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TECHNICAL BRIEFS

Lock-Exchange Flows in Non-Rectangular Cross-Section Channels

[+] Author and Article Information
Luis Thomas, Beatriz Marino

IFAS, UNCPBA, Pinto 399, B7000GHG Tandil, Argentina Researchers of CONICET

J. Fluids Eng 126(2), 290-292 (May 03, 2004) (3 pages) doi:10.1115/1.1677475 History: Received November 13, 2002; Revised September 30, 2003; Online May 03, 2004
Copyright © 2004 by ASME
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References

Pritchard,  D. W., 1956, “The Dynamic Structure of Coastal Plain Estuary,” J. Mar. Res., 15, pp. 33–42.
Hansen,  D. V., and Rattray,  M., 1965, “Gravitational Circulation in Straits and Estuaries,” J. Mar. Res., 23, pp. 104–122.
O’Donnell,  J., 1993, “Surface Fronts in Estuaries: A Review,” Estuaries, 16, pp. 12–39.
Simpson,  J. H., and Nunes,  R. A., 1981, “The Tidal Intrusion Front—An Estuarine Convergence Zone,” Estuarine Coastal and Shelf Science,13, pp. 257–266.
Wong,  K. C., 1994, “On the Nature of Transverse Variability in a Coastal Plain Estuary,” J. Geophys. Res., 99, pp. 209–222.
Wong,  K. C., and Munchow,  A., 1995, “Buoyancy Forced Interaction Between Estuary and Inner Sheft—Observation,” Cont. Shelf Res., 15, pp. 59–88.
Valle-Levinson,  A., and Lwiza,  K. M. M., 1995, “The Effects of Channels and Shoals on Exchange Between the Chesapeake Bay and the Adjacent Ocean,” J. Geophys. Res., 100, pp. 18551–18563.
Simpson, J. E., 1997, Gravity Currents in the Environment and the Laboratory, Cambridge University Press, Cambridge, U.K.
Thomas,  L. P., Marino,  B. M., and Dalziel,  S. B., 2003, “Measurement of Density Distribution in a Fluid Layer by Laser-Induced Fluorescence in Non-Rectangular Cross-Section Channels,” Int. J. Heat Technol.,21, pp. 143–147.

Figures

Grahic Jump Location
Sketches of an arbitrary cross-section channel showing (a) the lateral view of the initial configuration, (b) the exchange flows lateral view as seen some time after withdrawing the gate, and profiles suggested by the box-model (dashed lines), and (c) a cross-section view
Grahic Jump Location
Channel cross-section shapes suggested by Eq. (3) for different values of the parameter α with β=1
Grahic Jump Location
Fractional depth (a) and front velocity ratio (b) of the bottom current for ρ21≈1
Grahic Jump Location
Velocities of the fronts of the gravity currents running over the bottom (circles) and below the free surface (squares) for different values of g′

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