COMPARISON OF ADAPTIVE-GRID REDISTRIBUTION AND EMBEDDING WITH A COMBINATION OF THESE TWO METHODS

Several approaches have been employed for grid adaptation. The most widely used ones utilize adaptive-grid redistribution and adaptive-grid embedding. However, the combination of these two main methods (r-h) is also possible. This work compares redistribution and embedding with a combination of these two methods for steady transonic airfoil flows. The Euler equations are integrated into a steady state by an explicit, finite volume, Ni’s Lax-Wendroff scheme. Comparison with other numerical solutions is employed in order to evaluate the accuracy and efficiency of the techniques. The combination of adaptive-grid redistribution and embedding is somewhat more complex than the adaptive embedding method, but the results indicate that for two-dimensional invisid flows, when high accuracy is required, their combination is more efficient.