Effect of water pressure on distribution uniformity in perforated pipeline system

This work investigated the effect of water supply pressure on the water distribution uniformity of a typical perforated pipeline system based on Navier-Stocks equation and computational fluid dynamics(CFD) software CFX.Results show that the CFD technology can accurately predict the outflow of each orifice in a known perforated pipeline water distribution system.The water supply pressure tremendously affects the water distribution uniformity,especially in the orifice far distant from the influent point,and a better water distribution uniformity will be achieved when the water supply pressure increases.When the water supply pressure increases from 0.050 to 0.100 MPa,the uniformity improvement is significant;when the water supply pressure is between 0.100～0.1750 MPa,the uniformity improvement is unconspicuous;and in the case of the water supply pressure exceeding 0.175 MPa,the effect of water supply pressure on the water distribution uniformity increases again,but not as obvious as the case of the water supply pressure in the range of 0.050～0.100 MPa.