Surface Modelling Using Coons Multipatch and Non-Uniform Rational Surface
The purpose of this paper is to define the mathematical models to be used by any out of CAD system multiblock mesh generator in order to define any surface which supports a face of blocks. Two levels of accuracy are expected to take into account, the fluid interface between two blocks, given here by a Coons multipatch model, and in the other hand the faces of blocks which lie onto the body wall provided by a non-uniform rational surface model. The inverse problem getting parameters of any given point onto the surface is solved by a projection algorithm. Some tools are delivered to check the accuracy of the surface models by comparison with the analytical definition of the surface if available.
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