关键词: 热学 , 高能燃烧剂 , 热冲击 , 温度场 , 解析解

Abstract: Based on the heat conduction theory of thick wall cylinder, the distribution of temperature field in rocks acted by high energy burners was calculated. The analytic solution of the instantaneous temperature field was deduced by Laplace transform and the introduced unit pulse function into the boundary condition to simulate the instantaneous shock characterisitc of high energy burners, the tem?perature field calculation was completed by the solution. The calculation results show that after the heat shock of high energy burners, the temperature field in rocks is distributed in the thin layer with a distance of several to tens of millimeters from the inner surface of a hole, the distribution of tempera?ture field tends to uniform with time, and the temperature field is affected by the radius of hole, 1.e. at constant outer radius, the smaller the hole radius is, the lower the temperature at the same point is, and the steeper the temperature gradient gets at the same time. The results provide a certain theoretic guidance for the design and application of high energy burners.

Key words: thermology , high energy burner , heat shock , temperature field , analytic solution