Heat and mass transfer from rotating cones
Heat and mass transfer from rotating cones
复制标题
旋转锥体的传热和传质
DOI：
10.1017/s0022112063001142
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发表时间：
1963
影响因子：
3.7
通讯作者：
D. Campbell
中科院分区：
文献类型：
--
作者：
C. Tien;D. Campbell
通过测量萘涂层锥体的升华速率，并利用传热与传质之间的类比，对等温旋转锥体的对流传热进行了实验研究。测量范围的条件下，从完全层流的条件时，外部70%的表面积被湍流覆盖。对顶角为180°、150°、120°和90°的锥形层流流动的传质测量与理论预测符合得很好。对于湍流，上述顶角的锥体的实验结果也与圆盘情况下的半经验类比计算非常一致。在60°锥上的测量中观察到不同的传热和传质与旋转雷诺数的关系，并认为这是由于流动特性的变化。文中还讨论了不同锥体模型上流动的不稳定性和转捩。
Heat transfer by convection from isothermal rotating cones is investigated experimentally by measuring the sublimation rate from naphthalene-coated cones and using the analogy between heat and mass transfer. Measurements are made for a range of conditions from entirely laminar flow to conditions when the outer 70% of the surface area is covered by turbulent flow. Mass-transfer measurements for laminar flow over cones of vertex angles 180°, 150°, 120° and 90° are in good agreement with the theoretical prediction. For turbulent flow, experimental results for cones of the above vertex angles also agree very well with the semi-empirical analogy calculations for the disk case. A different heat- and mass-transfer relationship with the rotational Reynolds number is observed in the measurements on the 60° cone, and is believed to be due to a change of flow characteristics. The instability and the transition of flows over different cone models are also discussed.