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Complex structure radiant heat exchange calculation method

A technology of radiation heat transfer and calculation method, which is applied in the field of radiation heat transfer calculation of complex structures, can solve problems such as self-region radiation, and achieve the effect of reducing the amount of calculation

Active Publication Date: 2017-11-24
CENT SOUTH UNIV
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Problems solved by technology

[0003] The present invention aims to provide a complex structure radiation heat transfer calculation method, which solves the problem of self-regional radiation that may exist in the gas region, and separates the probability simulation statistics and the iterative solution of the temperature field, so that the probability simulation of the energy beam does not need to be re-executed when the temperature field changes

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Embodiment Construction

[0035] The concrete realization process of the present invention is as follows:

[0036] a. Considering the gray non-radiative gas environment, draw the regional grid of the radiation heat transfer area and the heating surface of the heated body.

[0037] Determine the furnace wall boundary apex of the heating furnace in the spatial coordinates as the total radiation exchange area. Then determine the spatial geometric vertex coordinates of the billet heating body as the direct radiation exchange area. It is also beneficial to the spatial geometric coordinate method to draw regional grids for the billet heating body, and decompose the billet heating area into local areas with multiple grid numbers. Considering the non-gray gas radiation environment, the total exchange area, the direct exchange area and the heating surface of the heated body are drawn as regional grids. The idea of ​​​​area network division using the area method, in which the shell boundary of the heating furn...

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Abstract

The invention discloses a complex structure radiant heat exchange calculation method, and provides an improved Monte Carlo zone ray tracing method combining a Monte Carlo method, a zone method and a ray tracing method. The improved Monte Carlo zone ray tracing method solves the problem of possible self-zone radiation of a gas zone and is suitable for complex structure radiant heat exchange angle coefficient calculation. Besides, probability simulation statistics and temperature field iterative solution are separated, so that probability simulation of energy beams is omitted and only energy-balance equations need to be solved again when temperature fields change, and calculation amount is decreased.

Description

technical field [0001] The invention relates to the field of radiation heat transfer calculations, in particular to a complex structure radiation heat transfer calculation method. Background technique [0002] At present, the traditional Monte Carlo method at home and abroad adopts the idea of ​​sampling energy beams to carry energy, and does not effectively separate the energy beam tracking simulation process from the solution of the energy balance equation, so that the internal temperature of the temperature field needs to be recalculated when the temperature changes. Moreover, the problem of self-regional radiation is not considered, so that the data results are exaggerated when calculating the direct exchange area of ​​the gas region, and the calculation of radiation heat transfer under complex structures cannot be solved. At the same time, in the radiation exchange process of calculating the temperature field, the medium is regarded as a radiant ash body, and the non-as...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 王春生王向莉胡玉坤高博
Owner CENT SOUTH UNIV
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