The use of self-resonating cavitating water jets for underwater sound generation

Chahine, Georges L.; Johnson, V. E.; Lindenmuth, William T.; Frederick, G.S.

doi:10.1121/1.392274

Cited by 21 publications

(13 citation statements)

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“…In the design of the organ-pipe nozzles, the preferred Strouhal number was 0.3 and the model number was 0.25, which have been determined and used in previous related research [10][11][12][13] . The inlet diameter was 13 mm and the chamber diameter was 5mm, which were determined from the "Organ-pipe Nozzle Design Manual" established by LI, et al [31] .…”

Section: Experimental Setup and Proceduresmentioning

confidence: 99%

“…And SRCW was then experimentally shown to be able to successfully augment the cutting action of mechanical bits. Specifically, SRCW can efficiently take advantage of the nature tendency of an axisymmetric jet to organize into large structures and subsequently leads to large and periodical pressure fluctuations as well as intensified cavitation in the jet [12] . Since the first proposal of SRCW, a considerable number of efforts have been made to improve the performance of the jet.…”

Section: Introduction mentioning

confidence: 99%

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Effects of area discontinuity at nozzle inlet on the characteristics of self-resonating cavitating waterjet

Kang

Ding

et al. 2016

Chin. J. Mech. Eng.

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The current research on self-resonating cavitating waterjet(SRCW) mainly focuses on the generation mechanism and structure optimization. Researches relating to the influences of disturbances at nozzle inlet on the characteristics of the jet are rarely available. In order to further improve the performance of SRCW, effects of area discontinuity(enlargement and contraction) are experimentally investigated using three organ-pipe nozzles. Axial pressure oscillation peak and amplitude as well as aggressive erosion intensity of the jet are used to evaluate the effects. The results reveal that area enlargement and contraction affect the peak differently, depending on the inlet pressure, nozzle geometry, and standoff distance; while area contraction always improves the amplitude regardless of these factors. At inlet pressures of 10 MPa and 20 MPa, area discontinuity improves the peak at almost all the testing standoff distances, while this only happens at smaller standoff distances with the inlet pressure increased to 30 MPa. The capability of area discontinuity for improving the amplitude is enhancing with increasing inlet pressure. Moreover, the cavitation erosion ability of the jet can be largely enhanced around the optimum standoff distance, depending on the type of area discontinuity and nozzle geometry. A preliminary analysis of the influence of area discontinuity on the disturbance waves in the flow is also performed. The proposed research provides a new method for effectively enhancing the performance of SRCW.

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Section: Experimental Setup and Proceduresmentioning

confidence: 99%

Section: Introduction mentioning

confidence: 99%

Effects of area discontinuity at nozzle inlet on the characteristics of self-resonating cavitating waterjet

Kang

Ding

et al. 2016

Chin. J. Mech. Eng.

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“…It also has one transparent side wall for observations. The self-resonating cavitation nozzle 1 in Figure 2 is supplied by DYNAFLOW, Inc. (Jessup, MD) (Johnson and Lindenmuth, 1983;Chahine et al, 1984). The nozzle is designed to produce most efficient cavitation while operating at the pressure of 551.6 kPa and the flow rate of 0.003218 m 3 /sec.…”

Section: Experimental Setup and Equipmentmentioning

confidence: 99%

Investigation of Cavitating Jet Effect on Bitumen Separation from Oil Sands

Bukharin¹,

Vinogradov²,

Hugo³

2012

Petroleum Science and Technology

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The effect of a submerged cavitating jet on as-mined oil sands is investigated in order to assess the potential of this new technological approach to bitumen extraction at low temperatures. A series of laboratory experiments have been performed using a custom-made experimental apparatus that allowed ablation measurements of oil sands samples and provided information regarding the volume of the extracted bitumen, the remaining volume of cleaned sand, the effects of the water temperature, and the time of exposure of the sample to a cavitating jet. A comparison of the results for cavitating and noncavitating jets is provided.

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“…The abrasive water jet has so many merits such as no heat deformation, high machining efficiency, high accuracy, and broad machining range. In order to improve the capability of the water jet machining, the pulsed water jet, which could cause a greater removal of target material by generating water-hammer effect, has been a research focus [3][4][5]. With an aim to produce high speed pulsed water jets, the mechanical methods including rotation, reciprocating, and wobbling have been successfully applied.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Material Removal of the Ultrasonic Vibration Assisted Abrasive Water Jet Machining Ceramics

Wang

Hou

2017

Advances in Materials Science and Engineering

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The ultrasonic vibration activated in the abrasive water jet nozzle is used to enhance the capability of the abrasive water jet machinery. The experiment devices of the ultrasonic vibration assisted abrasive water jet are established; they are composed of the ultrasonic vibration producing device, the abrasive supplying device, the abrasive water jet nozzle, the water jet intensifier pump, and so on. And the effect of process parameters such as the vibration amplitude, the system working pressure, the stand-off, and the abrasive diameter on the ceramics material removal is studied. The experimental result indicates that the depth and the volume removal are increased when the ultrasonic vibration is added on abrasive water jet. With the increase of vibration amplitude, the depth and the volume of material removal are also increased. The other parameters of the ultrasonic vibration assisted abrasive water jet also have an important role in the improvement of ceramic material erosion efficiency.

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The use of self-resonating cavitating water jets for underwater sound generation

Cited by 21 publications

References 0 publications

Effects of area discontinuity at nozzle inlet on the characteristics of self-resonating cavitating waterjet

Effects of area discontinuity at nozzle inlet on the characteristics of self-resonating cavitating waterjet

Investigation of Cavitating Jet Effect on Bitumen Separation from Oil Sands

Experimental Investigation on the Material Removal of the Ultrasonic Vibration Assisted Abrasive Water Jet Machining Ceramics

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