Application of Trial Iteration Algorithm in Steady-state Heat Conduction of Multilayer Composites
Heat transfer is one of the main professional basic courses of energy and power engineering specialty.It plays an extremely important role in the talent training program and curriculum system of energy and power engineering specialty.In the teaching process,practical engineering problems are often used to explain the knowledge points of heat transfer,so that students can understand the knowledge points more deeply.In the process of solving practical engineering problems,trial algorithm is often used.Taking the steady-state heat conduction through multi-layer flat wall and cylindrical wall as example,trial algorithm must be used in the following two situations:(1)when the thermal conductivity of materials cannot be determined due to the unknown temperature between layers in the calculation of steady-state heat conduction through multi-layer flat wall.(2)When the unknown quantity appears in two different logarithms in solving the steady-state heat conduction process through the multi-layer cylinder wall.In addition,based on the case study,this paper also analyzes the convergence of the iterative process and the acceleration of convergence.
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