The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON FLUID MECHANICS
Transactions ID Number: 53-671
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 III
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 for the inviscid supersonic simulations and the re-entry capsule for the viscous hypersonic simulations are!
considered. The results have demonstrated that the Van Leer algorithm yields the best results in terms of the prediction of the wall pressure distribution and the shock angle in the inviscid simulations and the best value of the stagnation pressure at the configuration nose in the viscous simulations. Moreover, the Van Leer algorithm in the SS case and using the Wilcox and Rubesin turbulence model predicts the best value of the lift aerodynamic coefficient. Hence, the Wilcox and Rubesin model yielded good results, proving its good capacity to predict high hypersonic flows. This paper is the third part of this work and is concerned with the 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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