Study on the Gas-liquid Flow Characteristics in the Reversing Bucket of Water Jet Propulsion

Zhongyong Pan; Chunhai Cen; Ping Zong; Fall Ibra; Bo Yang

doi:10.5293/IJFMS.2020.13.2.455

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자료유형: 학술저널

저자정보: Zhongyong Pan (Jiangsu University) Chunhai Cen (Jiangsu University) Ping Zong (Jiangsu University) Fall Ibra (Jiangsu University) Bo Yang (Jiangsu University)

저널정보: 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.13 No.2

발행연도: 2020.6

수록면: 455 - 462 (8page)

DOI: 10.5293/IJFMS.2020.13.2.455

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To investigate the gas-liquid two-phase flow characteristics in the reversing bucket of water jet propulsion, the numerical simulations based on the Euler-Euler inhomogeneous model was conducted to the internal flow field of the reversing bucket under 1%~12% different inlet gas volume fractions (α). Based on that, the gas distribution, gas-liquid velocity streamlines and thrust changing were obtained to discuss the gas-liquid flow characteristics and the influence on the thrust of the reversing bucket. The calculation results show that the gas mainly distributes in the inner part of the reversing bucket flow passage under different inlet gas volume fractions. On the condition that the inlet gas volume fraction is more than 2%, the gas accumulation has occurred in the inlet section of the flow passage. With the increasing of inlet gas volume fraction, average velocity and pressure increase gradually at each cross-section of reversing bucket flow passage, and at the higher gas concentration in each cross-section, where the vortex will exist, indicating that the gas concentration has a great relationship with the vortex aggregation in the reversing bucket flow passage. When the inlet gas volume fraction is 7%, the thrust reaches the maximum. It shows that the appropriate gas can effectively improve the thrust efficiency of the reversing bucket.

#Reversing bucket #Euler-Euler model #Gas-liquid #Volume fraction #Thrust

참고문헌 (11)

참고문헌 신청

Yongyan Ni / 2017 / Thrust Characteristics and Nozzle Role of Water Jet Propulsion / International Journal of Fluid Machinery and Systems 10(1):47~53

Ni Y. Y. / 2013 / Research progress of pump water jet propulsion / Journal of Ship and Ocean Engineering 42(5):1~5

Marin K. / 2011 / Verification and validation study of URANS simulations for an axial water jet propelled large high-speed ship / Journal of Marine Science & Technology 16(4):434~447

Zidouni F. / 2015 / Simulation of gas–liquid flow in a helical static mixer / Journal of Chemical Engineering Science 137:476~486

Deendarlianto, Andrianto M. / 2016 / CFD Studies on the gas-liquid plug two-phase flow in a horizontal pipe / Journal of Petroleum Science and Engineering 147:779~787

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