A Novel Cartesian Grid Method for Complex Aerodynamic CFD Applications

5th International Conference On Numerical Grid Generation in Computational Field Simulations, Mississppi State University, pp.709-718, April 1996

MESHING
RESEARCH
CORNER

Department of Mechanical Engineering
UMIST
PO Box 88, Manchester M60 1QD, United Kingdom

Abstract
A novel automatic grid-generation method for Euler and RANS computations of flows over complex geometries has been developed. This is driven by the need of the industrial CFD practitioner to reduce the turnaround dm from an initial CAD geometry to obtaining a flow solution. The method uses a subdivision strategy, allowing hanging nodes in a Cartesian unstructured-mesh environment, and is combined with a non-overlapping, semi-structured surface grid. Unusually. the surface grid is the end rather than the starting point of the present approach. The capabilities of the method are demonstrated by reference to an inviscid and a viscous-flow solution for a realistic complex configuration at a transonic flow condition. using the Fluent Inc. code Rampant v4.0.