A theoretical model of a turbulent fountain
A theoretical model of a turbulent fountain
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DOI：
10.1017/s0022112000001907
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发表时间：
2000-11
影响因子：
3.7
通讯作者：
Lynn J. Bloomfield;R. C. Kerr
中科院分区：
文献类型：
--
作者：
Lynn J. Bloomfield;R. C. Kerr
本文建立了均质流体和分层流体中轴对称湍流喷泉的理论模型。该模型量化的夹带到初始喷泉上流的环境流体，和夹带的流体从上流和环境到随后形成的下流。四个不同的变化模型被认为是，包括两个最合理的制剂的体力作用在“双”结构和两个制剂的流量之间的夹带率。四个模型的变化进行了测试，通过比较他们每个人的预测与实验测量的喷泉在均匀和分层的流体。
A theoretical model of axisymmetric turbulent fountains in both homogeneous and stratified fluids is developed. The model quantifies the entrainment of ambient fluid into the initial fountain upflow, and the entrainment of fluid from both the upflow and environment into the subsequently formed downflow. Four different variations of the model are considered, comprising the two most reasonable formulations of the body forces acting on the ‘double’ structure and two formulations of the rate of entrainment between the flows. The four model variations are tested by comparing the predictions from each of them with experimental measurements of fountains in homogeneous and stratified fluids.