Studies on the Characteristics of Axial-Flow Pumps : Part 4,Comparison between Theory and Experimental Results

概要

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In this paper, the values of some coefficients, which have been introduced in the theoretical analysis about the axial-flow pump performance shown in part 2 of this study, are determined by using the velocity distributions at the inlet and outlet from impeller blades obtained in part 3. These coefficients can be shown in comparatively simple forms, and an application of the theoretical solution to the actual problem becomes possible. In order to prove the accuracy of the theoretical solution, the flows before and behind the impeller blades and the theoretical head-flow characteristics of an axial-flow pump with impeller blades designed by the modified aerofoil theory are calculated by using these coefficients. The results coincide considerably well with the experimental ones.
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