Dynamic Unstructured Grids Methed with Applications to Unsteady Flows Involving Wings Sweeping Back
Wang Jun-li · Science Technology and Engineering · 2008
Spring analogy method for dynamic unstructured grids has been studied.The stiffness of the springs in the modified vertex spring analogy has been analyzed.Improvements that considering squashing stiffness and boundary effect has been adopted to the standard method.Applications of the improved spring analogy method to 3-D grids generation show that the new method greatly improves the deforming ability and the quality of the grids.Coupled with 3-D ALE Euler solver this dynamic unstructured grid method has been applied to simulate unsteady transonic flow about 3-D wings sweeping back.Computational results are in good agreement with those of experiment.