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Unsteady heat transfer from an oblate/prolate spheroid

机译:扁/扁球体的热传递不稳定

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摘要

Numerical methods are used to investigate the transient heat transfer from an oblate/prolate spheroid to a steady stream of viscous, incompressible fluid. The temperature of the spheroid is considered spatially uniform but not constant in time. The momentum and heat balance equations were solved numerically in oblate/prolate spheroidal coordinates system. The solutions span the parameter ranges 10 ≤ Re ≤ 100 (for the oblate spheroid), 10 ≤ Re ≤ 200 (for the prolate spheroid), Pr=1, 10 and axis ratio ε, 0.1 ≤ ε ≤ 0.9. The computations were focused on the influence of the axis ratio and volume heat capacity ratio on the heat transfer rate.
机译:数值方法用于研究从扁球形/扁球形到稳定的粘性不可压缩流体流的瞬态热传递。球体的温度被认为在空间上是均匀的,但在时间上不是恒定的。动量和热平衡方程在扁/扁球坐标系中得到了数值求解。该解决方案的参数范围为10≤Re≤100(对于扁球体),10≤Re≤200(对于扁球体),Pr = 1、10和轴比ε,0.1≤ε≤0.9。计算集中在轴比和体积热容比对传热速率的影响上。

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