The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON FLUID MECHANICS
Transactions ID Number: 53-668
Full Name: Edisson Sávio de Góes Maciel
Position: Engineer
Age: ON
Sex: Male
Address: Rua Demócrito Cavalcanti, 152, Afogados
Country: BRAZIL
Tel: 55 (81) 3428-1769
Tel prefix: 55 (81) 9172-6298
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E-mail address: edissonsavio@yahoo.com.br
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Title of the Paper: Supersonic and Hypersonic Flows on 2D Unstructured Context: Part I
Authors as they appear in the Paper: Edisson Sávio de Góes Maciel
Email addresses of all the authors: edissonsavio@yahoo.com.br
Number of paper pages: 30
Abstract: In this work, numerical simulations involving supersonic and hypersonic flows on an unstructured context are analyzed. The Van Leer and the Radespiel and Kroll schemes are implemented on a finite volume formulation, using unstructured spatial discretization. The algorithms are implemented in their first and second order spatial accuracies. The second order spatial accuracy is obtained by a linear reconstruction procedure based on the work of Barth and Jespersen. Several non-linear limiters are studied, as well two types of linear interpolation, based on the works of Frink, Parikh and Pirzadeh and of Jacon and Knight. Two types of viscous calculation to the laminar case are compared. They are programmed considering the works of Long, Khan and Sharp and of Jacon and Knight. To the turbulent simulations, the Wilcox and Rubesin model is employed. The ramp problem to the inviscid simulations and the re-entry capsule problem to the hypersonic simulations are studied. The!
results have demonstrated that the Van Leer algorithm yields the best results in terms of the prediction of the shock angle of the oblique shock wave in the ramp problem and the best value of the stagnation pressure at the configuration nose in the re-entry capsule problem. In terms of turbulent results, the Wilcox and Rubesin model yields good results, proving the good capacity of this turbulence model in simulate high hypersonic flows. This paper is the first part of this work and is related to the theory. The second paper of this work is concerned with the inviscid results and the third paper with the laminar and turbulent viscous results.
Keywords: Supersonic and hypersonic flows; Unstructured discretization; Van Leer algorithm; Radespiel and Kroll algorithm; Wilcox and Rubesin turbulence model.
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How Did you learn about congress: Aeroespatial Vehicles, Computational Fluid Dynamics, Fluid Mechanics, Finite Volumesations, Unstructured Discretization, Euler and Navier-Stokes Equations
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