Dissertation
Dissertation > Aviation, aerospace > Aviation > Aircraft instrumentation,avionics, flight control and navigation > Electronic equipment

Application Research of Fixed-Point Jet Technology on Electronic Equipments Cooling

Author LiuZhiBo
Tutor XiaWenQing
School Nanjing University of Aeronautics and Astronautics
Course Machine and Environmental Engineering
Keywords Designated jet Numerical Simulation Uniform air Electronic equipment cooling Variable flow coefficient
CLC V243
Type Master's thesis
Year 2009
Downloads 13
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With the continuous development of electronic technology , electronic equipment cooling problem , especially in the high-power field has become more and more prominent . Cooling system heat to a certain type of phased array radar antenna is designed to study the heating and structural characteristics of the antenna , and preliminary experimental results on the antenna sample [ 1] , to determine the design is still designated jet technology , but not detect antenna sample piping system of linear amplification , but in conjunction with the antenna system and cooling system in conjunction with the redesign . Important are the following aspects : the heat generating components heat load calculation wavefront and determine the cooling piping systems in the form ; rederived pipeline design formula , the main consideration orifice variable flow coefficient μ and the outlet pressure ; consider orifice constant flow coefficient μ and variable flow coefficient μ conditions , the use of computational fluid dynamics simulation software fluent main channel ( circular cross section ) and jet pipes ( flat section) simulation analysis , simulation results and theoretical calculations contrast ; preparation of uniform air supply piping software . The results show that : consider the orifice variable flow coefficient μ and outlet pressure of the theoretical formula used to calculate the different the section ventilation ducts and theoretical results is consistent . FLUENT software with 3D solid modeling , computational fluid dynamics , heat transfer calculations , calculations graphical functions , the introduction of these new concepts , new features to the thermal design of the cooling system of the radar antenna , can effectively improve the design, development cost savings , shorten the development cycle , improve the self-development capacity .

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