respectively.In the simplified model,the heat dissipation efficiency of fluid with low speed and large area distribution is 8%higher than that of fluid with high speed and small area distribution.The orthogonal test is used to study the influence of the deflector parameters on the heat dissipation efficiency.The results show that for the heat dissipation efficiency of the system,the order of the degree of influence from large to small is:the shortest distance L between the deflector group and the inlet end,the radius R of the surface hole of the deflector,the inclination angle between the deflector and the flow direction θ,the projection length h of the deflector in the flow direction,and the shortest distance d of the deflector in the direction perpendicular to the flow direction.The experimental results show that the cooling efficiency of the heat dissipation system is increased by 7.67%,3.62%,4.26%and 6.93%when the fan is driven by output voltage of 3,4,5,6 V respectively to produce cold fluid.
fluid machinery and engineeringdeflectorheadlossorthogonal testFluent
万方数据
维普
