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Numerical Simulation Study of Nozzle Structure of Liquid-Gas Ejector

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Abstract

The nozzle structure parameters of a liquid-gas ejector have an important effect on the performance of the ejector. In this paper, a numerical simulation model of a liquid-gas ejector was developed. To optimize the gas induction and mixing performance of the ejector, the effect of the nozzle structure on the flow mixing characteristics inside the liquid-gas ejector is investigated. The rationality of the numerical simulation was verified by using the experimental equipment, and the maximum relative error between the experimental and simulated data was 9.72%, which proved the reliability of the numerical simulation. The results show that: conical, folded line, and arc-shaped three different shapes of the nozzle, which the conical nozzle has the best ability to induct gas. The injection coefficient will decrease gradually with the increase of nozzle length, and the injection coefficient will increase with the increase of nozzle outlet straight section length, etc. The research results of this paper can be used to improve the gas induction and mixing performance of the liquid-gas ejector, and play an important guiding role in the design optimization of the ejector.

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ACKNOWLEDGMENTS

This work was supported by a grant from the Natural Science Foundation of Shandong Province (Grant no. ZR2020MB122), Shandong Province Taishan Scholar engineering under special funding Foundations, and the Tackling Key Program of Science and Technology in Shandong Province (no. 2019GSF109009).

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Authors and Affiliations

  1. College of Electromechanical Engineering, Qingdao University of Science and Technology, Shandong Province, 266061, Qingdao, China

    Z. Y. Duan, L. F. Peng, T. L. Liu & S. Li

  2. College of Chemical Engineering, Qingdao University of Science and Technology, Shandong Province, 266042, Qingdao, China

    J. M. Zhang

  3. CNPC EastChina Design Institute Co., Ltd., 266071, Qingdao, China

    D. L. Zhu

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  1. Z. Y. Duan
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  2. L. F. Peng
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Correspondence to J. M. Zhang.

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Duan, Z.Y., Peng, L.F., Liu, T.L. et al. Numerical Simulation Study of Nozzle Structure of Liquid-Gas Ejector. Theor Found Chem Eng 56, 1204–1214 (2022). https://doi.org/10.1134/S004057952233003X

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  • DOI: https://doi.org/10.1134/S004057952233003X

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