A venturimeter is one of the accurate flow measurement devices used to measure volumetric flow rate based on differential pressure. Pressure recovery is a problem when flow measurement is done by venturimeter. So, it is necessary to select its geometrical parameters in such a way that minimum pressure loss occurs. In this paper, optimization of geometrical parameters of venturimeter for minimum pressure drop has been done using CFD analysis. For optimization of venturimeter geometry, different parameters like convergent cone angle, divergent cone angle, beta ratio and throat length were considered. Taguchi’s orthogonal array L25 was used for design of experiment and CFD analyses were performed according to that using Ansys CFX 15.0 software. Analysis of variance (ANOVA) was also applied to identify significant parameters for minimum pressure drop in venturimeter. The optimal combination of the geometrical parameters found was as follows: convergent cone angle θ1=17º, divergent cone angle θ2=7º, beta ratio β=0.75 and throat length l=0.007 mm. In this case, the pressure drop in the venturimeter was ∆P=40599.4 Pa. These results can provide support in selection of parameters for design of venturimeter. Keywords: Venturimeter, pressure drop, optimization, CFD, ANOVACite this Article Chirag Sanghani, Dharmesh Jayani. Optimization of Venturimeter Geometry for Minimum Pressure Drop using CFD Analysis. Recent Trends in Fluid Mechanics. 2016; 3(2): 31–35p.
