Results 1 to 10 of about 244 (131)
Journal of Marine Science and Engineering, 2022 The S-shaped hydrofoil is often used in the design of reversible machinery due to its centrally symmetrical camber line. The objective of this paper is to study the influence of cloud cavitation on the flow structure and the unsteady characteristics of ...
Haiyu Liu +3 more
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Similarity Law on Shedding Frequency of Cavitation Cloud Induced by a Cavitating Jet
Journal of Fluid Science and Technology, 2012 In order to clarify the mechanism of cavitation cloud shedding, the shedding frequencies of cavitation clouds were investigated by high-speed observations and image analysis. The results indicate that the shedding frequency follows the similarity law for
Satoshi NISHIMURA +2 more
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Shedding of Cavitation Clouds in an Orifice Nozzle
FluidsFocused on the unsteady property of a cavitating water jet issuing from an orifice nozzle in a submerged condition, this paper presents a fundamental investigation of the periodicity of cloud shedding and the mechanism of cavitation cloud formation and ...
Taihei Onishi +3 more
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Bubble cloud-mediated cavitation for tumor mechanical ablation and effector immune cell deployment
Ultrasonics SonochemistryHistotripsy is a cavitation-based tumor ablation technology. To achieve precise cavitation-based ablation requires investigating the cavitation behavior of the bubble cloud and their impact on tumor tissue.
Jing Cao +8 more
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Surface tension and quasi-emulsion of cavitation bubble cloud
Ultrasonics Sonochemistry, 2017 A quasi-emulsion phenomenon of cavitation structure in a thin liquid layer (the thin liquid layer is trapped between a radiating surface and a hard reflector) is investigated experimentally with high-speed photography. The transformation from cloud-in-water (c/w) emulsion to water-in-cloud (w/c) emulsion is related to the increase of cavitation bubble ...
Lixin Bai, Weilin Xu, Pengfei Wu
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Frontiers in Energy Research, 2021 In order to study the energy loss of bi-directional hydraulic machinery under cavitation conditions, this paper uses high-speed photography combined with six-axis force and torque sensors to collect cavitating flow images and lift signals of S-shaped ...
Haiyu Liu +5 more
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Research on Cavitation Characteristics of Two-Throat Nozzle Submerged Jet
Applied Sciences, 2022 Ship fouling not only increases ship resistance and fuel consumption but is equally a type of biological invasion, which causes severe ecological damage. Submerged cavitation jet cleaning is an environmentally friendly, high-efficiency, and energy-saving
Jingming Dong +4 more
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CLOUD CAVITATION DYNAMICS [PDF]
The ANZIAM Journal, 2008 AbstractAn analysis is developed for the behaviour of a cloud of cavitation bubbles during both the growth and collapse phases. The theory is based on a multipole method exploiting a modified variational principle developed by Miles [“Nonlinear surface waves in closed basins”, J. Fluid Mech.75 (1976) 418–448] for water waves.
Wilson, Miles +2 more
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AIP Advances, 2021 The cloud-cavitation shedding mechanism was numerically investigated around the NACA 0015 hydrofoil of α = 7° and σ = 0.7, 0.67 under the identical computational conditions as in Paper I [W. Jin, AIP Adv. 11, 065028 (2021)].
Weiwei Jin
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Numerical Study on the Vibration and Noise Characteristics of a Delft Twist11 Hydrofoil
Journal of Marine Science and Engineering, 2021 Underwater radiated noise (URN) is greatly increasing due to an increase in commercial shipping, sonar activities, and climate change. As a result, marine life is having difficulty communicating, and marine ecosystem disturbances are occurring. The noise
Hong-Sik Hwang +3 more
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