Further Evaluation of the Modified Affinity Laws for the Prediction of Viscosity Effect on the Pump Head Performance
Conference Paper
Overview
Overview
abstract
A method is presented that predicts a pumps performance for different viscosity fluids. It is a unique combination of the affinity law blended with energy loss phenomenon. Presented correlations are based on the limited data available. Although the method has a scientific base, it requires further validation and refinement to cover different pump types over a wide range of operating conditions. The current study has focused on validating the applicability of the modified affinity Laws on newly acquired data and understanding the effect of impeller size on the predictions using the CFD simulations. The simulations were performed for 4 and 8 sizes of geometrically similar pumps for varying viscosities and rotational speeds. The modified affinity law provides consistent results using the Morrison number which varies with the flow regime and pump specific speed.
