基于气液两相当地均相介质模型,本文给出了一种模拟非定常粘性空化流动的计算模型.认为空化绕流流场中流动介质是一种当地均匀的气液混相物.控制方程采用了应用两相流模型的N-S方程.基于液相和气相的状态方程推导了混合介质密度的表达式.为了保证数值计算的稳定性,控制方程的数值求解采用了TVD-MacCormack格式.为了评价计算模型的可靠性,分别计算了绕台阶和管道水锤的空化流动,所得结果是合理的,说明该方法可以用于空化流动的数值计算.
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