Lock-exchange flows driven by density differences in non-rectangular cross-section channels are investigated in situations that resemble estuaries, navigation canals and hydraulic engineering structures. A simple analytical model considering stratified flows suggests practical relationships corroborated by results of laboratory experiments carried out in a straight channel of triangular cross-section.
Issue Section:
Technical Briefs
1.
Pritchard
, D. W.
, 1956
, “The Dynamic Structure of Coastal Plain Estuary
,” J. Mar. Res.
, 15
, pp. 33
–42
.2.
Hansen
, D. V.
, and Rattray
, M.
, 1965
, “Gravitational Circulation in Straits and Estuaries
,” J. Mar. Res.
, 23
, pp. 104
–122
.3.
O’Donnell
, J.
, 1993
, “Surface Fronts in Estuaries: A Review
,” Estuaries
, 16
, pp. 12
–39
.4.
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
.5.
Wong
, K. C.
, 1994
, “On the Nature of Transverse Variability in a Coastal Plain Estuary
,” J. Geophys. Res.
, 99
, pp. 209
–222
.6.
Wong
, K. C.
, and Munchow
, A.
, 1995
, “Buoyancy Forced Interaction Between Estuary and Inner Sheft—Observation
,” Cont. Shelf Res.
, 15
, pp. 59
–88
.7.
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
.8.
Simpson, J. E., 1997, Gravity Currents in the Environment and the Laboratory, Cambridge University Press, Cambridge, U.K.
9.
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
.Copyright © 2004
by ASME
You do not currently have access to this content.