For a complex flow about multi-element airfoils a mixed grid method is set up. C-type grids are produced on each element′s body and in their wakes at first, O-type grids are given in the outmost area, and H-type grids are used in middle additional areas. An algebra method is used to produce the initial grids in each area. And the girds are optimized by elliptical differential equation method. Then C-O-H zonal patched grids around multi-element airfoils are produced automatically and efficiently. A time accurate finite-volume integration method is used to solve the compressible laminar and turbulent Navier-Stokes (N-S) equations on the grids. Computational results prove the method to be effective.%对多段翼型的复杂粘性流场,各翼段物面及尾迹区生成C型网格,外场采用O型网格,中间用H型附加区过渡,自动生成高效的分区对接C-O-H型网格.采用时间精确有限体积高精度格式解可压缩N-S 方程.层流、紊流的N-S方程求解结果,说明了本文方法的有效性.
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机译：For a complex flow about multi-element airfoils a mixed grid method is set up. C-type grids are produced on each element′s body and in their wakes at first, O-type grids are given in the outmost area, and H-type grids are used in middle additional areas. An algebra method is used to produce the initial grids in each area. And the girds are optimized by elliptical differential equation method. Then C-O-H zonal patched grids around multi-element airfoils are produced automatically and efficiently. A time accurate finite-volume integration method is used to solve the compressible laminar and turbulent Navier-Stokes (N-S) equations on the grids. Computational results prove the method to be effective.%对多段翼型的复杂粘性流场,各翼段物面及尾迹区生成C型网格,外场采用O型网格,中间用H型附加区过渡,自动生成高效的分区对接C-O-H型网格.采用时间精确有限体积高精度格式解可压缩N-S 方程.层流、紊流的N-S方程求解结果,说明了本文方法的有效性.
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