Author:
Biswas Samrat,Roy Aritras,Roy Animesh,Majumdar Bireswar,Kumar Prabir
Abstract
In this paper flow field characteristics of double delta wing have been studied both experimentally and numerically at different angles of attack ranging from 0° to 30° at a Reynolds number of 2 x 10<sup>5</sup> based on the root chord length of the wing model. Surface oil flow visualization has been studied on the leeward surface of a sharp edged single beveled 76°/40° cropped double delta wing at subsonic wind tunnel facility. The flow physics is further validated with the help of surface pressure measurement in the context of surface flow pattern. Subsequently CFD (Computational Fluid Dynamics) analysis is carried out using ANSYS Fluent. Comparisons of both qualitative as well as quantitative measurement with experimental techniques and computational work have been carried out. For computational work, the computational domain is meshed with unstructured grids and SA-turbulence model is used.
Reference13 articles.
1. Cunningham, A. M. and DenBoer, R. G., "Low- Speed Unsteady Aerodynamics of a Pitching Straked Wing at High Incidence-Part II: Harmonic Analysis", Jounal of Aircraft, Vol.27, No.1, pp.23-30, January 1990.
2. Polhamus, E. C., "A Concept of the Vortex Lift of Sharp-edge Delta Wings Based on Leading-edgesuction Analogy", NASA, Washington D. C, Technical Report 0130426, December 1966.
3. Hebbar, S. K., Platzer, M. F. and Alkhozam, A. M., "Experimental Study of Vortex Flow Control on Double-delta Wings Using Fillets", Journal of Aircraft, Vol.33, No.4, pp.743-751, July-August 1996.
4. Verhaagen, N. G., "Effect of Reynolds Number on the Flow Over 76/40 degree Double Delta Wings", Journal of Aircraft, Vol.39, No.6, pp.1045-1052, 2002.
5. Sohn, M. H. and Jang, Y. IL., "Visualization and Flowfield Measurements of the Vortical Flow Over a Double-Delta Wing", International Journal of Aeronautical and Space Sciences, Vol.4, No.1, pp.63-74, 2003.