33 citations · 56 across the 8 of their papers we have counts for
8 papers
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…