Simulation of flow and heat transfer characteristic in the combined thermal and acoustic environment

机译：热与声复合环境下流动与传热特性的仿真

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摘要

A flow and heat transfer model in the combined thermal and acoustic environment was established. The temperature distributions of the test pieces in different heat flux densities with two installation locations of the graphite heater (inside the duct and on the duct) were calculated and analyzed by the CFD method combined with DO radiation model. The results show that the established model can well simulate the flow field and heat transfer in the combined thermal and acoustic environment simulation test-bed. It is shown that the temperature of test piece increases with the increase of the heat flux, but to reach the same temperature, the placement that the heater and the test piece are placed on top surface of the duct requires less heating power, meanwhile the temperature of the test piece has better uniformity. When the heater is placed inside the wind duct, the temperature of the test piece requires heating heat flux 300 kW/m2 to reach 1000 °C. While when the heater is placed on the duct, the test piece temperature reaches 1000 °C with only 50 kW/m2 heat flux density needed. The numerical simulation method and results of flow filed and heat transfer under the combined thermal and acoustic environment in this paper may provide a guidance for building test-beds and setting the parameters of the tests and experiments.

机译：建立了热声耦合环境下的流动和传热模型。通过CFD方法结合DO辐射模型，计算并分析了石墨加热器两个安装位置（管道内部和管道上）在不同热通量密度下的试件温度分布。结果表明，所建立的模型能够很好地模拟热声环境模拟试验台中的流场和传热。结果表明，试件的温度随热通量的增加而升高，但要达到相同的温度，将加热器和试件放在管道顶面上的位置所需的加热功率较小，而温度试样的均匀性更好。将加热器放在风道内时，试件的温度需要加热热通量300 kW / m2才能达到1000°C。当将加热器放在管道上时，试件温度达到1000°C，仅需要50 kW / m2的热通量密度。本文的数值模拟方法以及在热声耦合环境下的流动和传热结果，可以为建立试验台和设置试验和实验参数提供指导。

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来源
《2016 IEEE/CSAA International Conference on Aircraft Utility Systems》|2016年|1040-1045|共6页
会议地点 Beijing(CN)
作者
Xiaoning Liu; Xiaobin Shen; Guiping Lin; Xueqin Bu; Yirong Wang;
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作者单位

Vacuum Thermal Environment Laboratory, Beijing Institute of Spacecraft Environment Engineering, Beijing, 100094 China;

School of Aeronautic Science and Engineering, Beihang University, Beijing, 100083 China;

School of Aeronautic Science and Engineering, Beihang University, Beijing, 100083 China;

School of Aeronautic Science and Engineering, Beihang University, Beijing, 100083 China;

Vacuum Thermal Environment Laboratory, Beijing Institute of Spacecraft Environment Engineering, Beijing, 100094 China;

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会议组织
原文格式 PDF
正文语种 eng
中图分类
关键词
Decision support systems; Heating; Ducts; Conferences; Aircraft;

机译：决策支持系统;加热;风管;会议;飞机;

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Simulation of flow and heat transfer characteristic in the combined thermal and acoustic environment

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