CAJ | 학술논문

对于端部受温度载荷的一维半无限长多孔介质柱体,给出了热局部非平衡下固相和流相温度场在Laplace变换域中的解析表达式.对于冲击温度载荷的情况,获得了温度场在短时间内的Laplace逆变换渐近解析解.数值分析了流、固两相热扩散系数之比以及热交换系数对固相和流相温度场的影响,比较了热局部非平衡下加权温度与热局部平衡下温度之间的差别.
대우단부수온도재하적일유반무한장다공개질주체,급출료열국부비평형하고상화류상온도장재Laplace변환역중적해석표체식.대우충격온도재하적정황,획득료온도장재단시간내적Laplace역변환점근해석해.수치분석료류、고량상열확산계수지비이급열교환계수대고상화류상온도장적영향,비교료열국부비평형하가권온도여열국부평형하온도지간적차별.
For one dimensional semi-infinite saturated porous column subjected to thermal loading on the end, the general analytical expressions of solid and fluid temperatures on local thermal non-equilibrium were obtained in Laplace transform region. For the case of impulsive thermal loading, the asymptotic solutions of temperature field were obtained during short time. The influences of thermal conductivity and heat transfer coefficient on solid and fluid temperature fields were numerically analyzed, and the difference between weighted average temperature on local thermal non-equilibrium and the temperature on local thermal equilibrium was also discussed.