September 10, 2025EnergiesOpen Access

Study on the Gas–Liquid Two-Flow Characteristics Inside a Three-Stage Centrifugal Pump

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Pump efficiency decreases as the inlet gas content rate increases, with a 5% drop observed.
The head of the pump also reduces when gas content rises from 0% to 5%, showing a 3% decrease.
Pressure pulsations within the pump flow channel diminish with increased gas content.
Bubble coverage on impeller blades intensifies as gas content reaches 5%, potentially affecting performance.

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Numerical simulation reveals the impact of inlet gas content on pump efficiency in multistage systems.

Zhang et al. (2025) studied this question.

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