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A Modeling Method for Distortion of Liquid Film on Spray Cooled Surface Induced by Unfavorable High Overload

A technology of spray cooling and modeling methods, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as differences in experimental conditions, insufficient observation of experimental phenomena, inconsistent conclusions, etc.

Inactive Publication Date: 2018-05-04
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Relevant experiments can intuitively reflect the influence of gravity factors on spray cooling heat transfer, but due to the short experimental time and different experimental conditions, the experimental phenomena are not fully observed, and the conclusions are inconsistent, which is not conducive to the spray cooling heat transfer mechanism in a very gravity environment Research

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  • A Modeling Method for Distortion of Liquid Film on Spray Cooled Surface Induced by Unfavorable High Overload
  • A Modeling Method for Distortion of Liquid Film on Spray Cooled Surface Induced by Unfavorable High Overload
  • A Modeling Method for Distortion of Liquid Film on Spray Cooled Surface Induced by Unfavorable High Overload

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Embodiment Construction

[0024] The invention provides a modeling method for the liquid film distortion on the surface of spray cooling induced by unfavorable high overload, solves the problems of too short experiment time and insufficient phenomenon observation caused by the limitation of experimental conditions, and corrects the VOF model under normal gravity conditions , to establish a calculation model under overload conditions, and based on the judging method of liquid film accumulation and fragmentation, to determine the location of liquid film distortion caused by unfavorable overload, and to study the impact of overload.

[0025] According to one aspect of the present invention, a numerical calculation model under overload conditions is established; the spray state is simulated, wherein the spray model is simplified, and the working fluid flow and spray density are controlled by three droplet parameters; the liquid film The occurrence of distortion is judged to determine the position where the ...

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Abstract

The invention provides a modeling method for spray cooling surface liquid film distortion caused by harmful high overload. The modeling method is characterized by comprising the steps of simulating overload acceleration, simulating a spray state, judging the occurrence of the liquid film accumulation phenomenon caused by the harmful high overload, and judging the occurrence of the liquid film breakage phenomenon caused by the harmful high overload.

Description

technical field [0001] The invention relates to a modeling method for liquid film distortion on a spray cooling surface induced by unfavorable high overload. Background technique [0002] As an efficient heat transfer method, spray cooling has a very broad application prospect in high-power electronic systems in the aerospace field. Electronic equipment will face overload effects in different directions in the airborne environment. Taking an aircraft as an example, the load it receives during maneuvering flight is much greater than that during horizontal and straight flight, and the higher the maneuverability requirements of the aircraft, the greater the overload it will bear. The aircraft overload factor refers to the ratio of the sum of external forces other than gravity on the aircraft to the weight of the aircraft. The overload factor of a fighter jet can reach 9 to 10 during a dive. The magnitude and direction of the overload force suffered by different maneuvering fl...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 庞丽萍张瑜刘猛郭琪刘栋
Owner BEIHANG UNIV