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3-D Numerical Simulations of Flow Loss in Helical Channel

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Abstract

The flow loss of a helical channel Magnetohydrodynamic (MHD) thruster without MHD effect was numerically studied with 3-D simulations, and a flow loss coefficient ζ was defined to quantify the flow loss and its influencing factors were studied. The results show that ζ decreases in a first-order exponential manner with the pitch of a helical wall and the Reynolds number, and it declines slowly when and t/T > 0.2 and Re > 105, a flow guide makes the flow more smooth and uniform, especially in the flow guide and helical wall sub-regions and thus reduces the flow loss greatly, by about 30% with the averaged value of ζ from 0.0385 to 0.027, a rectifier weakens the helical flow and strengthens the axial one in the rectifier and outlet sub-regions, thus reduces the rotational kinetic pressure with the averaged value of ζ declining about 4% from 0.0385 to 0.037, and ζ decreases with a rectifier’s axial length when Re > 105.

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Authors and Affiliations

  1. Institute of Electrical Engineering, Chinese Academy of Sciences, Bei**g, 100190, China

    Ling-zhi Zhao, Yan Peng, Jian Li, Ran Li & Bao-lin Liu

  2. College of Computing and Communication Engineering, University of Chinese Academy of Sciences, Bei**g, 100049, China

    Ling-zhi Zhao

  3. China Ship Scientific Research Center, Wuxi, 214082, China

    Fang Lu

Authors
  1. Ling-zhi Zhao
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  2. Yan Peng
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  3. Fang Lu
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  4. Jian Li
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  5. Ran Li
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  6. Bao-lin Liu
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Corresponding author

Correspondence to Yan Peng.

Additional information

Biography: ZHAO Ling-zhi (1977-), Female, Manchu, Ph. D. Candidate, Senior Engineer

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Zhao, Lz., Peng, Y., Lu, F. et al. 3-D Numerical Simulations of Flow Loss in Helical Channel. J Hydrodyn 24, 858–863 (2012). https://doi.org/10.1016/S1001-6058(11)60313-2

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  • DOI: https://doi.org/10.1016/S1001-6058(11)60313-2

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