Research On Heat Dissipation Structure Of Multi-pin Ion Wind Based On EHD

With the rapid development of science and technology,a variety of electronic products are constantly appearing in people's lives,bringing convenience to people's lives.At the same time,the serious damage of components caused by the untimely heat dissipation of electronic devices is also a frequent occurrence.The problem of heat dissipation of electronic devices has gradually become the most concerned issue.Therefore,how to control the temperature of electronic devices within a reasonable range has become an urgent problem in today's science and technology.Ion wind cooling technology is a new cooling technology for electronic components.Based on the Ion wind cooling technology,two kinds of multi pin ion wind structures include multi-pin-ring and multi-pin-mesh are studied in this paper.The main research contents are as follows: Firstly,according to the basic equation of electrostatic field and the superposition principle of electric field,the formula for calculating the field strength of multi-pin-ring and multipin-mesh structure is derived,combined with the basic equations of space charge field and flow field,the mathematical model of multi physics coupling for ionic wind is established,and the boundary conditions that need to be considered in modeling are introduced.Secondly,based on the mathematical model established,the effects of pin number n,voltage U,electrode spacing d and adjacent pin spacing s on the wind speed of multi-pin-ring and multi-pin-mesh structure were studied by COMSOL Multiphysics software,and the results were analyzed,and the variation rules of ionic wind under different factors were obtained,which provided guidance for subsequent experimental research.Finally,the wind speed of the ionic wind structure under various factors is measured by the experimental platform,and the experimental results are compared with the simulation results;the empirical formulas between wind speed and various influencing factors are obtained by using response surface method,and the experimental results show that the formula can provide guidance for the design of ionic wind structure;in order to improve the heat dissipation ability of the ionic wind structure,the feasibility and effect of the ionic wind structure used for chip heat dissipation were verified,and the radiator was optimized by orthogonal optimization test.