COMPARISON OF SOME INVERSE HEAT-CONDUCTION METHODS USING EXPERIMENTAL-DATA

This paper compares several methods of finding the surface heat flux u sing transient temperature measurements inside a heat-conducting body. Experimental data is used with a known heat flux history. The methods include function specification with several future approximations, Ti khonov regularization, iterative regularization and specified function s over large time regions with Green's functions. The first three meth ods are used with the residual principle and the results are quite sim ilar. If the heat flux has a simple time variation over large time reg ions, taking advantage of that feature can improve the results, as sho wn by the Green's Function analysis. Copyright (C) 1996 Elsevier Scien ce Ltd.