In this study,transient non-Fourier heat transfer in a solid cylinder is analytically solved based on dual-phase-lag for constant axial heat flux condition.Governing equations for the model are expressed in two-dimens...In this study,transient non-Fourier heat transfer in a solid cylinder is analytically solved based on dual-phase-lag for constant axial heat flux condition.Governing equations for the model are expressed in two-dimensional cylindrical coordinates;the equations are nondimensionalized and exact solution for the equations is presented by using the separation of variable method.Results showed that the dual-phase-lag model requires less time to meet the steady temperature compared with single-phase-lag model.On the contrary,thermal wave diffusion speed for the dual-phase-lag model is greater than the single-phase-lag model.Also the effect of relaxation time in dual-phase-lag model has been taken on consideration.展开更多
文摘In this study,transient non-Fourier heat transfer in a solid cylinder is analytically solved based on dual-phase-lag for constant axial heat flux condition.Governing equations for the model are expressed in two-dimensional cylindrical coordinates;the equations are nondimensionalized and exact solution for the equations is presented by using the separation of variable method.Results showed that the dual-phase-lag model requires less time to meet the steady temperature compared with single-phase-lag model.On the contrary,thermal wave diffusion speed for the dual-phase-lag model is greater than the single-phase-lag model.Also the effect of relaxation time in dual-phase-lag model has been taken on consideration.
