Numerical Simulation of Flow over a Semicylinder Weir
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VIEW THE REPLYPublication: Journal of Irrigation and Drainage Engineering
Volume 140, Issue 6
Abstract
Laboratory experiments are conducted to measure the free-surface profile and the velocity field of an open channel flow over a semicylinder weir. The streamwise velocities of the flow are measured using a laser Doppler anemometer. The numerical simulation of the flow case having similar conditions with the experiment is performed. The basic equations of the problem are solved using the finite-volume method. A grid convergence analysis is applied to ensure the discretization error keeping within an acceptable limit for the predicted velocities. In the numerical modeling, the volume of fluid method is used to compute the free surface of the flow that interacts with the semicylindrical structure. In the numerical analysis, standard , renormalization group , realizable , modified , shear stress transport, and Reynolds stress turbulence closure models are employed. The computed results for the velocity field and free-surface profile of the flow are compared with the experimental data. The comparisons of the experimental and numerical results show that the numerical simulation using the Reynolds stress turbulence model provides better predictions for the horizontal velocities than the other turbulence models used herein.
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References
Akoz, M. S., Kirkgoz, M. S., and Oner, A. A. (2009). “Experimental and numerical modeling of a sluice gate flow.” J. Hydraul. Res., 47(2), 167–176.
Ansys 12 [Computer software]. Canonsburg, PA, Ansys.
Chanson, H., and Montes, J. S. (1998). “Overflow characteristics of circular weirs: Effects of inflow conditions.” J. Irrigat. Drain. Eng., 152–162.
Chatila, J., and Tabbara, M. (2004). “Computational modeling of flow over an ogee spillway.” Comput. Struct., 82(22), 1805–1812.
Hager, W. H., and Schwalt, M. (1994). “Broad-crested weir.” J. Irrigat. Drain. Eng., 13–26.
Hargreaves, D. M., Morvan, H. P., and Wright, N. G. (2007). “Validation of the volume of fluid method for free surface calculation: The broad-crested weir.” Eng. Appl. Comput. Fluid Mech., 1(2), 136–146.
Hirt, C. W., and Nichols, B. D. (1981). “Volume of fluid (Vof) method for the dynamics of free boundaries.” J. Comput. Phys., 39(1), 201–225.
Johnson, M. C. (2000). “Discharge coefficient analysis for flat-topped and sharp-crested weirs.” Irrigat. Sci., 19(3), 133–137.
Kirkgoz, M. S., Akoz, M. S., and Oner, A. A. (2008). “Experimental and theoretical analyses of two-dimensional flows upstream of broad-crested weirs.” Can. J. Civ. Eng., 35(9), 975–986.
Kirkgoz, M. S., and Ardiclioglu, M. (1997). “Velocity profiles of developing and developed open channel flow.” J. Hydraul. Eng., 1099–1105.
Launder, B. E., Reece, G. J., and Rodi, W. (1975). “Progress in the development of a Reynolds-stress turbulence closure.” J. Fluid Mech., 68(3), 537–566.
Launder, B. E., and Spalding, D. B. (1974). “The numerical computation of turbulent flows.” Comput. Meth. Appl. Mech. Eng., 3(2), 269–289.
Menter, F. R. (1994). “2-equation eddy-viscosity turbulence models for engineering applications.” AIAA J., 32(8), 1598–1605.
Orgaz, O. C. (2013). “Potential flow solution for open-channel flows and weir-crest overflow.” J. Irrigat. Drain. Eng., 551–559.
Patankar, S. V. (1980). Numerical heat transfer and fluid flow, Hemisphere Publishing, New York.
Patankar, S. V., and Spalding, D. B. (1972). “A calculation procedure for heat, mass and momentum transfer in three-dimensional parabolic flows.” Int. J. Heat Mass Tran., 15(10), 1787–1806.
Ramamurthy, A. S., Tim, U. S., and Rao, M. V. J. (1987). “Flow over sharp-crested plate weirs.” J. Irrigat. Drain. Eng., 163–172.
Ramamurthy, A. S., and Vo, N. D. (1993). “Characteristics of circular-crested weir.” J. Hydraul. Eng., 1055–1062.
Roache, P. J. (1998). “Verification of codes and calculations.” AIAA J., 36(5), 696–702.
Sarker, M. A., and Rhodes, D. G. (2004). “Calculation of free-surface profile over a rectangular broad-crested weir.” Flow Meas. Instrum., 15(4), 215–219.
Shih, T. H., Liou, W. W., Shabbir, A., Yang, Z. G., and Zhu, J. (1995). “A new Kappa-Epsilon eddy viscosity model for high reynolds-number turbulent flows.” Comput. Fluids, 24(3), 227–238.
Tadayon, R., and Ramamurthy, A. S. (2009). “Turbulence modeling of flows over circular spillways.” J. Irrigat. Drain. Eng., 493–498.
Wilcox, D. C. (1988). “Reassessment of the scale-determining equation for advanced turbulence models.” AIAA J., 26(11), 1299–1310.
Wilcox, D. C. (1998). Turbulence modeling for CFD, DCW Industries, La Canada, CA.
Wolfshtein, M. (1969). “The velocity and temperature distribution in one-dimensional flow with turbulence augmentation and pressure gradient.” Int. J. Heat Mass Tran., 12(3), 301–318.
Yakhot, V., and Orszag, S. A. (1986). “Renormalization-group analysis of turbulence.” Phys. Rev. Lett., 57(14), 1722–1724.
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© 2014 American Society of Civil Engineers.
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Received: May 25, 2013
Accepted: Dec 26, 2013
Published online: Mar 4, 2014
Published in print: Jun 1, 2014
Discussion open until: Aug 4, 2014
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