Elliptic Volume Grid Generation for Viscous CFD Parametric Design StudiesThis paper presents a robust method for the generation of zonal volume grids of design parametrics for aerodynamic configurations. The process utilizes simple algebraic techniques with parametric splines coupled with elliptic volume grid generation to generate isolated zonal grids for changes in body configuration needed to perform parametric design studies. Speed of the algorithm is maximized through the algebraic methods and reduced number of grid points to be regenerated for each design parametric without sacrificing grid quality and continuity within the volume domain. The method is directly applicable to grid reusability, because it modifies existing ow adapted volume grids and enables the user to restart the CFD solution process with an established flow field. Use of this zonal approach reduces computer usage time to create new volume grids for design parametric studies by an order of magnitude, as compared to current methods which require the regeneration of an entire volume grid. A sample configuration of a proposed Single Stage-to-Orbit Vehicle is used to illustrate an application of this method.
Document ID
20040110896
Acquisition Source
Langley Research Center
Document Type
Other
Authors
Alter, Stephen J. (Lockheed Martin Engineering and Sciences Co. Hampton, VA, United States)
Cheatwood, F. McNeil (Vigyan Research Associates, Inc. Hampton, VA, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 1996
Publication Information
Publisher: American Inst. of Aeronautics and Astronautics