为解决在复杂柔性边界非定常变化的流场中高精度结构化网格的应用问题，提出一种二维贴体结构网格快速生成的动网格计算方案，基于代数法对流场边界进行贴体网格快速生成，根据边界的变化，随时间步快速生成新的高质量结构化网格.应用于类鱼体柔性推进流场的计算结果显示，所提出的方案在计算负荷、网格交叉、多时间步网格质量等方面性能良好，充分显示了结构化网格在网格生成速度、网格质量、计算精度、湍流模型适用性等方面的优势，为柔性运动的流场研究提供了新方案.
In order to apply the high-precision structured grids in the flow field with complicated moving and flexible boundaries, a new adaptive control generation dynamic grids method is developed based on two-dimensional body fitted grids. The grids generation method is proposed to generate updated high-precision body fitted structured grids in each time step according to movements of boundaries. A numerical study of fish-like propulsion is carried out by using the new method, and the high computational cost, the grids intersection and quality reduction have effectively been avoided. It makes a full use of advantages of structured grids in accuracy and rate of grids generation and applicability of turbulence models. This new grid generation method is benefitial to the research of flow problems with the moving and flexible boundaries.
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