拉伸弹簧与扭转弹簧模拟动态网格方法分析与改进

分析了基于拉伸弹簧模拟的动态网格方法及其组合形式在非结构化网格和结构化网格中应用的优缺点，并引入网格尺度修正系数，以加强弹簧模拟方法对大扭转变形的适应能力，通过NACA0012翼型流场非结构化网格和正弦振动平板流场结构化网格两个算例验证了分析结果，表明了修正系数的有效性，并且发现使用修正后的扭转弹簧和拉伸弹簧模拟的组合更能保证网格质量，同时在大变形下需要使用网格光顺方法以提高网格质量。

Analysis and enhancement on lineal spring and torsional spring based dynamic mesh method

Analysis are performed on lineal spring and torsional spring simulation for dynamic mesh method, and the advantages and disadvantages of both methods and their combination are discussed. And a mesh scale factor is introduced to the simulation equations to enhance the large torsional deforming capability. Then two cases including an unstructured fluid mesh around NACA0012 airfoil and a structured fluid mesh above sinusoidal vibrating panel are given to prove out the discussion and show the effectiveness of the mesh scale factor. Also the result show that the mesh quality after deforming can be maintained best with combination of modified torsional spring and lineal spring simulation, and smoothing method should be used in case of large deformation to enhance the mesh quality.