Evaluation of the hydraulic institute method for viscous corrections in a centrifugal pump through CFD modelling

En este artículo se discutirá la evaluación del método del HI para correcciones por viscosidad en bombas centrífugas por medio de CFD. Se construyó un modelo en CFD en STAR-CCM+ para una bomba centrífuga desarrollada por Clyde Union Pumps (Ref. RP1A26), obteniendo una malla conformada por 1238568 celdas. Se testeó la independencia del mallado (+/- 30% en el control de tamaño base) con el fin de verificar si la malla es confiable y adecuada para el estudio, concluyendo que la malla base se considera como adecuada. Posteriormente, el modelo de CFD fue validado con las curvas de desempeño suministradas por el fabricante; la incertidumbre de la simulación para la cabeza, la eficiencia y la potencia hidráulica se fijaron en 3%, 7% y 10% respectivamente. Se aplicó el método del HI (Hydraulic Institute) bajo 4 escenarios (diferentes viscosidades), obteniendo las curvas de desempeño corregidas. Finalmente, se simularon las curvas de desempeño para cada escenario mediante el modelo de CFD...

In this paper, the evaluation of the HI method for viscous corrections in centrifugal pumps trough CFD will be discussed. CFD model was constructed on STAR-CCM+ for a centrifugal pump manufactured by Clyde Union Pumps (Ref. RP1A26), obtaining a mesh conformed by 1238568 cells. Mesh independence was tested (+/- 30% on base size control) to verify if the mesh was accurate and reliable, concluding that the base mesh is considered as trustworthy and reliable for the study. Following, the CFD model was validated with performance data supplied by the manufacturer; simulated total head uncertainty, efficiency uncertainty, and hydraulic power uncertainty were defined at 3%, 10%, and 7%, respectively. Hydraulic Institute (HI) method was applied based on the supplied data under four different scenarios (different viscosities), obtaining the corrected performance curves. Finally, simulated performance curves were obtained for each scenario through CFD model. Results showed that performance parameters behave according to the theory by the HI method and the CFD model...

Ingeniero Químico

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