Variable Rotational Speed Influence to Internal Flow Field of Electric Submersible Pump with CFD
Journal Title: Scholars Journal of Engineering and Technology - Year 2015, Vol 3, Issue 1
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. Keywords: Electric Submersible Pump, Rotate Speed, Internal Flow Field, Impeller.
Authors and Affiliations
Hui-bin GU, Ye YUAN, Huan-huan DING
Keywords
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