Numerical Modeling of Flow in Chlorine Disinfection Tanks
Publication: Journal of Hydraulic Engineering
Volume 124, Issue 9
Abstract
The reliability of simulations of flow and disinfection processes in disinfection contact tanks is determined by the accuracy of computations in terms of the hydrodynamic characteristics in the tanks, particularly the accuracy of the calculations of advection and shear stress, which are two problematic terms currently under intensive research. As part of the development of a simulation module for a software package of flow and disinfection process predictions in chlorine contact tanks, various modeling methods and difference schemes have been tested for typical tank configurations, and the results are compared and analyzed. In the software the computation of shear stress terms was originally represented by a depth mean viscosity model, and its results have been compared with that of calculations using the and the Smagorinsky subgrid scale stress models in an attempt to improve upon the model predictions. The discretization of advection terms in the software module was a first-order upwind difference scheme, the results of which also have been compared with that of its two alternatives, the QUICK scheme and a third-order upwind difference scheme. Predictions made by using several combinations of these models and schemes were tested against measurements from a physical model study.
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References
1.
Adams, E. W., and Rodi, W.(1990). “Modeling flow and mixing in sedimentation tanks.”J. Hydr. Engrg., ASCE, 116(7), 895–913.
2.
Agarwal, R. K. (1981). “A third-order-accurate upwind scheme for Navier-Stokes solutions at high Reynolds numbers.”Proc., AIAA 19th Aerospace Sci. Meeting.
3.
Camp, T. R.(1946). “Sedimentation and the design of settling tanks.”Trans. ASCE, 111, 895–936.
4.
Celik, I., Rodi, W., and Stamou, A. (1985). “Prediction of hydrodynamic characteristics of rectangular settling tanks.”Proc., Int. Symp. on Refined Flow Modeling and Turbulence Measurements.
5.
Deardorff, J. W.(1970). “A numerical study of three-dimensional turbulent channel flow at large Reynolds numbers.”J. Fluid Mech., 41, 453–480.
6.
DeVantier, B. A., and Larock, B. E.(1986). “Modeling a recirculation density-driven turbulent flow.”Int. J. Numer. Methods in Fluids, 6(4), 241–253.
7.
DeVantier, B. A., and Larock, B. E.(1987). “Modeling sediment-induced density current in sedimentation basins.”J. Hydr. Engrg., 113(1), 80–94.
8.
Dobbins, W. E.(1944). “Effect of turbulence on sedimentation.”Trans. ASCE, 109, 629–656.
9.
Dronkers, J. J. (1964). Tidal computations in rivers and coastal seas. North-Holland Publishing Co., Amsterdam, The Netherlands.
10.
Edwards, N. A., and Preston, R. W. (1985). “Grid scale oscillations in `flow'—the CERL shallow-water solver.”Rep. No. TPRD/L/2779/N84, Central Electricity Res. Labs., Leatherhead, England, 22.
11.
Falconer, R. A. (1976). “Mathematical modeling of jet-force circulation in reservoirs and harbors,” PhD thesis, Univ. of London, London, England, 237.
12.
Falconer, R. A.(1980). “Numerical modeling of tidal circulation in harbors.”J. Wtrwy., Port, Coast., and Oc. Div., ASCE, 106(1), 31–48.
13.
Falconer, R. A., and Liu, S. Q.(1987). “Mathematical model study of plug flow in a chlorine contact tank.”J. Water and Envir. Mgmt., 1(3), 3279–3290.
14.
Falconer, R. A., and Tebbutt, T. H. Y. (1986). “A theoretical and hydraulic model study of a chlorine contact tank.”Proc., Instn. of Civ. Engrs., Vol. 81, Part 2, 255–276.
15.
Ferrara, R. A., and Harleman, D. R. F.(1981). “Hydraulic modeling for waste stabilization ponds.”J. Envir. Engrg. Div., ASCE, 107(4), 817–830.
16.
Fischer, H. B.(1973). “Longitudinal dispersion and turbulent mixing in open channel flow.”Annu. Rev. of Fluid Mech., 5, 59–78.
17.
Gaskell, P. H., and Lau, A. K. C.(1988). “Curvature-compensated convective transport: Smart, a new boundedness-preserving transport algorithm.”Int. J. Numer. Methods in Fluids, 8, 617–641.
18.
“Guidance manual for compliance with the filtration and disinfection requirements for public water supplies using surface-water source.” (1991b). Am. Water Works Assn. (AWWA), Denver, Colo.
19.
Hart, F. L., Allen, R., Dialesio, J., and Dzialo, J. (1975). “Modifications improve chlorine contact chamber performance.”Water and Sewage Works, Sept., 73–75; Oct., 88–90.
20.
Henderson, F. M. (1966). Open channel flow. Macmillan Publishing Co., New York, N.Y.
21.
Imam, E. H. (1981). “Numerical modeling of rectangular clarifiers,” PhD thesis, Univ. of Windsor, Windsor, Ont., Canada.
22.
Imam, E., McCorquodale, J. A., and Bewtra, J. K.(1983). “Numerical modeling of sedimentation tanks.”J. Hydr. Engrg., ASCE, 109(12), 1740–1754.
23.
Jin, Y. C., and Steffler, P. M.(1992). “Predicitng flow in curved open channels by depth-averaged method.”J. Hydr. Engrg., ASCE, 119(1), 109–124.
24.
Kuipers, J., and Vreugdenhil, C. B. (1973). “Calculations of two-dimensional horizontal flow.”Rep. S 163, Part 1, Delft Hydr. Lab., Delft, The Netherlands.
25.
Larsen, P. (1977). “On the hydraulics of rectangular settling basins, experimental and theoretical studies.”Rep. No. 1001, Dept. of Water Resour. Engrg., Lund Inst. of Technol., Lund Univ., Lund, Sweden.
26.
Leonard, B. P.(1978). “A consistency check for estimating truncation error due to upstream differencing.”Appl. Math. Modeling, 2, 239.
27.
Leonard, B. P.(1979). “A stable and accurate convective modeling procedure based on quadratic upstream interpolation.”Computer Methods in Appl. Mech. and Engrg., 19, 59.
28.
Leonard, B. P. (1988). “Elliptic system finite-difference method.”Handbook of numerical heat transfer, W. J. Minkowycz, E. M. Sparrow, G. E. Schneider, and R. H. Pletcher, eds., John Wiley & Sons, Inc., New York, N.Y., 347–378.
29.
Leschziner, M. A.(1989). “Modeling turbulent recirculating flows by finite-volume methods—Current status and future direction.”Int. J. Heat and Fluid Flow, 10(3), 186–202.
30.
Li, C. W., and Falconer, R. A.(1995). “Depth-integrated modeling of tide induced circulation in a square harbor.”J. Hydr. Res., 33(3), 321–332.
31.
Louie, D. S., and Fohram, M. S. (1968). “Hydraulic model studies of chlorine mixing and contact chambers.”J. Water Pollution Control Fed., 40(2), Part 1, 174–184.
32.
Madsen, P. A., Rugbjerg, M., and Warren, I. R. (1988). “Subgrid modeling in depth integrated flow.”Proc., 21st Coast. Engrg. Conf., B. L. Edge, ed., 505–511.
33.
Manners, A. P. (1992). “Large eddy simulation using curvilinear grids on parallel computers.”Rep., Dept. of Transp. Technol., Loughborough Univ. of Technol., England. Process guidelines for drinking water disinfection . (1989). BEWA (now British Water), London, England.
34.
Rensink, J. H., and Donker, H. J. G. W. (1991). “The effect of contact tank operation on bulking-sludge and biosorption processes.”Water Sci. and Technol., 23(4–6), 857–866.
35.
Rodi, W. (1980). “Turbulence models and their application in hydraulics—A state of the art review.”Proc., IAHR—Sect. on Fundamentals of Div. II: Experimental and Math. Fluid Dyn.
36.
Rosovskii, I. L. (1975). Flow of water in bends of open channels. Academy of Sciences of the Ukrainian SSR, Kiev.
37.
Schamber, D. R., and Larock, B. E.(1981). “Numerical analysis of flow in sedimentation basins.”J. Hydr. Div., ASCE, 107(5), 575–591.
38.
Smagorinsky, J. S.(1963). “General circulation experiments with the primitive equations. Part I: Basic experiments.”Monthly Weather Rev., 91, 99–164.
39.
Stevenson, D. G. (1995). “The design of disinfection contact tanks.”J. CIWEM, 9(Apr.), 146–152.
40.
“Surface-water treatment: The new rules.” (1991a). Am. Water Works Assn., Denver, Colo.
41.
Teixeira, E. C., and Shiono, K. (1992). “An investigation of the hydraulic behaviour of a chlorine contact tank.”Proc., 6th Int. Symp. on Applications of Laser Techniques to Fluid Mech. and Workshop on Computers in Flow Measurements.
42.
Wang, H. (1995). “Numerical modeling of flow and disinfection processes in chlorine contact tanks,” PhD thesis, Univ. of Bradford, Bradford, England, 286.
43.
Zhou, S. P., McCorquodale, J. A., and Godo, A. M.(1994). “Short circuiting and density interface in primary clarifiers.”J. Hydr. Engrg., ASCE, 120(9), 1060–1080.
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Copyright © 1998 American Society of Civil Engineers.
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Published online: Sep 1, 1998
Published in print: Sep 1998
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