In this study, the weakly nonlinear propagation of plane progressive pressure waves in an
initially quiescent liquid was theoretically investigated. This liquid contains several small …

Encapsulated microbubbles are empty, micrometer-sized, spherical bubbles, typically
micron which are used in many applications as lipid-shells in soft tissues. Here, this paper …

The small-amplitude damped oscillations of a gas-filled spherical bubble surrounded by a
viscous liquid is studied analytically using a symbolically computable version of the two-time …

Gas kick is a common and high-risk drilling trouble in geo-energy engineering, especially for
deep-water drilling and ultra-deep well drilling. The most favorable way of early detection of …

A gas kick in deep-water drilling can reduce drilling fluid density, potentially causing a
blowout that endangers offshore workers. Acoustic monitoring techniques (AMT) based on …

Wet steam widely exists in thermal power plants, nuclear power plants and other power
engineering. The accurate measurement of steam wetness is very important for the safety …

Propagation speed of acoustic waves in liquid can be significantly degraded when gas
bubbles exist. To reveal the influence of gas bubbles on propagation characteristics of …

Compound axial and torsional impact (CATI) has been widely considered as a highly
efficient assistant drilling technology. However, the rock-breaking mechanism of CATI is still …

This paper dedicated to my late mum and dad (Ludwika and Karol Wiercigroch), presents a
light-hearted account of important events in my academic career, which have influenced my …

This paper discusses the acoustic mitigation properties of an air–water mixture excited by a
monopole source. The numerical study reproduces a flat plate immersed in water and …