 Experimental investigation of floor-attached vortex effects on the pressure pulsation at the bottom of the axial flow pump sumpXijie Song and Chao Liu Renewable Energy, 2020, vol. 145, issue C, 2327-2336 Abstract: The influence of the floor-attached vortex on the pressure pulsation at the pump sump was investigated using the experimental analysis, and the theoretical analysis according to the theory of eddy dynamics. When the floor-attached vortex appeared under the large flow rate conditions, the time-domain characteristics curves for the pressure pulsation were significantly disordered and the pressure pulsation amplitudes at different points with floor-attached vortex varied significantly. The position of the vortex was consistent with the position of the low-pressure area at the floor of the pump sump and a large pressure gradient existed at the vortex appearing area. Through the theoretical and experimental analysis, it was found that the pressure pulsation induced by the floor-attached vortex fluctuates periodically with time, and the shape of the pressure pulsation curve is approximately the cosine functional curve. Keywords: axial flow pump; Experimental investigation; Floor-attached vortex; Pressure distribution; Pressure pulsation; Theoretical analysis (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:145:y:2020:i:c:p:2327-2336 DOI: 10.1016/j.renene.2019.07.125 Access Statistics for this article Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides More articles in Renewable Energy from Elsevier |
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