Journal of Shandong University(Engineering Science) ›› 2026, Vol. 56 ›› Issue (3): 187-192.doi: 10.6040/j.issn.1672-3961.0.2024.314

• Mechanical, Energy and Power Engineering • Previous Articles     Next Articles

Multi-objective optimization design of gas-liquid two-phase centrifugal pump parameters

ZHOU Mingxu1,2,3, HU Youcai1,2,3, WANG Yanwei1,2,3*   

  1. ZHOU Mingxu1, 2, 3, HU Youcai1, 2, 3, WANG Yanwei1, 2, 3*(1. College of Mechanical and Electrical Engineering, Wuhan Institute of Technology, Wuhan 430205, Hubei, China;
    2. Chemical Equipment Reinforcement and Inherent Safety Key Laboratory of Hubei Province, Wuhan Institate of Technology, Wuhan 430205, Hubei, China;
    3. Hubei Green Chemical Equipment Engineering Technology Research Center, Wuhan 430205, Hubei, China
  • Published:2026-06-09

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Abstract: Under the condition of gas-liquid two-phase, the high-speed centrifugal pump of model Q5H26 was studied to improve its head and efficiency. After the three-dimensional solid modeling of the main components of the centrifugal pump, the feasibility of the numerical simulation was verified by experiments. For the condition of 10% gas content, the sensitivity analysis of impeller parameters of centrifugal pump was carried out based on multi-objective programming model, and the optimization design was carried out by genetic algorithm. The optimized model was numerically simulated, and the operating efficiency and head of centrifugal pump before and after optimization were calculated and compared to evaluate the optimization effect. When the gas content was 10%, the four key structural parameters of impeller outlet width, impeller diameter, blade trailing edge outlet angle and impeller inlet diameter significantly affected the performance of the pump. Under the rated condition, when the air content was 10%, the efficiency of the model pump designed by optimizing the impeller structure parameters was increased by 11.2% and the head was increased by 1.45 m. In this way, the stability and reliability of high-speed centrifugal pumps in dealing with liquids containing gas were enhanced.

Key words: gas-liquid two-phase, centrifugal pump, multi-objective programming model, multi-objective optimization, genetic algorithm

CLC Number: 

  • TH311
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