Heat-network modeling method for determining maximum value of steady-state temperature of heat conduction in radial direction

Abstract

The invention provides a heat-network modeling method for determining the maximum value of steady-state temperature of heat conduction in a radial direction, which is applied to the heat conduction of a circular wall cylinder structure. The method provided by the invention comprises the following steps: firstly, using a network with the maximum value of the steady-state temperature of the heat condition in the radial direction to establish a heat-network model of a research object, determining the temperatures of all nodes in the established heat-network model through a heat balance equation,then according to the temperatures of the inner surface and the outer surface of each circular wall cylinder, determining the distribution of the maximum value point rmax of the steady-state temperature of the heat conduction of each circular wall cylinder in the radial direction, and finally, according to the distribution of the maximum value point rmax of the temperature, designing an error compensation link, finally, obtaining the maximum value of the steady-state temperature of the heat conduction of each circular wall cylinder in the radial direction.. According to the method of the invention, the maximum value of the steady-state temperature of the heat conduction in the radial direction of the circular wall cylinder can be determined by the heat-network method, the determined maximum value of the temperature is accurate, the calculation speed is high, the modeling is intuitive, and the obtained value can be further used for analyzing the heat conduction problem of electronic devices.

Description

technical field [0001] The invention relates to the field of electronic heat conduction, in particular to a thermal network modeling method for determining the maximum value of the steady-state temperature of radial heat conduction. Background technique [0002] In satellite, aerospace, machinery and other electronics industries, the problem of heat dissipation has always been a problem to be solved by scientific researchers. To solve complex heat dissipation problems, it is necessary to analyze the heat conduction problems in various situations. The thermal network method is a method for solving heat conduction problems by means of thermoelectric analogy (Reference 1: Kang Qin, Li Shiwu, Guo Jianli, "Introduction to Thermal Network Method", "Industrial Heating" Volume 35, Issue 5, 2006), the Method Firstly, the thermal network model of the research object is established, and then the heat balance equation of the research object's thermal network is obtained. By solving the ...

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Problems solved by technology

[0006] Aiming at the problem that the current heat network method cannot solve the maximum value of the steady-state temperature of the radial heat conduction of the round-walled cylinder, the present invention provides a thermal network construction method for determining the maximum value of the steady-state temperature of the radial heat conduction of the round-walled cylinder model method

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