Thermal performance analysis method of composite material with curve interface

Abstract

The invention discloses a thermal performance analysis method of a composite material with a curve interface. The invention provides a rapid and accurate numerical analysis method for thermal performance of a multi-layer composite material with a curve interface type for a two-dimensional problem. According to the method, through reasonable approximation of a physical process, an interface connection condition for describing physical quantity jump on an interface is provided; mathematical description is carried out on the heat transfer process of the multi-layer composite material by combininga two-dimensional steady heat conduction equation; meanwhile, the control equation and the interface condition are discretized by utilizing an immersion interface method, and a stable and convergentnumerical format with second-order precision is obtained; according to the method, a mathematical model and a numerical simulation method are established for the problem that a two-dimensional composite material has a curve interface type, and the method can be used for carrying out high-precision rapid analysis on the heat conduction process and the thermal resistance performance of multi-layer composite materials such as sandwich steel and sleeve modules.

Description

technical field [0001] The invention relates to the application field of multi-media composite materials, in particular to a method for analyzing thermal properties of composite materials with curved interfaces. Background technique [0002] With the development of science and technology and industrial production, people put forward higher requirements for thermal conductive materials. Compared with traditional heat-conducting materials (metals, metal oxides, ceramics, etc.), polymer heat-conducting composite materials have attracted the attention of the scientific community due to their advantages such as low price, low relative density, easy processing, and short molding cycle. Thermally conductive polymer composite materials have been successfully applied in many fields and the demand continues to expand, such as lighting, aerospace, automotive, electronics, batteries, etc. The thermal conductivity of composite materials with thermal interface has been widely concerned b...

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Problems solved by technology

[0003] At present, most of the research on the thermal properties of composite materials adopts experimental research methods. The experimental methods are limited by the complexity of experimental equipment, composite materials, and arbitrary constraints of the interface. It is difficult to have a comprehensive understanding of the thermal properties of the tested materials. systematic analysis

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