Browse > Article

ASYMMETRIC VORTEX CHARACTERISTICS AT A CONE UNDER SUPERSONIC HIGH ANGLE OF ATTACK FLOW  

Park, M.Y. (건국대학교 대학원 항공우주정보시스템공학과)
Noh, K.H. (건국대학교 대학원 항공우주정보시스템공학과)
Park, S.H. (건국대학교 항공우주정보시스템공학과)
Lee, J.W. (건국대학교 항공우주정보시스템공학과)
Byun, Y.H. (건국대학교 항공우주정보시스템공학과)
Publication Information
Journal of computational fluids engineering / v.13, no.2, 2008 , pp. 8-13 More about this Journal
Abstract
A supersonic viscous flow over a five-degree half-angle cone is studied computationally with three-dimensional Navier-Stokes equations. Steady asymmetric solutions show that the asymmetric flow separation is caused by convective instability. The effects of angle of attacks, Reynolds numbers, and Mach numbers have been investigated and it is found that those factors affect the generation of the side force. The side force has the maximum value at ${\alpha}=22^{\circ}$, while over ${\alpha}=22^{\circ}$, asymmetric vortex becomes transient, which results in the unsteady shedding. At the angle of attack of 22 degrees, the side force increases with Reynolds number and decreases with Mach number. The increase of the side force stops over the critical Reynolds number for the present configuration.
Keywords
CFD; High Angle of Attack; Asymmetric Vortex; Side Force;
Citations & Related Records
연도 인용수 순위
  • Reference
1 1992, Rom, J., "High Angle of Attack Aerodynamics," Springer-Verlag, New York, Ch.2
2 2004, Park, S.H. and Kwon, J.H., "Implementation of $k-{\omega}$ Turbulence Models in an Implicit Multigrid Method," AIAA Journal, Vol.42, No.7, pp.1348-1357   DOI   ScienceOn
3 1979, Peake, D.J. and Own, F.K., "Control of Forebody Three-Dimensional Flow Separation," AGARD-CP-262, pp. 15-1-15-46
4 1996, Liu, F. and Zheng, X., "A Strongly Coupled Time-Marching Method for Solving the Navier-Stokes and $k-{\omega}$ Turbulence Model Equations with Multi-grid," Journal of Computational Physics, Vol.128, No.2, pp.289-300   DOI   ScienceOn
5 1992, Tysinger, T.L. and Caughey, D.A., "Alternating Direction Implicit Methods for the Navier-Stokes Equations," AIAA Journal, Vol.30, No.8, pp.2158-2161   DOI
6 1994, Menter, F.R., "Two-Equation Eddy-Viscosity Turbulence Models for Engineering Applications," AIAA Journal, Vol.32, No.8, pp.1598-1605   DOI   ScienceOn
7 1994, Champigny, P., "High Angle of Attack Aerodynamics," AGARD-R-804, pp.5-1-5-19