A Navier-Stokes Solver for Compressible Turbulent Flows on Quadtree and Octree Based Cartesian Grids
سال انتشار: 1398
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 169
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شناسه ملی سند علمی:
JR_JAFM-12-2_022
تاریخ نمایه سازی: 15 دی 1400
چکیده مقاله:
Cartesian grids represent a special extent in unstructured grid literature. They employ chiefly created algorithms to produce automatic meshing while simulating flows around complex geometries without considering shape of the bodies. In this article, firstly, it is intended to produce regionally developed Cartesian meshes for two dimensional and three dimensional, disordered geometries to provide solutions hierarchically. Secondly, accurate results for turbulent flows are developed by finite volume solver (GeULER-NaTURe) with both geometric and solution adaptations. As a result, a “hands-off” flow solver based on Cartesian grids as the preprocessor is performed using object-oriented programming. Spalart-Allmaras turbulence model added Reynolds Averaged Navier Stokes equations are solved for the flows around airfoils and wings. The solutions are validated and verified by one two dimensional and one three dimensional turbulent flow common test cases in literature. Both case studies disclose the efficaciousness of the developed codes and qualify in convergence and accuracy.
کلیدواژه ها:
Cartesian grid generation ، Finite volume solver ، Turbulent flows ، Object ، oriented programming ، RANS equations ، Spalart ، Allmaras (SA) turbulence model
نویسندگان
E. Kara
University of Gaziantep, Gaziantep, ۲۷۳۱۰, Turkey
A. İ. Kutlar
University of Gaziantep, Gaziantep, ۲۷۳۱۰, Turkey
M. H. Aksel
Middle East Technical University, Ankara, ۰۶۸۰۰, Turkey