CFD ANALYSIS FOR IMPROVEMENT IN EFFECTIVENESS OF POTABLE WATER STORAGE RESERVOIR

Abstract

Plow modeling using C- D provides engineers with the ability to accurately determine the performance of design concepts, reducing the need for physical testing and building of prototypes. This makes it possible to evaluate many more designs, resulting in a substantial improvement in performance. Present study aims at studying the stagnant zones and minimum short circuiting pathways in potable water reservoir with the use of CFD (Computational Fluid Dynamic) analysis. The effect of baffles in different numbers and at different positions in the water reservoir on its effectiveness to minimize the stagnant zones inside it as compared to the bare reservoir without any flow modifier has been studied. Tracer dispersion study has been carried out using the step input of tracer, tracer being representation of the new water stream coming into the reservoir replacing the old water present inside the reservoir. It has been found that with the use of baffles, area of stagnant zone is reduced due to large velocity zone inside the reservoir as compared to the case with no baffles used in the reservoir. Key words: Potable water storage reservoir, Computational fluid dynamics, Stagnant zone, baffle, short circuiting.