Gas explosion simulation method based on self-adaptive simplified reaction and mesh subdivision

A gas explosion and simulation method technology, applied in the field of explosion safety, can solve problems such as low computational efficiency, and achieve the effects of accurate, accurate acquisition and flexible programming of reaction models

Active Publication Date: 2017-03-15
京工博创(北京)科技有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to provide a gas explosion simulation method based on self-adaptive simplified response and grid subdivision to solve the problem of low computational efficiency encountered in large-scale simulation of gas explosion safety in the calculation of real explosion accident sites

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  • Gas explosion simulation method based on self-adaptive simplified reaction and mesh subdivision
  • Gas explosion simulation method based on self-adaptive simplified reaction and mesh subdivision

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Embodiment Construction

[0019] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] like Figure 1-2 As shown, the present invention provides a gas explosion simulation method based on adaptive simplified reaction and grid subdivision, characterized in that, the gas explosion simulation method includes: determining the explosive gas composition; performing chemical reaction kinetic analysis on the explosive gas , to obtain the detailed reaction mechanism; use the self-adaptive simplified reaction model to simplify the obtained detailed reaction mechanism, and determine the phase parameter threshold set in the explosion field produced by the explosive gas explosion; wherein, the phase parameters include temperature, pressure and gas component concentration; The area with large pressure and density gradients in the explosion field is subdivided adaptively to capture the shock wave in the explosion field, as well ...

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Abstract

The invention discloses a gas explosion simulation method based on a self-adaptive simplified reaction and mesh subdivision. The gas explosion simulation method is characterized by comprising the steps that explosive gas component attributes are determined; chemical reaction kinetics analysis is conducted on explosive gas, and an explosive gas detailed reaction mechanism; a phase parameter threshold set in an explosion field generated through explosion is determined by adopting the detailed reaction mechanism obtained through a self-adaptive simplified reaction method; self-adaptive mesh subdivision is conducted on areas high in pressure and density gradient in the explosion field, and shock waves in the explosion field and time-space evolution of shock wave temperature, pressure and component concentration are captured. According to the method, the problem that gas explosion safety large-scale simulation is low in computing efficiency in real explosion accident site calculation can be solved.

Description

technical field [0001] The invention relates to the technical field of explosion safety, in particular to a gas explosion simulation method based on self-adaptive simplified response and grid subdivision. Background technique [0002] The research and development of gas explosion simulation methods in China is still in its infancy, and the research level is relatively low. There is no standardized commercial software, and there is no general method that can be applied to a wide range of large-scale gas explosions. A simulation with independent intellectual property rights has been developed. method is important. Contents of the invention [0003] The object of the present invention is to provide a gas explosion simulation method based on self-adaptive simplified response and grid subdivision to solve the problem of low calculation efficiency encountered in large-scale simulation of gas explosion safety in real explosion accident scene calculation. By adaptively simplifyin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 韩文虎李顺波
Owner 京工博创(北京)科技有限公司
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