A numerical method for determining thermal conductivity distribution of the interlayer of a sandwich plate based on thermographic temperature measurement

摘要

The thermal conductivity distribution of the interlayer of a sandwich plate in a multidimensional heat conduction problem is obtained from the solution of the inverse heat conduction problem (IHCP) based on the thermographic temperature measurement. The modified one-dimensional correction method along with the finite volume method is employed for both two-dimensional and three-dimensional inverse problems. A series of numerical experiments are conducted in order to verify the effectiveness of the method. In addition, the effect of the temperature measurement error, the stopping criterion of the iteration, etc on the result of the problem is investigated. It is proved by numerical experiments that the method is a simple, stable and accurate one for this IHCP.