Выходит 6 номеров в год
ISSN Печать: 1948-2590
ISSN Онлайн: 1948-2604
ASYMMETRIC VORTEX FLOW WITH DOUBLE VORTEX BREAKDOWN ON A DELTA WING AT ZERO SIDESLIP
Краткое описание
The results of numerical simulation of the vortex flow around a thin delta wing with a large sweep angle at subsonic speeds within a wide range of angles of attack at zero sideslip are presented. The results on both the integral characteristics and flow topology, as well as on the position of the burst of vortex structures coming off the wing side edges, are compared to available experimental data. The influence of the curvature correction procedure in the two-parameter k-ω shear stress transport turbulence model on the pressure coefficient, velocity component in the vortex core, and vortex breakdown position is shown. Both symmetric and asymmetric solutions to the vortex structure bursts are obtained. At critical angles of attack (αcr ~ 45°), asymmetric breakdown of the vortex structures is obtained. The phenomenon of double vortex breakdown, when the vortex coming off one side of the wing's lateral edge is destroyed twice, is observed for the first time. Verification of the numerical calculations is implemented for all of the considered flow regimes.
-
Wentz,W.H. Jr. and Kohlman, D.L.,Wind tunnel investigations of vortex breakdown on slender sharpedged wings, Report FRL 68-013, Engineering Sciences Division, University of Kansas Center for Research, Inc., Lawrence, KS, 1968.
-
Payne, F.M., Ng, T.T., and Nelson, R.C., Experimental study of the velocity field on a delta wing, in Proc. of AIAA 19th Fluid Dynamics, Plasma Dynamics and Lasers Conference, Paper AIAA-87-1231, 1987.
-
Menter, F.R., Two-equation eddy-viscosity turbulence models for engineering applications, AIAA J., 32(8):1598-1605, 1994.
-
Spalart, P.R. and Shur, M., On the sensitization of turbulence model to rotation and curvature, Aerosp. Sci. Technol., 1(5):297-302, 1997.
-
Smirnov, P.E. and Menter, F.R., Sensitization of the SST turbulence model to rotation and curvature by applying the Spalart-Shur correction term, in Proc. of ASME Turbo Exposition on Power for Land, Sea, and Air, ASME Paper GT 2008-50480, Berlin, Germany, 2008.
-
ANSYS, Inc., ANSYS CFX-Solver Theory Guide 15.0, Canonsburg, PA: ANSYS, Inc., 2013.
-
Earnshaw, P.B. and Lawford, J.A., Low-speed wind-tunnel experiments on a series of sharp-edged delta wings, Aeronautical Research Council Reports and Memoranda No. 3282, 1964.
-
Pirzadeh, Z., Vortical flow prediction using an adaptive unstructured grid method, in Proc. of RTO AVT Symposium on Advanced Flow Management: Part A-Vortex Flows and High Angle of Attack for Military Vehicles, Paper RTO-MP-069(I), 2001.
-
Skow, A.M., Titiriga, A. Jr., and Moore, W.A., Fore-body/wing vortex interactions and their influence on departure and spin resistance, in Proc. of AGARD 247 on High Angle of Attack Aerodynamics, pp. 6.1-6.25, 1978.
-
Vlasenko, V.V., Voloschenko, O.V., Sabelnikov, V.A., and Talyzin, V.A., Methods of propane combustion stabilization in a model high-speed combustion chamber, in Proc. of 21st Science and Technology Conference on Aerodynamics, pp. 81-82, Moscow: TsAGI, 2018.
-
Voecodin, A.V., Asymmetry and nonuniqueness of the solution of the problem of separated flow over a slender conical wing-body combination, TsAGI Sci. J., 40(6):669-682, 2009.
-
Voevodin, A.V., Asymmetry and non-uniqueness of the solution to the problem of a separated flow about a slender wing/low-aspect-ratio body configuration with sideslip, TsAGI Sci. J., 43(2):147-154, 2012.
-
Davidson, P.A., Turbulence: An Introduction for Scientists and Engineers, 2nd ed., New York: Oxford University Press, 2015.
-
Batchelor, G.K., The Theory of Homogeneous Turbulence, New York: Cambridge University Press, 1953.
-
Batchelor, G.K., An Introduction to Fluid Dynamics, New York: Cambridge University Press, 2000.
-
Osipov, K.A., Analysis of subsonic vortex flow over the model of maneuverable aircraft using computational fluid dynamics methods, TsAGI Sci. J., 47(7):685-707, 2016.
-
Osipov, K.A., Effect of vortex breakdown on lateral aerodynamic coefficients of a maneuverable aircraft model, TsAGI Sci. J., 48(2):115-125, 2017.