Searching for just a few words should be enough to get started. If you need to make more complex queries, use the tips below to guide you.
Article type: Research Article
Authors: Zebbiche, Toufik; * | Salhi, Merouane | Boun-djad, Mohamed
Affiliations: University SAAD Dahleb of Blida, BP, Blida, Algeria
Correspondence: [*] Corresponding author: Toufik Zebbiche, University SAAD Dahleb of Blida, BP 270 Blida 09000, Algeria. E-mail: z_toufik270169@yahoo.fr.
Abstract: In this publication, we study the supersonic flow around a pointed airfoil in free air. The work is to develop a numerical calculation program using the relations of oblique shock waves; and Prandtl Meyer expansion of constant specific heats around a wedge to determine the characteristics of pointed airfoil in supersonic steady. This regime is characterized by the emergence of a shock wave, usually weak, which will be attached to the leading edge of the airfoil if it has a pointed shape. The airfoil is discretized into flat plate's juxtaposed one to another. It should be noted that the flow is two dimensional. In the place where there is concavity of the wall there will be shock waves and in an other place where there is convexity of the wall there will be an expansion of the flow. The latter type is of Prandtl Meyer. The flow is characterized by increases of entropy seen that there appears a shock wave. The drag is not zero. It is equal to the drag of the shock wave even though the flow is inviscid. We neglect the other components of the drag. Most authors prefer the use of the thin airfoil theory to evaluate the flow around an airfoil. A Comparison is made with this theory for thin thickness to determine a limit of applications of this theory. Applications are made for moderate thickness. The substance chosen is air.
Keywords: Supersonic flow, compressible, pointed airfoil, oblique shock wave, thin airfoil theory, aerodynamic coefficients, Prandtl Meyer expansion, perfect gas, calloricaly perfect gas, thermally perfect gas
DOI: 10.3233/JCM-2012-0398
Journal: Journal of Computational Methods in Sciences and Engineering, vol. 12, no. 3, pp. 213-233, 2012
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
USA
Tel: +1 703 830 6300
Fax: +1 703 830 2300
sales@iospress.com
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
IOS Press
Nieuwe Hemweg 6B
1013 BG Amsterdam
The Netherlands
Tel: +31 20 688 3355
Fax: +31 20 687 0091
info@iospress.nl
For editorial issues, permissions, book requests, submissions and proceedings, contact the Amsterdam office info@iospress.nl
Inspirees International (China Office)
Ciyunsi Beili 207(CapitaLand), Bld 1, 7-901
100025, Beijing
China
Free service line: 400 661 8717
Fax: +86 10 8446 7947
china@iospress.cn
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
如果您在出版方面需要帮助或有任何建, 件至: editorial@iospress.nl