Abstract
In this paper, the gas-liquid flow is comprehensively analyzed under different inlet gas void fractions, and the effect of tip leakage vortex (TLV) on the gas flow pattern in multiphase pumps is revealed. The results show that the gas flow pattern in an impeller is closely related to the centrifugal force, low-pressure region, and vortex motion. Most gas is present near the hub and suction surface of the blade as well as in the TLV. The two- and three-dimensional spatiotemporal evolution of the gas is presented, and the gas motion during the inception, development, and dissipation of TLV is revealed. It is reflected that the gas volume fraction is the highest at the TLV core and gradually weakens along the radial direction with the vortex core at the center. Additionally, the TLV energy dissipation is closely related to the gas and pressure difference, and strong energy dissipation occurs in the jet-wake flow.
Funder
National Science and Technology Major Project of China
National Natural Science Foundation of China
the Open Research Fund Program of State Key Laboratory of Hydroscience and Engineering
Key scientific research fund of Xihua University of China
Central Leading Place Scientific and Technological Development Funds for Surface Project
National Key Research and Development Program
Subject
Ocean Engineering,Water Science and Technology,Civil and Structural Engineering
Cited by
10 articles.
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