Vortex Convection Produced by V‐Shaped Dihedral Obstruction
Publication: Journal of Hydraulic Engineering
Volume 120, Issue 11
Abstract
Strong convection can be produced by placing a V‐shaped plate in a horizontal flow. Vortices that shed from the plate coalesce with neighboring ones to form a horseshoe‐shaped vortex. The self‐induced upward motion produced due to the shape and the flow converging and surmounting the plate raises the vortex head, resulting in the vertical convection. The dependence of the motion of the three‐dimensional vortex filaments on the dihedral angle of the V‐shaped dihedral plate and Reynolds number of the mean flow have been numerically simulated. It was found that the maximum vortex raising height can be attained with a dihedral angle of about 90°
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Asaeda, T., Horikawa, K., and Kaneko, M. (1991). “Vertical convection introduced by a V‐shaped plate structure.” Proc., Coastal Zone 91, ASCE, New York, N.Y., 297–308.
2.
Asaeda, T., Nakai, M., Manandhar, S. K., and Tamai, N. (1989). “Sediment entrainment in channel with rippled bed.” J. Hydr. Engrg., ASCE, 115(3), 327–339.
3.
Asaeda, T., Nakai, M., Tamai, N., and Horikawa, K. (1990). “Rising current production by a V‐shaped plate.” J. Hydr. Coast and Envir. Engrg., Tokyo, Japan, 473, 83–90 (in Japanese).
4.
Asaeda, T., Ozaki, T., Yoshida, K., Kondo, Y., and Goami, Y. (1991). “Upwelling current produced by a V‐shaped dihedral structure.” Proc., Ocean 91, Institute of Electrical and Electronics Engineering (IEEE), New York, N.Y., 413–418.
5.
Fiebig, M., Brockmeier, U., Mitra, N. K., Guntermann, T. (1989). “Structure of velocity and temperature fields in laminar channel flows with longitudinal vortex generators.” Numerical Heat Transfer, 15 (part A), 281–302.
6.
Fiebig, M., Kallweit, P., Mitra, N. K., Tiggelbeck, S. (1991). “Heat transfer enhancement and drag by longitudinal vortex generators in channel flow.” Exp. Therm. and Fluid Sci., Vol. 4, 103–114.
7.
Hasimoto, H. (1972). “A solution on a vortex filament.” J. Fluid Mech., 51(3), 477–485.
8.
Hunt, J. C. R., and Snyder, W. H. (1980). “Experiments on stably and neutrally stratified flows over a model three‐dimensional hill.” J. Fluid Mech., 96(4), 671–704.
9.
Ikeda, S., and Asaeda, T. (1983). “Sediment suspension with rippled bed.” J. Hydr. Engrg., ASCE, 109(3), 409–423.
10.
Leonard, A. (1985). “Computing three‐dimensional incompressible flows with vortex elements.” Annu. Rev. Fluid Mech., 17, 523–559.
11.
Marino Forum 21. (1990). “Development of artificial upwelling technology.” Rep., Tokyo, Japan, 16.
12.
Tamai, N., Asaeda, T., and Tanaka, N. (1987). “Vortex structures around a hemispheric hump.” Boundary‐Layer Meteorology, 39(3), 301–314.
Information & Authors
Information
Published In
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: Feb 19, 1993
Published online: Nov 1, 1994
Published in print: Nov 1994
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.