Research on Data Exchange at Fluid-Structure Interface by Interpolation

Projection-shape function,a new idear of interpolation method,was put forward,and three-dimensional linear interpolation method was also developed.Six kinds of interpolation methods,including the above two,optimal interpolation,constant volume transformation method and so on,was to be applied to the study of interpolation accuracy.In a new point of view about the characterizations of different grids′ quality situations and interpolation functions,the effect of mesh quality and interpolation functions to the interpolation accuracy was explored.The results showed that interpolation method of projection-shape function performed very well.The quality of grids,composed of structure,fluid and matching condition of the two,deeply impacted the interpolation accuracy,and the effects were much larger than the method itself in many situations.