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Design Optimization of a Diffuser Pump Stage by 4 points in Efficiency

	Posted Tue September 25, 2018 @09:26AM
	In this project, the client asked ADT to perform a hydrodynamic design optimization of a strongly interacting diffuser pump stage using the inverse design code TURBOdesign1. The focus of the design was to minimize the hydrodynamic loss generation, particularly in the diffuser channels.

	The project was divided into several tasks. Initially, a detailed flow analysis of the existing pump diffuser was performed. Due to the strong interaction between the impeller and the diffuser blade rows, ADT performed a full stage unsteady flow analysis in order to understand the flow structure and loss generation mechanism in the machine. Based on the analysis study, the majority of loss generation occurred in the diffuser channel. A redesign of the impeller blades was performed using TURBOdesign1 to minimize the secondary flow losses in the impeller and reach an uniform flow condition at the impeller exit and diffuser inlet. Unsteady flow analysis confirmed that the new impeller had a higher efficiency and also resulted in more circumstantially and axially uniform exit flow distribution. Read the article in full

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