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Volume 27 Issue 1
 
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Article Navigation >  Journal of Unmanned Undersea Systems  > 2019  >  27(1): 020-24
WANG Rui, DANG Jian-Jun, YAO Zhong. Experimental Study on Supercavitation Characteristics around Axisymmetric Body with Different Shape Cavitators[J]. Journal of Unmanned Undersea Systems, 2019, 27(1): 020-24. doi: 10.11993/j.issn.2096-3920.2019.01.004
Citation: WANG Rui, DANG Jian-Jun, YAO Zhong. Experimental Study on Supercavitation Characteristics around Axisymmetric Body with Different Shape Cavitators[J]. Journal of Unmanned Undersea Systems, 2019, 27(1): 020-24. doi: 10.11993/j.issn.2096-3920.2019.01.004
shu

Experimental Study on Supercavitation Characteristics around Axisymmetric Body with Different Shape Cavitators

doi: 10.11993/j.issn.2096-3920.2019.01.004
  • 1.

    School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China

  • 2.

    Northwest Institute of Mechanical & Electrical Engineering, Xianyang 712099, China

  • Received Date: 2018-08-22
  • Rev Recd Date: 2018-09-12
  • Publish Date: 2019-02-28
    Abstract
  • To obtain the influence of head-shaped cavitator parameters on the characteristics of supercavitation flow field, the high-speed flow display technology and the force measuring technology with three-point force balance are employed to study the effect of cavitator with different shapes on the supercavitation characteristics of axisymmetric body on the high-speed water tunnel test platform. Supercavitation flows around the axisymmetric body are generated via artificial ventilation by the cavitators with four shapes. The cavity morphology and resistance fluctuation around the axisymmetric body under different working conditions are obtained. Results show that each cavitator can form stable and transparent cavity. For the cavitator with a certain shape, the higher the velocity of incoming flow is, the larger the cavity size becomes. According to the drag coefficient, the descending order is the concave-shaped cavitator, the truncated cone-shaped cavitator, the disk-shaped cavitator, and the inverted cone-shaped cavitator. This research may provide a reference for the head shape design of supercavitating projectile and the design of hydrodynamic layout.

     

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