Development of a 3D unstructured CFD method
Abstract
A computational fluid dynamics (CFD) program is developed for analyzing complex configurations and flowfields. The program uses unstructured grid methods in a finite volume formulation to solve the compressible NavierStokes equations. A two equation turbulence model is included. An upwind differencing scheme is employed for computing the inviscid fluxes, while central differencing is used for the viscous fluxes. The grid can be dynamically moved to adapt to flowfield gradients or track the motion of moving boundaries. The motion of the grid is accurately modeled through the grid speed metrics. Thus, time accurate unsteady analyses can be performed. The ability to add or delete points from the grid also exists. Thus, initial meshes can be enhanced to better solve the flowfield features. Several two dimensional axisymmetric and three dimensional cases are included to demonstrate the different capabilities of the program.
 Publication:

Ph.D. Thesis
 Pub Date:
 1991
 Bibcode:
 1991PhDT........33K
 Keywords:

 Compressible Flow;
 Computational Fluid Dynamics;
 Computational Grids;
 Finite Volume Method;
 Flow Distribution;
 Mathematical Models;
 NavierStokes Equation;
 Three Dimensional Models;
 Axisymmetric Flow;
 Finite Difference Theory;
 Grid Generation (Mathematics);
 Inviscid Flow;
 Turbulence Models;
 Unsteady Flow;
 Viscous Flow;
 Fluid Mechanics and Heat Transfer