A THREE DIMENSIONAL MULTIGRID REYNOLDS-AVERAGED NAVIER-STOKES SOLVER FOR UNSTRUCTURED MESHES

A three-dimensional unstructured mesh Reynolds averaged Navier-Stokes solver is described. Turbulence is simulated using a single field-equation model. Computational overheads are minimized through the use of a single edge-based data-structure, and efficient multigrid solution technique, and the use of multi-tasking on shared memory multi-processors. The accuracy and efficiency of the code are evaluated by computing two-dimensional flows in three-dimensions and comparing with results from a previously validated two-dimensional code which employs the same solution algorithm. The feasibility of computing three-dimensional turbulent flows on grids of several million points in less than two hours of wall clock time is demonstrated.

[1]  W. K. Anderson,et al.  Navier-Stokes Computations and Experimental Comparisons for Multielement Airfoil Configurations , 1993 .

[2]  Dimitri J. Mavriplis,et al.  Implementation of a parallel unstructured Euler solver on the CM-5 , 1994 .

[3]  Dimitri J. Mavriplis,et al.  Navier-stokes applications to high-lift airfoil analysis , 1995 .

[4]  Rainald Loehner,et al.  Matching semi-structured and unstructured grids for Navier-Stokes calculations , 1993 .

[5]  Dimitri J. Mavriplis,et al.  Algebraic turbulence modeling for unstructured and adaptive meshes , 1990 .

[6]  V. Venkatakrishnan,et al.  A UNIFIED MULTIGRID SOLVER FOR THE NAVIER-STOKES EQUATIONS ON MIXED ELEMENT MESHES , 1995 .

[7]  Dimitri J. Mavriplis,et al.  Multigrid solution of compressible turbulent flow on unstructured meshes using a two-equation model , 1991 .

[8]  Timothy J. Barth,et al.  Numerical aspects of computing high Reynolds number flows on unstructured meshes , 1991 .

[9]  DimitriJ.,et al.  TURBULENT FLOW CALCULATIONS USING UNSTRUCTURED AND ADAPTIVE MESHES , 2022 .

[10]  Dimitri J. Mavriplis,et al.  Unstructured and adaptive mesh generation for high Reynolds number viscous flows , 1991 .

[11]  V. Venkatakrishnan,et al.  A PERSPECTIVE ON UNSTRUCTURED GRID FLOW SOLVERS , 1995 .

[12]  L Rumsey Christopher,et al.  A Comparison of the Predictive Capabilities of Several Turbulence Models Using Upwind and Central-Difference Computer Codes , 1993 .

[13]  Warren Davis,et al.  High lift multiple element airfoil analysis with unstructured grids , 1993 .

[14]  P. Spalart.  A One-Equation Turbulence Model for Aerodynamic Flows , 1992 .

[15]  Joel H. Saltz,et al.  Implementation of a parallel unstructured Euler solver on shared- and distributed-memory architectures , 1992, Supercomputing '92.

[16]  Rainald Loehner,et al.  Adaptive edge-based finite element schemes for the Euler and Navier-Stokes equations on unstructured grids , 1993 .

[17]  D. Mavriplis.  Three dimensional unstructured multigrid for the Euler equations , 1991 .