Publications related to Lubrication

A mechanistic understanding of the wear coefficient: From single to multiple asperities contact

Jean-François Molinari, Ramin Aghababaei, Lucas Henri Galilée Frérot

Sliding contact between solids leads to material detaching from their surfaces in the form of debris particles, a process known as wear. According to the well-known Archard wear model, the wear volume (i.e. the volume of detached particles) is proportional ...

2018

Frictional Heating Processes and Energy Budget During Laboratory Earthquakes

François Xavier Thibault Passelègue

During an earthquake, part of the released elastic strain energy is dissipated within the slip zone by frictional and fracturing processes, the rest being radiated away via elastic waves. While frictional heating plays a key role in the energy budget of ea ...

2018

Effect of fluid viscosity on fault frictional behaviour

Marie Estelle Solange Violay, Chiara Cornelio

Understanding fluids viscosity effects on fault dynamics can shed light on the induced seismicity in engineering reservoirs where fluids with viscosity ranking from 1mPa s-1 to 1000 mPa s-1 are also injected during hydraulic fracturing process in order to ...

2017

Tip asymptotic of a hydraulic fracture driven by a power law fluid accounting for the presence of a fluid lag

Brice Tanguy Alphonse Lecampion, Fatima-Ezzahra Moukhtari

We investigate the tip region of a hydraulic fracture driven by a power law fluid propagating at a constant velocity in an impermeable linear elastic isotropic medium. We account for the presence of a fluid lag of a priori unknown length at the tip of the ...

2017

Modeling of the propagation of hydraulic fracture using cohesive zone models

Brice Tanguy Alphonse Lecampion, Dong Liu, Lorenzo Benedetti

Hydraulic fracturing (HF) is widely used in the oil and gas industry to enhance production from tight reservoirs. The process involves the injection of fluid at a given flow rate into a wellbore in order to propagate a fracture in rocks and thus increase t ...

2017

Normal adhesive contact on rough surfaces: efficient algorithm for FFT-based BEM resolution

Jean-François Molinari, Guillaume Anciaux, Valentine Ginette Madeleine Rey

We introduce a numerical methodology to compute the solution of an adhesive normal contact problem on rough surfaces with the Boundary Element Method. Based on the Fast Fourier Transform and the Westergaard’s fundamental solution, the proposed algorithm en ...

2017

Micromechanical Origins of Adhesive Wear Mechanisms: From Asperity Smoothing to Debris Creation

Jean-François Molinari, Ramin Aghababaei, Derek Warner

The adhesive wear process consists of several physical phenomena including plasticity and fracture which occur at different length and time scales. Despite the critical importance of the adhesive wear process in all engineering applications, it is still de ...

2017

The dam-break problem for eroding viscoplastic fluids.

Christophe Ancey, Belinda Margaret Bates

Natural gravity-driven flows can increase in volume by eroding the bed on which they descend. This process is called basal entrainment and is thought to play a key role in the bulk dynamics of geophysical flows. Although its study is difficult using field ...

Elsevier2017

Turbocompressors for Domestic Heat Pumps – A Critical Review

Jürg Alexander Schiffmann, Jean-Baptiste Carré

Small-scale, oil-free radial compressors on gas lubricated bearings represent a promising alternative to state-of-the-art compressor technology for driving domestic sized heat pumps. The inherent characteristics of turbocompressors manage to fit the heat p ...

2017

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Lubrication

A mechanistic understanding of the wear coefficient: From single to multiple asperities contact

Frictional Heating Processes and Energy Budget During Laboratory Earthquakes

Effect of fluid viscosity on fault frictional behaviour

Study of the plastic interaction of asperities sitting on a rough surface

Tip asymptotic of a hydraulic fracture driven by a power law fluid accounting for the presence of a fluid lag

Modeling of the propagation of hydraulic fracture using cohesive zone models

Normal adhesive contact on rough surfaces: efficient algorithm for FFT-based BEM resolution

Micromechanical Origins of Adhesive Wear Mechanisms: From Asperity Smoothing to Debris Creation

The dam-break problem for eroding viscoplastic fluids.

Turbocompressors for Domestic Heat Pumps – A Critical Review

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Chat with Graph Search

Effect of fluid viscosity on fault frictional behaviour

Frictional Heating Processes and Energy Budget During Laboratory Earthquakes

Study of the plastic interaction of asperities sitting on a rough surface

Micromechanical Origins of Adhesive Wear Mechanisms: From Asperity Smoothing to Debris Creation

A mechanistic understanding of the wear coefficient: From single to multiple asperities contact

Turbocompressors for Domestic Heat Pumps – A Critical Review

Modeling of the propagation of hydraulic fracture using cohesive zone models

Tip asymptotic of a hydraulic fracture driven by a power law fluid accounting for the presence of a fluid lag

The dam-break problem for eroding viscoplastic fluids.

Normal adhesive contact on rough surfaces: efficient algorithm for FFT-based BEM resolution