肋片温度周期性变化的传热研究

Heat Transfer of a Fin with Periodical Change of Finbase Temperature

研究肋片根部温度作周期性变化时的传热规律．利用分离变量技术，对所建立的控制微分方程进行分解组合，并用数值计算方法进行求解，其中稳态部分应用不变插值原理，波动部分应用叠加原理．所得结果不但具有理论价值。而且对工程设计也有现实指导意义．

A study is made on the heat transfer of a fin with periodic change of finbase tempreature. Separation of variables is used for decomposing and combining the established goverving differential equations; while numerical calculation is used for solving them. The principle of invariant imbedding is applied to its steady state component;while the principle ofsuperposition is applied to its oscillatory component. In addition to theoretical significance,the results are of practical signficance to engineering design.