Inscrição na biblioteca: Guest
Visualization of Mechanical Processes: An International Online Journal

Publicou 4 edições por ano

ISSN On-line: 2152-209X

FLOW VISUALIZATION AND PRESSURE DISTRIBUTION ON THE WALLS OF TRANSVERSE CAVITY AT A CHANGE IN TILT ANGLE OF THE FRONT AND BACK WALLS

Volume 2, Edição 3, 2012,
DOI: 10.1615/VisMechProc.v2.i1.20
Get accessGet access

RESUMO

In this work soot-oil visualization of separated flow is made and pressure fields are measured on the walls of transverse cavity with the depth and bottom width H=L=60 mm and relative extension S/L=3. At this the tilt angle of the front and back walls was varied φ = 90°, 80°, 70°, 60°, 45°, and 30°. Visualization was carried out at three velocities of the incident flow U=10, 20, 30 m/s and corresponding Reynolds numbers ReH = 3.9×104, 7.9×104, 1.2×105. Evolution of separated flow and vortex formation at different changes in the tilt angle of sidewalls and incident flow velocities was analyzed with the help of visualization. For comparison visualization was made in a triangular cavity of the same depth and extension. Results of visual observations are proved by measured distributions of static pressure over the cavity walls.

Referências
  1. Briones, A.M., Zelina, J., and Katta, V.R., Flame stabilization in small cavities, AIAA J., vol. 48, no. 1, pp. 224-235, 2010. DOI: 10.2514/1.44162

  2. D'yachenko, A.Yu., Terekhov, V.I., and Yarygina, N.I., Vortex formation and heat transfer in turbulent flow past a transverse cavity with inclined frontal and rear walls, Int. J. Heat Mass Transfer, vol. 51, no. 13-14, pp. 3275-3286, 2008. DOI: 10.1016/j.ijheatmasstransfer.2007.11.039

  3. Grace, S.M., Dewar, W.G., and Wroblewski, D.E., Experimental investigation of the flow characteristics within a shallow wall cavity for both laminar and turbulent upstream boundary layers, Exp. Fluids, vol. 36, pp. 791-804, 2004. DOI: 10.1007/s00348-003-0761-3

  4. Hiwada, M., Mabuchi, I. and Kumada, M., Three-dimensional flow and heat transfer in a rectangular cavity, Heat Transfer-Jpn. Res., vol. 14, no. 1, pp. 75-96, 1985.

  5. Kistler, A.L. and Tan, F.C., Some properties of turbulent separated flows, Phys. Fluids Suppl. , vol. 10, no. 9(2), pp. 165-173, 1967. DOI: 10.1063/1.1762438

  6. Koseff, J.R. and Street, R.L., On end wall effects in a lid-driven cavity flow, Trans.Asme, J. Fluids Eng., vol. 106, no. 4, pp. 385-389, 1984. DOI: 10.1115/1.3243135

  7. Kuhlmann, H.C., Wanschura, M., and Rath, H.J., Elliptic instability in two-sided lid-driven cavity flow, Eur. J. Mech. B/Fluids, vol. 17, no. 4, pp. 561-569, 1998. DOI: 10.1016/S0997-7546(98)80011-3

  8. Kuo, C.H. and Chang, C.W., Shear-layer characteristics across a cavity with a horizontal top plate, Fluid Dyn. Res., vol. 22, pp. 89-104, 1998. DOI: 10.1016/S0169-5983(97)00037-3

  9. Kuo, C.H. and Huang, S.H., Effect of surface mounting of upper plate on oscillating flow structure within cavity, Exp. Therm. Fluid Sci., vol. 27, pp. 755-768, 2003. DOI: 10.1016/S0894-1777(02)00313-8

  10. Maull, D.J. and East, L.F., Three-dimensional flow in cavities, J. Fluid Mech., vol. 16, no. 4, pp. 620-632, 1963. DOI: 10.1017/S0022112063001014

  11. Mills, R.D., The Flow in Rectangular Cavities, PhD Thesis, University of London, 1961.

  12. Ozalp, C., Pinarbasi, A., and Sahin, B., Experimental measurement of flow past cavities of different shapes, Exp. Therm. Fluid Sci., vol. 34, no. 5, pp. 505-515, 2010. DOI: 10.1016/j.expthermflusci.2009.11.003

  13. Roshko, A., Nat. Adv. Comm. Aero., Тech. Note., vol. 3488, 1955.

  14. Striba, Y., Analysis of the flow and heat transfer characteristics for assisting in compressible laminar flow past an open cavity, Int. Commun. Heat Mass Transfer, vol. 35, pp. 901-907, 2008.

  15. Yao, X.-L., Yang, G.-J., Dai, S.-S., and Li, Z., The numerical calculation of the self-sustaining oscillation shear layers in cave-in cavity, Shuidonglixue Yanjiu yu Jinzhan/Chin. J. Hydrodyn., Ser. A., vol. 24, no. 3, pp. 332-340, 2009.

  16. Zdanski, P.S.B., Ortega, M.A., and Fico Jr., N.G.C.R., On the flow over cavities of large aspect ratio: A physical analysis, Int. Commun. Heat Mass Transfer, vol. 33, pp. 458-466, 2006. DOI: 10.1016/j.icheatmasstransfer.2006.01.007

  17. Zhak, V.D., Mukhin, V.A., and Nakoryakov, V.E., Three-dimensional flow and heat transfer in a rectangular cavity, J. Appl. Mech. Tech. Phys., vol. 22, no. 2, pp. 186-189, 1981.

Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa Políticas de preços e assinaturas Begell House Contato Language English 中文 Русский Português German French Spain