Finite volume simulation of unsteady shock-cavitation in compressible water
Finite volume simulation of unsteady shock-cavitation in compressible water
复制标题
可压缩水中非稳态冲击空化的有限体积模拟
DOI：
10.1002/fld.3754
复制
发表时间：
2012
影响因子：
1.8
通讯作者：
Causon D
中科院分区：
文献类型：
--
作者：
Causon D
本文扩展了已建立的基于Riemann的可压缩纯水有限体积氢码，使其允许相的变化。水和水蒸气的热行为和热行为由单流体模型描述，该模型假设两相状态可以在有限体积电池内局部描述为保持热力学平衡的均匀混合物。通过推导涵盖所有可能流体状态的纯流体和混合物的状态方程来实现方程组的闭包。在描述了流动模型和数值方法之后，进行了计算以证明该方法的潜力。计算包括一维空化管、一维凝结锋、一维水中空化泡的坍缩，以及非定常二维超高速流过空化水翼。版权所有©2012 John Wiley & Sons， Ltd。
The present paper extends an established Riemann‐based finite volume hydrocode for compressible pure water to admit change of phase. The thermal and caloric behaviour of water and water vapour is described by a one‐fluid model on the assumption that the two‐phase regime can be described locally within a finite volume cell as a homogeneous mixture that remains in thermodynamic equilibrium. Closure of the equation set is achieved by deriving equations of state for pure fluids and the mixture that cover all possible fluid states. Following a description of the flow model and the numerical method, computations are carried out to demonstrate the potential of the method. Calculations include a one‐dimensional cavitation tube, one‐dimensional condensation front, collapse of a cavitation bubble in water in one dimension, and an unsteady two‐dimensional hypervelocity flow past a cavitating hydrofoil. Copyright © 2012 John Wiley & Sons, Ltd.