JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Large Eddy Simulation of Rectangular Open-Channel Flow using OpenFOAM
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Large Eddy Simulation of Rectangular Open-Channel Flow using OpenFOAM
Ban, Chaewoong; Choi, Sung-Uk;
  PDF(new window)
 Abstract
This study presents numerical simulation of turbulent flows in a rectangular open-channel that has a width-to-depth ratio of 2 using the source code provided by OpenFOAM. Large eddy simulations are carried out by solving the filtered continuity and momentum equations numerically. For the non-isotropic residual stress term, Smagorinsky's (1963) model is used. The flow in the open-channel whose width-to-depth ratio is 2, from experiment of Tominaga et al. (1989), is simulated numerically. Simulation results are compared with measured data by Tominga et al. (1989) and Nezu and Rodi (1985) and with LES data by Shi et al. (1999). Comparisons revealed that the model simulates the mean flow and turbulence statistics well. Specifically, the model reproduced the inner secondary currents located at the corner of sidewall and free surface successfully. In addition, the vortical component of turbulence intensity shows bulged contours towards the bottom edge.
 Keywords
Large eddy simulation;Turbulence;OpenFOAM;Inner secondary currents;Reynolds stress;Turbulence intensity;
 Language
Korean
 Cited by
 References
1.
Cater, J. E. and Williams, J. J. R. (2008). "Large eddy simulation of a long asymmetric compound channel." Journal of Hydraulic Research, Vol. 46, No. 4, pp. 445-453. crossref(new window)

2.
Cui, J. and Neary, V. S. (2008). "LES study of turbulent flows with submerged vegetation." Journal of Hydraulic Research, Vol. 46, No. 3, pp. 307-316. crossref(new window)

3.
Grega, L. M., Wei, T., Leighton, R. I. and Neves, J. C. (1995). "Turbulent mixed- boundary flow in a corner formed by a solid wall and a free surface." Journal of Fluid Mechanics, Vol. 294, pp. 17-46. crossref(new window)

4.
Harlow, F. H. and Welch, J. E. (1965). "Numerical calculation of time-dependent viscous incompressible flow of fluid with free surface." Physics of Fluids, Vol. 8, p. 2182. crossref(new window)

5.
Hsu, T. Y., Grega, L. M., Leighton, R. I. and Wei, T. (2000). "Turbulent kinetic energy transport in a corner formed by a solid wall and a free surface." Journal of Fluid Mechanics, Vol. 410, pp. 343-366. crossref(new window)

6.
Issa, R. I., Gosman, A. D. and Watkins, A. P. (1986). "The computation of compressible and incompressible recirculating flows." Journal of Computational Physics, Vol. 62, No. 1, pp. 62-82.

7.
Joung, Y. and Choi, S. U. (2010). "Direct numerical simulation of low Reynolds number flows in an open-channel with sidewalls." International Journal for Numerical Methods in Fluids, Vol. 62, No. 8, pp. 854-874.

8.
Kang, H. and Choi, S. U. (2006). "Reynolds stress modelling of rectangular open-channel flow." International Journal for Numerical Methods in Fluids, Vol. 51, No. 11, pp. 1319-1334. crossref(new window)

9.
Kara, S., Stoeeser T. and Sturm T. W. (2012). "Turbulence statistics in compound channels with deep and shallow overbank flows." Journal of Hydraulic Research, Vol. 50, No. 5, pp. 482-493. crossref(new window)

10.
Nezu, I. and Nakagawa, H. (1993). Turbulence in open-channel flows, Monograph, Balkema, Rotterdam, The Netherlands.

11.
Nezu, I. and Rodi, W. (1985). "Experimental study on secondary currents in open channel flow." 21st IAHR Congress, Melbourne, Australia, Vol. 2, pp. 19-23.

12.
Patankar, S. V. and Spalding, D. B. (1972). "A calculation procedure for heat, mass and momentum transfer in three-dimensional parabolic flows." International Journal of Heat and Mass Transfer, Vol. 15, No. 10, pp. 1787-1806. crossref(new window)

13.
Shi, J., Thomas, T. G. and Williams, J. J. R. (1999). "Large-eddy simulation of flow in a rectangular open channel." Journal of Hydraulic Research, Vol. 37, No. 3, pp. 345-361. crossref(new window)

14.
Smagorinsky, J. (1963). "General circulation experiments with the primitive equations: I. the basic experiment." Monthly Weather Review, Vol. 91, No. 3, pp. 99-164. crossref(new window)

15.
Tominaga, A., Nezu, I., Ezaki, K. and Nakagawa, H. (1989). "Three-dimensional turbulent structure in straight open channel flows." Journal of Hydraulic Research, Vol. 27, No. 1, pp. 149-173. crossref(new window)

16.
Van Driest, E. R. (1956). "On the turbulent flow near a wall." Journal of Aeronautical Science, Vol. 23, pp. 1007-1011. crossref(new window)

17.
Xie, Z., Lin, B. and Falconer, R. A. (2012). "Large-eddy simulation of the turbulent structure in compound opne-channel flows." Advances in Water Resources, Vol. 53, pp. 66-75.

18.
Yang, W. and Choi, S. U. (2002). "Three-dimensional numerical simulation of local scour around the bridge pier using large eddy simulation." Journal of the Korean Society of Civil Engineers, Vol. 22, No. 4-B, pp. 437-446 (in Korean).