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根据空气强迫对流冷却系统一体化设计理念,对9238CPU风扇进行空气动力设计,由Fortran程序输出三维空间曲线文件,导入Pro/E实现实体造型.通过标准风洞对CNC铣床雕刻出的样品进行风扇性能测试.根据风扇数值模拟结果(风扇出口流场特性)设计系列放射状散热器.采用分块六面体网格技术,应用多参考旋转坐标系模型和RNGk-ε模型对风扇和曲线型散热器进行整体数值模拟,模拟结果表明曲线型散热器相对传统垂直型散热器热阻值降低15.9%,最后通过实验证明数值模拟的可信性.一体化设计思想指导下的系列散热器能达到高性能散热效果.
According to the integrated design concept of air forced convection cooling system, the 9238CPU fan is designed aerodynamically, the 3D space curve file is output by Fortran program, and the solid shape is imported into Pro / E. The performance of fan milling Test.A series of radial radiators were designed according to the fan numerical simulation results (fan outlet flow field characteristics) .Using the block hexahedral mesh technology, the multi-reference rotating coordinate system model and the RNGk-ε model were used to calculate the overall value of the fan and curve radiator Simulation and simulation results show that the thermal resistance of the curved radiator is 15.9% lower than that of the conventional vertical radiator, and the reliability of the numerical simulation is verified through experiments. The series of radiators under the integrated design concept can achieve the high-performance thermal dissipation effect.