Hybrid grid was widely used for the simulation of viscous flows with complex configurations.Hybrid grid deformation method becomes a major difficulty if hybrid grid can be applied for aeroelastic analysis.In this paper,a new mesh deformation method was developed,namely,an unstructured tetrahedral background grid was firstly generated,whose deformation was completed with the traditional spring network method including the torsion springs.Then a fast algebraic interpolation method between the background and the flow field grids was constructed to get the hybrid grid deformation.Because the background grid was only used for grid deformation,the number of the background grid could be decreased largely and its consuming time can be reduced largely.The deformation capability and efficiency of hybrid grid would also be improved.For the inconsistent of the object plane grids about the hybrid grid and background grid,the more than one background grid were generated,they have the same object plane grid and could cover the fluid domain and the solid domain.The method is firstly validated by the comparison with other methods.Then the method is applied for the three typical large deformation cases.Finally,the aeroelastic calculations for the standard wing AGARD 445.6 and a wing with external store were given to show the availability of the developed hybrid grid deformation method.
; 杨国伟
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