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Scholars Journal of Engineering and Technology | Volume-3 | Issue-01
Variable Rotational Speed Influence to Internal Flow Field of Electric Submersible Pump with CFD
Hui-bin GU, Ye YUAN, Huan-huan DING
Published: Jan. 30, 2015 |
116
95
DOI: 10.36347/sjet
Pages: 76-79
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Abstract
To study the impact of variable speed operation to electric submersible pump internal flow field, the fluid
dynamics numerical simulation for impeller passages is accomplished under five kinds of rotational speed. The results
show that: with the rotational speed increased, the fluid static pressure is gradually increased from inlet to outlet of
impeller flow passages. The impeller flow passages internal fluid flows to the periphery under the action of centrifugal
force, so impeller center pressure decreased. When the fluid just flows into the flow passages, the relative velocity is
small, the fluid relative velocity along radial direction of the impeller is gradually increased, reaching the maximum at
impeller outlet, and the outlet flow velocity is also increased with the increased rotational speed. The revealed of the
impact of variable speed operation on electric submersible pump internal flow rule, and provides theoretical basis for
pump retrofit optimal design.