A Zonal Approach to the Design of Finite Element Grids for 3-D Transonic Flows with Complex Geometries.
Annual rept. 1 Jun 83-30 Jun 85,
INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS SCHOOL OF ENGINEERING AND TECHNOLOGY
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A block-structured solution scheme is developed for the analysis of three-dimensional transonic flows. The scheme is based on the solution of potential flow equations for individual blocks representing part of the flow field. Based on a previously developed block-structured grid generation scheme, appropriate computational grids are generated for each of the blocks depending on the complexity of the local flow field. The equations are then solved to provide a solution of a large problem in terms of an assembly of smaller problems for each block. Numerical results illustrate the applicability of the method for a three-dimensional flow field around a wing profile NACA0012. Different block structures are analyzed to demonstrate the robustness and the accuracy of the developed method. Finally a three-dimensional wing-body configuration is analyzed and the results are compared with previously obtained single block solutions. The method is expandable to the solution of Euler and Navier-Stokes equations. It is also suited to be executed in a parallel processing environment. Keywords Finite Element Method Transonic Flow, Three Dimensional Flow Potential Flow.
- Fluid Mechanics