Kinetic meshless methods for unsteady moving boundaries

Least squares Kinetic Upwind method for Moving Nodes (LSKUMMN) is a kinetic theory based gridfree method capable of handling the unsteady flow past multiple moving boundaries. In the present work this capability of LSKUM-MN has been demonstrated by computing flow past multiple oscillating blades encountered in turbomachinary flows. Flutter prediction in such a flow scenario has also been carried out on standard cascade configurations and compared with available results. Energy method has been used to predict flutter. The method has been further applied to 2D store separation problem. We have considered the NACA0012 airfoil section for both wing and the store. Chimera cloud approach has been used to generate the point distribution around each airfoil. As the store moves dynamic blanking and de-blanking of points entering into and out of the solid bodies has been carried out in efficient way by using bounding boxes. Effect of relative time scales of flow and store movement have been studied as well. © 2011 Springer-Verlag Berlin Heidelberg.