Effect of time period of disposal of heated water on temperature distribution downstream South- Baghdad power station

Abstract EN

This research aims to study the effect of thermal discharged released from South-Baghdad power station on temperature distribution in Tigris river.

For this purpose, a two-dimensional numerical model was applied for estimating temperature distribution and diffusion in the river.

Momentum Conservation Equation and Thermal Energy Equation were used to describe the temperature distribution along the river stretch included in this study.

The model incorporates the (k-ε) turbulence model to calculate the distribution of turbulent viscosity.

The pressure distribution was determined using hydrostatic pressure equation.

The partial differential equations were simplified to obtain the system of linear equations were then solved using Gauss-Elimination .

The numerical model was verified by conducting comparison of observed data from South-Baghdad station with those computed by the model .The comparison results show a good agreement with absolute difference of (15.4% ) and correlation factor of (0.961).

The results of the study show that increasing the time period of disposal of heated water from (100 to 200 to 300 to 400 sec)caused a longitudinal advance of temperature of (33.4%, 20%, 11.8%) , respectively and vertical advance of (66.7%, 20%, 13.4%).