Grid Deformation Techniques For Two-Dimensional Hybrid Grids

Numerical flow simulations for configurations with moving and deforming boundaries usually require consecutive modifications of the grid in order to guarantee that it remains boundary conforming. Three promising grid deformation techniques are investigated: a relatively new conformal mapping approach, a solid-body elasticity model and a spring analogy model. They all have in common that they run fully automatic and are able to operate on any grid type which can be decomposed in triangles. Their performance is assessed for hybrid grids around two different configurations which display large boundary motion