在复杂边值条件下非稳态肋片的传热研究

A Study of Unsteady-State Finned Heat Transfer under Complex Boundary Value Condition

研究了变热特性参数，根部温度作周期性变化的肋片传热情况．应用摄动法求解控制微分方程，并且采用打靶法和叠加原理进行数值计算．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 trapezoidal fin with variable thermal parameters and periodic change of fin base temperature. The control differential equation is solved by applying perturbation method, and the numerical calculation is performed by adopting shooting method and the method of supreposition. In addition to theoretical significance, the results are of practical significance for engineering design.