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Chinese Journal of High Pressure Physics  > 2012  >  26(5): 590-594.
LIAO Hua-Lin, NIU Ji-Lei, YI Can. Erosion Characteristics and Mechanisms of Cavitating Abrasive Water Jet under Confining Pressure[J]. Chinese Journal of High Pressure Physics, 2012, 26(5): 590-594. doi: 10.11858/gywlxb.2012.05.017
Citation: LIAO Hua-Lin, NIU Ji-Lei, YI Can. Erosion Characteristics and Mechanisms of Cavitating Abrasive Water Jet under Confining Pressure[J]. Chinese Journal of High Pressure Physics, 2012, 26(5): 590-594. doi: 10.11858/gywlxb.2012.05.017
shu

Erosion Characteristics and Mechanisms of Cavitating Abrasive Water Jet under Confining Pressure

doi: 10.11858/gywlxb.2012.05.017
  • 1.

    College of Petroleum Engineering, China University of Petroleum, Qingdao 266580, China;

  • 2.

    State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China

  • Received Date: 28 Jan 2011
  • Rev Recd Date: 10 Apr 2011
  • Issue Publish Date: 15 Oct 2012
    Abstract
  • Abrasive water jet is widely used in water resources and architectural engineering, oil and gas engineering and marine resources development. It is significant to study the erosion characteristics of the jet and material destruction mechanisms to improve the efficiency of water jet. Using the self-developed device, the experiments were performed on abrasive water jet erosion characteristics formed by three types of nozzles including self-oscillating cavitation nozzle, Venturi nozzle, and cone-shaped nozzle under confining pressure. Destruction mechanisms of metal material were also analyzed. The results show that the erosion efficiencies of the self-oscillating cavitation nozzle and Venturi nozzle are higher than that of the cone-shaped nozzle; cavitation erosion can help improve the efficiency of abrasive water jet. Abrasive water jet erosion efficiency decreases with the confining pressure increasing, mainly due to the confining pressure inhibiting pressure pulse, cavitation effect, and impinging pressure. The mechanism of materials by cavitating abrasive water jet includes three roles of impact erosion, cavitation and their synergism.

     

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