Three‐Dimensional Calculation of Scour Around Cylinders
Publication: Journal of Hydraulic Engineering
Volume 119, Issue 9
Abstract
The flow of water around a cylinder was calculated by a numerical model. The model used a finite‐volume method to solve the nontransient Navier‐Stokes equations for three dimensions on a general nonorthogonal grid. The turbulence model was used to solve the Reynolds‐stress term. The flow field gave the shear stress on the boundaries, which was used to calculate sediment concentration for the bed elements. The diffusion/convection equation for the sediment concentration was solved and continuity for the sediment concentration gave changes in the bed elevation. Using the modified bed, a new flow field was calculated, and also a new sediment concentration. This sequence was repeated until the depth of the calculated scour hole was identical to the depth of the scour hole from a physical model study. The rest of the geometry of the resulting scour hole compared well with the measured scour hole from the experimental study. Also other flow characteristics given by the numerical model were found to be in agreement with observations from the experimental study.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Carstens, T. (1975). “Seabed scour by currents near platforms.” 3rd Int. Conf. on Port and Ocean Engrg. under Arctic Conditions, University of Alaska, Fairbanks, Alaska.
2.
Dargahi, B. (1990). “Controlling mechanism of local scouring.” J. Hydr. Engrg., 116(10), 1197–1214.
3.
Melaaen, M. C. (1990). “Analysis of curvelinear non‐orthogonal coordinates for numerical calculation of fluid flow in complex geometries.” Dr. Ing. dissertation, The Norwegian Institute of Technology, Trondheim, Norway.
4.
Melaaen, M. C. (1992a). “Calculation of fluid flows with staggered and non staggered curvilinear nonorthogonal grids—the theory.” Numerical Heat Transfer, Part B, 21, 1–19.
5.
Melaaen, M. C. (1992b). “Calculation of fluid flows with staggered and nonstaggered curvilinear nonorthogonal grids—a comparison.” Numerical Heat Transfer, Part B, 21, 21–39.
6.
Melaaen, M. C. (1992c). “Three‐dimensional numerical analysis of isothermal fluid flow in gas turbine combustors.” Int. J. Numer. Methods for Heat and Fluid Flow, 2(5), 441–454.
7.
Olsen, N. R. B. (1991). “A three‐dimensional numerical model for simulation of sediment movement in water intakes,” Dr. Ing. dissertation, The Norwegian Institute of Technology, Trondheim, Norway.
8.
Schlichting, H. (1979). Boundary layer theory, 7th Ed., McGraw‐Hill Book Co., New York, N.Y.
9.
Torsethaugen, K. (1975). “Lokalerosjon ved store konstruksjoner.” SINTEF Rep. No. STF60A75055, The Norwegian Hydrotechnical Laboratory, Trondheim, Norway (in Norwegian).
10.
Vanoni, V. (1975). “Sedimentation engineering,” ASCE manuals and reports on engineering practice, No. 54, ASCE, New York, N.Y.
11.
Van Rijn, L. C. (1987). “Mathematical modeling of morphological processes in the case of suspended sediment transport,” PhD thesis, Delft University of Technology, Delft, The Netherlands.
Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 119 • Issue 9 • September 1993
Pages: 1048 - 1054
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: Oct 7, 1991
Published online: Sep 1, 1993
Published in print: Sep 1993
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.