35 citations · 76 across the 11 of their papers we have counts for
11 papers
Generalized analytical relations to describe global optical systems with a plenoptic camera
Marc Brunel, Pierre Schleuniger, Adrian Marszalek +4
The optical transfer matrix formalism is used to describe global set-ups incorporating a plenoptic camera. Analytical relations that give the effective resolution, depth of field,…
Multiscale analysis of the textural atomization process of a rocket engine assisted coaxial jet
Leonardo Geiger, Nicolas Fdida, Christophe Dumouchel +3
A method for analyzing liquid ligaments of a textural atomization process is presented in this article for the case of a rocket engine type assisted atomization process under combu…
Simultaneous high-speed internal and external flow measurements for a high-pressure diesel nozzle
Harsh Purwar, Saïd Idlahcen, Loïc Méès +4
We present an extensive experimental study focused on understanding the impact of cavitation in a high-pressure diesel nozzle on the macroscopic properties of fuel spray. Several h…
Effect of cavitation on velocity in the near-field of a diesel nozzle
Harsh Purwar, Kamel Lounnaci, Saïd Idlahcen +4
The entire process of atomization of the fuel in an internal combustion engine plays a very important role in determining the overall efficiency of these engines. A good atomizatio…
Time-resolved imaging with OKE-based time-gate: enhancement in spatial resolution using low-coherence ultra-short illumination
Harsh Purwar, Saïd Idlahcen, Claude Rozé +1
We propose a collinear optical Kerr effect (OKE) based time-gate configuration with low coherence illumination source, derived from the supercontinuum (SC) generated by focusing th…
Collinear, two-color optical Kerr effect shutter for ultrafast time-resolved imaging
Harsh Purwar, Saïd Idlahcen, Claude Rozé +2
Imaging with ultrashort exposure times is generally achieved with a crossed-beam geometry. In the usual arrangement, an off-axis gating pulse induces birefringence in a medium exhi…
Quantitative comparison of fuel spray images obtained using ultrafast coherent and incoherent double-pulsed illumination
Harsh Purwar, Kamel Lounnaci, Saïd Idlahcen +3
We present a quantitative comparison between the high-pressure fuel spray images obtained experimentally using classical imaging with coherent and incoherent ultrafast illumination…
Collinear two colour Kerr effect based time-gate for ballistic imaging
Harsh Purwar, Saïd Idlahcen, Claude Rozé +1
A novel setup is presented for ballistic imaging using an efficient ultrafast Kerr effect based optical time-gate with gating times of the order of ~0.8 picoseconds. At first, the…
Ballistic Imaging of High-Pressure Fuel Sprays using Incoherent, Ultra- short Pulsed Illumination with an Ultrafast OKE-based Time Gating
Harsh Purwar, Saïd Idlahcen, Claude Rozé +1
We present an optical Kerr effect based time-gate with the collinear incidence of the pump and probe beams at the Kerr medium, liquid carbon disulfide, for ballistic imaging of the…
Velocity measurements in the near field of a diesel fuel injector by ultrafast imagery
David Sedarsky, Saïd Idlahcen, Jean-Bernard Blaisot +1
This paper examines the velocity profile of fuel issuing from a high-pressure single-orifice diesel injector. Velocities of liquid structures were determined from time-resolved ult…
Planar velocity analysis of diesel spray shadow images
David Sedarsky, S. Idlahcen, J-B. Blaisot +1
The focus of this work is to demonstrate how spatially resolved image information from diesel fuel injection events can be obtained using a forward-scatter imaging geometry, and us…