Inviscid Flow Solution Using A Novel Unstructured Gird Generation Method

سال انتشار: 1387
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 1,865

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شناسه ملی سند علمی:

ISME16_809

تاریخ نمایه سازی: 20 آبان 1386

چکیده مقاله:

The unsteady and inviscid compressible flow around a circular cylinder and airfoil has been solved using a cell-centered finite volume method. A new algorithm for the generation of unstructured triangular grids was used to discretize the computational flow domain. Automatic grid generation, cell size distribution , and geometry treatment are some of the grid algorithm vapabilities. Euler flow solutions have been obtained for subsonic and transonic flow conditions. The subsonic solution of flow around a circular cylinder grid vertified the unstructured grid techniques, and was compared with an analytical solution. Transonic solution over the same grid fully converged after only 2791 iterations. The grid quality resulted in smooth pressure contours. Transonic flow solutions were also obtained for airfoil at free stream Mach number of 0.8 and attack angle of 1.25. the true position of the shock in illustrated in the pressure coefficient plots, and shows the shock capturing capability of the solution method. The convergence history obtained, points to the accuracy of the numerical solution.

نویسندگان

Alireza Dezfuli

Graduate Student Mechanical Engineering Department Shahid Chamran University, Ahvaz, Iran

Seyed Bahrainian

Assistant Professor Mechanical Engineering Department Shahid Chamran University, Ahvaz, Iran

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