Construction method of thermochemical equilibrium ablation database for multi-component thermal protection materials

A heat-resistant material and multi-component technology, applied in the direction of structured data retrieval, special data processing applications, etc., to achieve good versatility, easy programming calculation, and realize the effect of programming calculation

Active Publication Date: 2020-08-14
CHINA ACAD OF AEROSPACE AERODYNAMICS
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Problems solved by technology

[0004] For multi-component heat-resistant materials, the ablation process of each component under different temperature, pressure and gas partial pressure conditions has mutual influence, and the existing methods are difficult to theoretically predict its ablation behavior

Method used

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  • Construction method of thermochemical equilibrium ablation database for multi-component thermal protection materials
  • Construction method of thermochemical equilibrium ablation database for multi-component thermal protection materials
  • Construction method of thermochemical equilibrium ablation database for multi-component thermal protection materials

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Embodiment Construction

[0029] Such as figure 1 Shown database construction flowchart, the specific implementation process of the present invention is as follows:

[0030] (1) According to the multi-component heat-resistant materials and the components of the incoming gas, the chemical thermodynamic analysis method is used to determine the possible chemical reactions and reaction products on the surface of the materials.

[0031] According to the composition of the heat-resistant material and the composition of the incoming gas, the second law of thermodynamics in the chemical reaction process is used to determine the possible chemical reaction types for the temperature and gas partial pressure conditions of the heat-resistant material. Based on the chemical reactions that may occur, list all possible ablation gas products that may be generated.

[0032] For example, carbon / silicon carbide materials are typical multi-component heat-resistant materials, which contain two main chemical components: car...

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Abstract

The invention provides a thermal chemical balance ablation database construction method of a multi-component thermal protection material. The method puts forward an ablation characteristic database construction method of the multi-component thermal protection material filtered based on ablation master control components in an aerodynamic heating environment. The method has relatively good applicability on materials with a composition of any two or more components and any incoming flow gas components, has the characteristics of being convenient and fast in construction method, low in research and development cost, can provide direct data support for ablative heat response prediction and ablation performance evaluation of thermal protection structures.

Description

technical field [0001] The invention belongs to the field of aircraft thermal protection design, and in particular relates to a thermochemical equilibrium ablation database construction method for multi-component heat-resistant materials. Background technique [0002] Hypersonic vehicles have the characteristics of long-term flight and lift body shape, and are faced with complex and diverse aerodynamic heating environments. Heat-resistant materials have developed from a single component to a multi-component system. The need for accurate prediction and performance evaluation of the ablation thermal response of thermal materials. The construction of the thermochemical equilibrium ablation database of multi-component heat-resistant materials can realize the rapid prediction of material ablation characteristics under different aerodynamic heating environments, which is of great significance for the evaluation of material heat-resistant performance and aircraft heat-resistant des...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/20
CPCG06F16/20
Inventor 邓代英陈思员俞继军罗晓光艾邦成
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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