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首页> 外文期刊>International Journal of Heat Exchangers >Detailed CFD Modelling of EMC Screen for Radio Base Stations: A Conjugate Heat Transfer Problem
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Detailed CFD Modelling of EMC Screen for Radio Base Stations: A Conjugate Heat Transfer Problem

机译：无线基站EMC屏幕的详细CFD建模：共轭传热问题

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摘要

The objective of this paper is to perform an experimental as well as CFD investigations of the conjugate heat transfer problem in a sub-rack slot model. A steady-state three-dimensional detailed model, which serves as the most accurate representation of the model, was used in order to evaluate the details of the airflow paths and temperature field. A general model that covers a considerable range of velocities, screen porosities and heat fluxes was validated experimentally by wind tunnel measurements. The result shows that the RNG k-ε model used with correct y~+ and mesh strategy accurately predicts the temperature field. The average temperature deviation at several locations is less than 4% compared to experimental data. The influence of the velocity, screen porosity, heat flux and presence of the EMC screen on the PCB temperature field is commented.
机译：本文的目的是对子机架插槽模型中的共轭传热问题进行实验和CFD研究。为了评估气流路径和温度场的细节，使用了稳态的三维详细模型（该模型最精确地表示该模型）。通过风洞测量实验验证了涵盖速度，筛孔和热通量的较大范围的通用模型。结果表明，采用正确的y〜+和网格策略的RNGk-ε模型可以准确地预测温度场。与实验数据相比，几个位置的平均温度偏差小于4％。讨论了速度，筛孔，热通量和EMC筛的存在对PCB温度场的影响。

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