UNSTRUCTURED MESH QUALITY ASSESSMENT AND UPWIND EULER SOLUTION ALGORITHM VALIDATION

Quality assessment procedures are described for two- and three-dimensi onal unstructured meshes. The procedures include measurement of minimu m angles, element aspect ratios, stretching, and element skewness. Mes hes about the ONERA M6 wing and the Boeing 747 transport configuration are generated using an advancing from method grid generation package of programs. Solutions of the Euler equations for these meshes are obt ained at low angle-of-attack, transonic conditions. Results for these cases, obtained as part of a validation study, investigate accuracy of an implicit upwind Euler solution algorithm.