Abstract We discuss the interaction of strongly nonlinear fluid motion induced by collapse a vapor microbubble over planar surface and elastic dynamics underlying solid. The is described using an extension Navier-Stokes equations endowed with distributed capillary stresses in context diffuse interface approach. bubble triggered overpressure liquid leads to intense jet that pierces bubble, chang...

Material deformation and pitting from cavitation bubble collapse is investigated using fluid and material dynamics and their interaction. In the fluid, a novel hybrid approach, which links a boundary element method and a compressible finite difference method, is used to capture non-spherical bubble dynamics and resulting liquid pressures efficiently and accurately. The bubble dynamics is intima...

o the best of our knowledge, no studies have been reported that evaluated the stability of ultrasound contrast agents (UCAs) over time once the vial was opened. Indeed, air injected into the vial via a syringe might interact with the UCAs and degrade them, potentially modifying their physical characteristics. In a clinical context, for example, for diagnosis, therapy, or bioeffect studies, the ...

We quantify uncertainties in the location and magnitude of extreme pressure spots revealed from large scale multi-phase flow simulations of cloud cavitation collapse. We examine clouds containing 500 cavities and quantify uncertainties related to their initial spatial arrangement. The resulting 2000-dimensional space is sampled using a non-intrusive and computationally efficient Multi-Level Mon...

Resistance to xylem cavitation depends on the size of xylem pit membrane pores and the strength of vessels to resist collapse or, in the case of freezing-induced cavitation, conduit diameter. Altering these traits may impact plant biomechanics or water transport efficiency. The evergreen sclerophyllous shrub species, collectively referred to as chaparral, which dominate much of the mediterranea...

Cavitation often occurs in therapeutic applications of medical ultrasound such as shock-wave lithotripsy (SWL) and high-intensity focused ultrasound (HIFU). Because cavitation bubbles can affect an intended treatment, it is important to understand the dynamics of bubbles in this context. The relevant context includes very high acoustic pressures and frequencies as well as elevated temperatures....

High intensity ultrasound can be used for the production of novel materials and provides an unusual route to known materials without bulk high temperatures, high pressures, or long reaction times. Several phenomena are responsible for sonochemistry and specifically the production or modification of nanomaterials during ultrasonic irradiation. The most notable effects are consequences of acousti...

The luminescence from single laser produced cavitation bubbles for varying degrees of asphericity is investigated temporally, spatially, and spectrally. The degree of asphericity is controlled with an adjustable rigid boundary near the bubble. Temporally, single and multiple light emission events happen during a time interval of 80 ns. The luminescence duration increases with increasing aspheri...

This paper demonstrates membrane poration of a single suspension cell due to a fast liquid microjet. The jet is formed during the collapse of a laser induced bubble created at a variable stand-off distance from the target cell. The cell is trapped by a converging structure within a microfluidic chip. The asymmetrical growth and collapse of the cavitation bubble next to the cell lead to the micr...

Cavitation generation methods have been applied in multifarious directions due to their diversity. And scholars carried out numerous researches and discussions on cavitation methods. The purpose of this study is explore the generating mechanism evolution law volumetric alternate (VAC). In VAC, liquid water placed an airtight container with variable volume. With volume alternately changes, insid...