Benjamin Sobac
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View article: Small Leidenfrost droplet dynamics
Small Leidenfrost droplet dynamics Open
An isolated Leidenfrost droplet levitating over its own vapour above a superheated flat substrate is considered theoretically, the superheating for water being up to several hundred degrees above the boiling temperature. The focus is on th…
View article: Small Leidenfrost droplet dynamics
Small Leidenfrost droplet dynamics Open
An isolated Leidenfrost droplet levitating over its own vapor above a superheated flat substrate is considered theoretically, the superheating for water being up to several hundred degrees above the boiling temperature. The focus is on the…
View article: Beads, bubbles and drops in microchannels: stability of centred position and equilibrium velocity
Beads, bubbles and drops in microchannels: stability of centred position and equilibrium velocity Open
Understanding and predicting the dynamics of dispersed micro-objects in microfluidics is crucial in numerous natural, industrial and technological situations. In this paper, we experimentally characterized the equilibrium velocity $V$ and …
View article: Water and heat exchanges in mammalian lungs
Water and heat exchanges in mammalian lungs Open
A secondary function of the mammals' respiratory system is during inspiration to heat the air to body temperature and to saturate it with water before it reaches the alveoli. Relying on a mathematical model, we comprehensively analyze this…
View article: Beads, bubbles and drops in microchannels: stability of centered position and equilibrium velocity
Beads, bubbles and drops in microchannels: stability of centered position and equilibrium velocity Open
Understand and predict the dynamics of dispersed micro-objects in microfluidics is crucial in numerous natural, industrial and technological situations. In this paper, we experimentally characterized the equilibrium velocity $V$ and latera…
View article: Comprehensive Analysis of Heat and Water Exchanges in the Human Lungs
Comprehensive Analysis of Heat and Water Exchanges in the Human Lungs Open
This work presents a new mathematical model of the heat and water exchanges in the human lungs (newborn to adult). This model is based on a local description of the water and energy transports in both the lumen and the surrounding tissues,…
View article: Erratum: Leidenfrost effect: Accurate drop shape modeling and refined scaling laws [Phys. Rev. E <b>90</b>, 053011 (2014)]
Erratum: Leidenfrost effect: Accurate drop shape modeling and refined scaling laws [Phys. Rev. E <b>90</b>, 053011 (2014)] Open
This corrects the article DOI: 10.1103/PhysRevE.90.053011.
View article: Self-induced flows enhance the levitation of Leidenfrost drops on liquid baths
Self-induced flows enhance the levitation of Leidenfrost drops on liquid baths Open
The Leidenfrost effect, classically associated with drops levitating on their own vapor over hot solid surfaces, can also be observed over hot baths of nonvolatile liquids. In view of substrate fluidity, heat transfer through the bath to t…
View article: Allometric scaling of heat and water exchanges in the mammals' lung
Allometric scaling of heat and water exchanges in the mammals' lung Open
Mammals have a high metabolism that produces heat proportionally to the power 3/4 of their mass at rest. Any excess of heat has to be dissipated in the surrounding environment to prevent overheating. Most of that dissipation occurs through…
View article: Final fate of a Leidenfrost droplet: Explosion or takeoff
Final fate of a Leidenfrost droplet: Explosion or takeoff Open
International audience
View article: Heat and water transfers in the bronchi: clinical insights from a theoretical modeling study
Heat and water transfers in the bronchi: clinical insights from a theoretical modeling study Open
International audience
View article: New analysis of the mechanisms controlling the bronchial mucus balance
New analysis of the mechanisms controlling the bronchial mucus balance Open
info:eu-repo/semantics/inPress
View article: Energy dissipation in an asymmetric tracheobronchial tree: a CFD analysis
Energy dissipation in an asymmetric tracheobronchial tree: a CFD analysis Open
International audience
View article: Final fate of a Leidenfrost droplet: Explosion or takeoff
Final fate of a Leidenfrost droplet: Explosion or takeoff Open
Evaporating Leidenfrost drops either “take-flight” or “crash-explode”; the amount of dirt they carry governs their final fate.
View article: Asymptotic theory for a Leidenfrost drop on a liquid pool
Asymptotic theory for a Leidenfrost drop on a liquid pool Open
Droplets can be levitated by their own vapour when placed onto a superheated plate (the Leidenfrost effect). It is less known that the Leidenfrost effect can likewise be observed over a liquid pool (superheated with respect to the drop), w…
View article: Influence of Bénard–Marangoni instability on the morphology of drying colloidal films
Influence of Bénard–Marangoni instability on the morphology of drying colloidal films Open
Bénard–Marangoni instability developing during the drying of colloidal layers can affect the homogeneity of the consolidated film and then the crack pattern and the delamination process.
View article: New insights into the mechanisms controlling the bronchial mucus balance
New insights into the mechanisms controlling the bronchial mucus balance Open
In this work, we aim to analyze and compare the mechanisms controlling the volume of mucus in the bronchial region of the lungs of a healthy human adult, at rest and in usual atmospheric conditions. This analysis is based on a balance equa…
View article: Evaporation dynamics of completely wetting drops on geometrically textured surfaces
Evaporation dynamics of completely wetting drops on geometrically textured surfaces Open
This study deals with the evaporation dynamics of completely wetting and highly volatile drops deposited on geometrically textured but chemically homogeneous surfaces. The texturation consists in a cylindrical pillars array with a square p…
View article: Leidenfrost drops cooling surfaces: theory and interferometric measurement
Leidenfrost drops cooling surfaces: theory and interferometric measurement Open
When a liquid drop is placed on a highly superheated surface, it can be levitated by its own vapour. This remarkable phenomenon is referred to as the Leidenfrost effect. The thermally insulating vapour film results in a severe reduction of…
View article: Self-propelled Leidenfrost drops on a thermal gradient: A theoretical study
Self-propelled Leidenfrost drops on a thermal gradient: A theoretical study Open
We theoretically investigate the behavior of Leidenfrost drops on a flat substrate submitted to a horizontal thermal gradient and highlight that they are able to self-propel in a preferential direction. Namely, they are found to travel tow…
View article: Surface cooling under a Leidenfrost drop: comparison between interferometric measurements and numerical simulations
Surface cooling under a Leidenfrost drop: comparison between interferometric measurements and numerical simulations Open
info:eu-repo/semantics/published