The project has a Water distribution station and transmission pipeline works for the housing development with a combined storage of ten million gallons. Fully automated distribution pumping station up to 10 million gallons capacity per day.

The project is a Ground Storage Reservoir (GSR) consisting of two identical compartments, each compartment will receive water from one inlet pipe located at one side of the compartment and water will be pumped out from the compartment through one outlet pipe located in the sump at other side of the compartment.

Mechartes carried out steady-state multiphase CFD analysis for a typical compartment to verify the water flow profiles in the reservoir as well as in the sump where the pump intake opening is located. The study was carried out for the given baffle arrangement, flow rate & water level conditions.

CFD analysis was carried out for the reservoir to study the flow profiles in the compartment for the given baffle arrangement to estimate the residence time and to verify if there are any recirculation regions observed in the compartment for the given flow rate, water level & baffle arrangement conditions. The objective of the CFD analysis for the reservoir sump where the pump intake opening is located is to assess and anticipateadverse hydraulic conditions that could negatively impact the pump performance near the pump intake.

The flow characteristics in the immediate vicinity of the pump intake for the formation of surface & submerged vortices were also assessed with verification of the pre-swirl angles along with axial velocity variations immediately upstream of the pump intake opening.

The study was carried outbased on the relevant ANSI/HI 9.8 guidelines which specify acceptable hydraulic conditions at pump intakes such as acceptable velocity variations & swirl angles at intake of the pumps and type of free surface & submerged vortices that shall be avoided.