Effect Of Varied Convergent Angles on The Pressure Drop of Venturi meter by CFD Simulation

Abstract

This work describes behaviour of flow inside a venturi meters with varied geometry. In this work, four different venturi models were created by changing the different convergent angles and maintaining the same pipe Dia. and venturi throat diameter. The pressure drop was observed with discrete inlet velocity values in the range of 0.1m/s to 10m/s. Volume flow rate and pressure drop for each configuration were observed for all the inlet velocity values. The basic idea behind variable head meters is that a fluid passing through a constriction with a constant cross-sectional area experiences a pressure drop when the flow rate varies. Because of the relationship between the pressure drop and flow rate, changes in the pressure drop can be used to gauge changes in the flow rate. Four 3D models were created by using SolidWorks CAD software, solid works flow simulation was used to plot the fluid flow characteristics through the flow meter. Pressure drop trajacteries, velocity trajectories were obtained the graphs were plotted by the results obtained from this parametric study. The behaviour of pressure drops with volume flow rate and the pressure drop rate for all the four different geometries are observed in this work.