TWO-DIMENSIONAL NUMERICAL MODEL FOR THERMAL POLLUTION OF SINGEL SOURCE IN RIVER

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Rafa H. Al-Suhaili
Mohsin Jasim Nasir

Abstract

The aim of this research was to apply a numerical model capable of describing the thermal pollution in rivers. For this purpose a two-dimensional numerical model was applied for estimating temperature distribution in a river Momentum Conservation Equation and Thermal Energy Equation were used to describe the fdistribution and diffusion of temperature along the river subjected to thermal pollution point source. Furthermore the model incorporates the (k-e) turbulence model to calculate the distribution of turbulent viscosity The pressure distribution was determined using hydrostatic pressure equation. The partial differential equations were formalized and simplified to be solved using Alternative direction implicit- explicit method (ADI) with upwinding technique. The resulting system of linear simultaneous equations were then solved using Gauss-Elimination method. A laboratory physical model was built to find experimental data. These data were used for model verification with data obtained from Al-Daura power station and Tigris river. The model was found to be sensitive to the variation of river velocity and density difference and the model was found to be insensitive to the wind speed. The comparison of observed results from Al- Daura power station and laboratory physical model with those computed by the numerical model show a good agreement. The maximum absolute difference percentage are (16.2%, 8.6%)  respectively 

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How to Cite

“TWO-DIMENSIONAL NUMERICAL MODEL FOR THERMAL POLLUTION OF SINGEL SOURCE IN RIVER” (2006) Journal of Engineering, 12(01), pp. 25–35. doi:10.31026/j.eng.2006.01.03.

References

Al-Chalabi M. A. (1994) Numerical Model of Thermal Pollution Transport in river, M.Sc Thesis , College of Engineering University of Baghdad

Bormans M and Webster Ian (1998) Dynamics of temperature stratification in lowland rivers J.Hyd. Div, Vol.124, No.10,pp. 1059-1063

Catirolgu C., and Yurteri, (1998) Methodology for predicting cooling water effects on fish, J.Env. Eng., Vol. 124, No.7, pp.612-618

Cooper A... (1987) ValidatiResearch Center, Waling forumerical model of a buoyant plume Report. No.SR121, Hydraulic

Research Center Waling ford

Euphrates Company for studying and design of irrigation projects (2001).

Joody A.S., (2001), Studying of the Heated Water Released from AL-Doura Power Station, M.Sc. Thesis, College of Engineering, University of AL- Mustanseryya.

Kadhem T.J., (2002), Design of two-dimensional numerical model for thermal effluents transport in Tigris river released from South-Baghdad electric power station, M.Sc. Thesis, University of Technology.

Li-Renyu and Righetto A.M. (1998), Tidal and transport modeling using turbulence K-e model. J.Hyd. Div, Vol.124, No.3, pp.212-221.

Mathur S.P., (1976), Thermal discharges, Handbook of water resources and pollution control Harry W.Gehm and Jacob I. Bregrman,eds, Van Nostrand Reinhold Comp.pp.717-779.

Rastogi A. K., and Rodi, W., (1978), Prediction of heat and mass transfer in open channels, J.Hyd.Div. Vol. 104, No.3, pp.397-420

Richard N.L, (2000), Professor of environmental policy, department of environmental science and engineering, university of north Caroline, Email:[email protected]. 1997),

John Wiley and Sons, Neves and Silvia Lourenco (1997), Rute com/Physsci/physical/moor/messages/102.htm. Internet. Roberson J.A, and Crowe, C.T., ( Inc. New York. Pollution, Thermal

Smith G.D., (1978), Numerical solution of partial differential equation, finite difference methods Oxford University Press, England.

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