Effect of Geometric Configuration of the Impeller on the Performance of Liquivac Pump: Single Phase Flow (Water)

Liquivac pumps, with their unique shaped twin start helical rotor, have found utility in various sectors but the major drawback limiting global exploitation is low performance. This paper investigates study of performance pump produced by Tomlinson Hall Ltd. Experimental data was used to validate a numerical model developed Ansys Fluent 20.2 for pump. Four different geometric models rotor were tested numerically find optimum design using blade number and pitch length as criteria achieve improved efficiency. The choice turbulence an important factor most accurate prediction computational fluid dynamics (CFD) simulation. validated experimental measurements. realizable K-? gave predictions relative deviation 3.8%. So, employed further parametric optimization rotor. results indicate reasonable improvement head efficiency new geometry four equidistant blades front, back flights 30 mm pitch. attributed favourable balance between losses guided uniform flow inside channels.