Publication
Vapor compression and energy dissipation in a collapsing laser-induced bubble
Related publications (46)
Methodology for efficient use of thermal energy in the chemical and petrochemical industry
The current European energy regulation, aligned with the European Union energy strategy and targets for the next decade, requires large industrial companies to regularly assess their energy performance and implement energy efficiency improvement measures. ...
EPFL2018Rebounds of deformed cavitation bubbles
Mohamed Farhat, Danail Obreschkow, Outi Supponen
Presented here are experiments clarifying how the deformation of cavitation bubbles affects their rebound. Rebound bubbles carry the remaining energy of a bubble following its initial collapse, which dissipates energy mainly through shock waves, jets, and ...
AMER PHYSICAL SOC2018Collapse phenomena of deformed cavitation bubbles
Cavitation bubbles are a topic of long-standing interest owing to the powerful phenomena associated with their collapse. Their unique ability to focus energy typically causes damage in hydraulic machinery (turbines, pumps, propellers, ...) but, if managed ...
EPFL2017Shock waves from nonspherical cavitation bubbles
Mohamed Farhat, Nicolas Dorsaz, Danail Obreschkow, Philipp Kobel, Outi Supponen, Marc Tinguely
We present detailed observations of the shock waves emitted at the collapse of single cavitation bubbles using simultaneous time-resolved shadowgraphy and hydrophone pressure measurements. The geometry of the bubbles is systematically varied from spherical ...
Amer Physical Soc2017Constant-pressure nested sampling with atomistic dynamics
The nested sampling algorithm has been shown to be a general method for calculating the pressure-temperature-composition phase diagrams of materials. While the previous implementation used single-particle Monte Carlo moves, these are inefficient for conden ...
Amer Physical Soc2017Luminescence from cavitation bubbles deformed in uniform pressure gradients
Mohamed Farhat, Danail Obreschkow, Philipp Kobel, Outi Supponen
Presented here are observations that demonstrate how the deformation of millimetric cavitation bubbles by a uniform pressure gradient quenches single-collapse luminescence. Our innovative measurement system captures a broad luminescence spectrum (wavelengt ...
2017RANS computations for identification of 1-D cavitation model parameters: application to full load cavitation vortex rope
François Avellan, Christophe Nicolet, Andres Müller, Sébastien Alligné
Due to the massive penetration of alternative renewable energies, hydropower is a key energy conversion technology for stabilizing the electrical power network by using hydraulic machines at off design operating conditions. At full load, the axisymmetric c ...
International Association For Hydraulic Research20163D ALE Finite-Element Method for Two-Phase Flows With Phase Change
John Richard Thome, Navid Borhani, Gustavo Rabello Dos Anjos
We seek to study numerically two-phase flow phenomena with phase change through the finite-element method (FEM) and the arbitrary Lagrangian-Eulerian (ALE) framework. This method is based on the so-called one-fluid formulation; thus, only one set of equati ...
Taylor & Francis2014Low-temperature Collisions between Neutral Molecules in Merged Molecular Beams
Andreas Osterwalder, Justinas Jankunas, Benjamin Bertsche
We have developed an experiment for the investigation of neutral molecular collisions in the gas phase at temperatures as low as 100 mK. These low temperatures are obtained by merging two supersonic expansions, using an electric and a magnetic guide, and b ...
Schweizerische Chemische Gesellschaft2014Energy integration optimisation of chilled ammonia process for CO2 capture
François Maréchal, Laurence Tock
Within the global challenge of climate change mitigation, CO2 capture and storage is regarded as a potential option to reduce the CO2 emissions in power plants. The most common technology to capture CO2 is chemical absorption with amines, requiring however ...
2013