Main Article Content
Abstract
Experiments have been conducted on the separated and reattached flows of tunnel wall cavities along with relatively thick approaching boundary layers in incompressible flows. For very shallow cavities, approaching boundary layer thickness affects the base pressure whereas for deep cavities, its effect is minimal. In shallow cavities, the maximum pressure occurs slightly below the shoulder of downstream wall. In deep cavities the vortical flow will have sharp curvature of streamlines at the rear shoulder showing a higher static pressure.
Keywords
Article Details
References
- Fox, J., "Flow Regims in Transfers Rectangle Cavities"Proc.of the 1965 Heat Transfer and Fluid Mechanics.
- Instt., pp.230-247, Standford Uni. Press, 1965.
- McDonald, H., "Turbulent Shear Layer Reattachment with Special Emphasis on the Base Pressure Problem", Aero-Quat. Vol. XV, pp.247-280, 1964.
- Nash, J.F., "An Analysis of Two Dimensional Turbulent Bass Flows including the Effect of Approaching Boundary Layers", Aero. Res. Council, R&M No. 3344, 1963.
- Thomke, G.J., "Separation and Reattachment of Supersonic Turbulent Boundary Layers behind Downstream Facing Steps and Cavities", Rep. No.SM 43062-Doughlas Aircraft Company, Calf, 1964.
- Tani I. Iunchi M. and Komoda H., "Experimental Investigation of Flow Separation with a Step or Groove", Rep.No.364, Aero Res. Instt.-Tokyo, 1964.
- Coates, M.J. and Patterson, J.C., "Unsteady Natural Convection in a Cavity with Non-Uniform Absorption of Radiation",. Journal of Fluid Mechanics", 256: 133-161, ed. 579, 1993.
- Xavier, A, Pascal, H. and Clotilde, R., "Study of the Acoustic Oscillations by Flows over Cavities.
- Part 1.Internal Flows", Proceedings of IMECE2002, ASME International Mechanical Engineering Congress and Exposition,Noveember 17-22, New Orleans, Louisiana, 2002.
- Chung, K., "Characteristics of Compressible Rectangular Cavity-Flows", Journal of Aircraft ,40 (1): 137142, 2003.
- Chung, K.M., "Pressure Fluctuations in Rectangular
- Cavity Flows" Chinese Journal of Mechanics-Series
- A, 15 (3): 97-102, 1999.
- Roshiter, J.E., "Wind Tunnel Experiments on the
- Flow over Rectangular Cavities at Subsonic and
- Transonic Speeds", Aero. Res. Council, R&M-3488-
- HMSO, 1966.
References
Fox, J., "Flow Regims in Transfers Rectangle Cavities"Proc.of the 1965 Heat Transfer and Fluid Mechanics.
Instt., pp.230-247, Standford Uni. Press, 1965.
McDonald, H., "Turbulent Shear Layer Reattachment with Special Emphasis on the Base Pressure Problem", Aero-Quat. Vol. XV, pp.247-280, 1964.
Nash, J.F., "An Analysis of Two Dimensional Turbulent Bass Flows including the Effect of Approaching Boundary Layers", Aero. Res. Council, R&M No. 3344, 1963.
Thomke, G.J., "Separation and Reattachment of Supersonic Turbulent Boundary Layers behind Downstream Facing Steps and Cavities", Rep. No.SM 43062-Doughlas Aircraft Company, Calf, 1964.
Tani I. Iunchi M. and Komoda H., "Experimental Investigation of Flow Separation with a Step or Groove", Rep.No.364, Aero Res. Instt.-Tokyo, 1964.
Coates, M.J. and Patterson, J.C., "Unsteady Natural Convection in a Cavity with Non-Uniform Absorption of Radiation",. Journal of Fluid Mechanics", 256: 133-161, ed. 579, 1993.
Xavier, A, Pascal, H. and Clotilde, R., "Study of the Acoustic Oscillations by Flows over Cavities.
Part 1.Internal Flows", Proceedings of IMECE2002, ASME International Mechanical Engineering Congress and Exposition,Noveember 17-22, New Orleans, Louisiana, 2002.
Chung, K., "Characteristics of Compressible Rectangular Cavity-Flows", Journal of Aircraft ,40 (1): 137142, 2003.
Chung, K.M., "Pressure Fluctuations in Rectangular
Cavity Flows" Chinese Journal of Mechanics-Series
A, 15 (3): 97-102, 1999.
Roshiter, J.E., "Wind Tunnel Experiments on the
Flow over Rectangular Cavities at Subsonic and
Transonic Speeds", Aero. Res. Council, R&M-3488-
HMSO, 1966.