The invention relates to the technical field of material thermal performance testing, and discloses a material heat
conductivity coefficient
automatic testing method based on a
heat flow gradient method. The method comprises the following steps: firstly, constructing a test environment topology network, collecting three-dimensional structure parameters and environment thermodynamic parameters of a tested material, and inputting the parameters into a thermal
field simulation system to generate an internal
heat flow distribution model; and analyzing
internal cavity distribution characteristics according to the three-dimensional structure parameters, matching the
internal cavity distribution characteristics with a cavity characteristic-heat source
layout mapping table to determine a steady-state heat source
layout scheme, and activating a
heat flow gradient analysis device when multiple heat sources are needed. A heat conduction parameter
database is called, heat source power parameters and temperature acquisition parameters are extracted based on environmental thermodynamic parameters, the heat source power parameters comprise spacing, axial angles and the like, and the temperature acquisition parameters comprise
thermocouple types and acquisition frequencies; and finally, simulating temperature field evolution through a heat flow
gradient analysis device, outputting and analyzing related data, and generating a parameter optimization instruction to adjust heat source configuration. According to the method, multiple links are coordinated, material structures and environmental factors are integrated, and
automation of the testing process is achieved.