Results 31 to 40 of about 32,614 (207)

Effects of ultrasound on polymeric foam porosity [PDF]

, 2008
A variety of materials require functionally graded cellular microstructures whose porosity is engineered to meet specific applications (e.g. mimic bone structure for orthopaedic applications; fulfil mechanical, thermal or acoustic constraints in ...
Blitz, C. Torres-Sanchez, Cheeke, Cho, Floros, Font, Gallego-Juárez, J.R. Corney, Kalita, Kanthale, Leighton, Leighton, Masselin, Mulet, Peng, Pitt, Price, Price, Rojas, Taboas, van Tienen, Yakushin, Yan, Zhang   +23 more
core   +2 more sources

Acoustic surface cavitation [PDF]

, 2011
Merely the presence of compressible entities, known as bubbles, greatly enriches the physical phenomena encountered when introducing ultrasound in a liquid. Mediated by the response of these bubbles, the otherwise diffuse and relatively low energy density of the acoustic field can induce strong, localized liquid motion, high internal temperatures and ...
openaire   +1 more source

Experimental Comparative Investigations to Evaluate Cavitation Conditions within a Centrifugal Pump Based on Vibration and Acoustic Analyses Techniques

Archives of Acoustics, 2020
Cavitation is an essential problem that occurs in all kinds of pumps. This cavitation contributes highly towards the deterioration in the performance of the pump.
Ahmed Ramadhan AL-OBAIDI
doaj   +1 more source

Effects of medium viscoelasticity on bubble collapse strength of interacting polydisperse bubbles

Ultrasonics Sonochemistry, 2023
Due to its physical and/or chemical effects, acoustic cavitation plays a crucial role in various emerging applications ranging from advanced materials to biomedicine. The cavitation bubbles usually undergo oscillatory dynamics and violent collapse within
Dui Qin, Qingqin Zou, Xianhua Zhong, Bingyu Zhang, Zhangyong Li   +4 more
doaj   +1 more source

Breaking the Rayleigh-Plateau instability limit using thermocavitation within a droplet [PDF]

, 2013
We report on the generation of liquid columns that extend far beyond the traditional Rayleigh-Plateau instability onset. The columns are driven by the acoustic pressure wave emitted after bubble collapse.
Aguilar, G, Banks, N, Korneev, N, Padilla-Martinez, JP, Ramirez-San-Juan, JC, Ramos-Garcia, R   +5 more
core   +1 more source

Eulerian-Lagrangian method for simulation of cloud cavitation [PDF]

, 2017
We present a coupled Eulerian-Lagrangian method to simulate cloud cavitation in a compressible liquid. The method is designed to capture the strong, volumetric oscillations of each bubble and the bubble-scattered acoustics.
Colonius, Tim, Maeda, Kazuki
core   +3 more sources

Cavitation pressure in liquid helium [PDF]

, 2001
Recent experiments have suggested that, at low enough temperature, the homogeneous nucleation of bubbles occurs in liquid helium near the calculated spinodal limit. This was done in pure superfluid helium 4 and in pure normal liquid helium 3. However, in
B. M. Abraham, B. M. Abraham, C. E. Campbell, D. M. Jezek, F. Caupin, F. Caupin, F. Caupin, F. Dalfovo, G. H. Bauer, G. W. Waters, H. J. Maris, H. J. Maris, H. Lambaré, J. A. Nissen, J. Boronat, J. C. Wheatley, J. Casulleras, J. Wilks, K. Dransfeld, Lord Rayleigh, M. A. Solis, M. Guilleumas, M. Guilleumas, M. Kollar, M. P. Bertinat, P. Roche, S. Balibar, S. Balibar, S. Balibar, S. N. Burmistrov, W. H. Press, X. Chavanne   +31 more
core   +3 more sources

Exploring viscosity influence mechanisms on coating removal: Insights from single cavitation bubble behaviours in low-frequency ultrasonic settings

Ultrasonics Sonochemistry
The role of acoustic cavitation in various surface cleaning disciplines is important. However, the physical mechanisms underlying acoustic cavitation-induced surface cleansing are poorly understood.
Hao Wu, Yongzhen Jin, Yuanyuan Li, Hao Zheng, Xiaochen Lai, Jiaming Ma, Claus-Dieter Ohl, Haixia Yu, Dachao Li   +8 more
doaj   +1 more source

Experimental Investigation to Utilize Low-cost Sensors of Early Cavitation Prediction in Axial Pump Based on Acoustic and Vibration Approaches [PDF]

Journal of Applied Fluid Mechanics
Cavitation, defined by the formation and collapse of vapor bubbles in a liquid, presents a significant challenge to the reliable operation of axial pumps.
A. R. Al-Obaidi, J. Alhamid
doaj   +1 more source

Barrier-breaking effects of ultrasonic cavitation for drug delivery and biomarker release

Ultrasonics Sonochemistry, 2023
Recently, emerging evidence has demonstrated that cavitation actually creates important bidirectional channels on biological barriers for both intratumoral drug delivery and extratumoral biomarker release.
Yaxin Hu, Jianpeng Wei, Yuanyuan Shen, Siping Chen, Xin Chen   +4 more
doaj   +1 more source