6 August 2014 PTV analysis of the entrained air into the diesel spray at high-pressure injection
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Proceedings Volume 9232, International Conference on Optical Particle Characterization (OPC 2014); 92320C (2014); doi: 10.1117/12.2063632
Event: International Conference on Optical Particle Characterization (OPC 2014), 2014, Tokyo, Japan
Abstract
In order to clarify the effect of high-pressure injection on soot reduction in terms of the air entrainment into spray, the air flow surrounding the spray and set-off length indicating the distance from the nozzle tip to the flame region in diffusion diesel combustion were investigated using 300MPa injection of a multi-hole injector. The measurement of the air entrainment flow was carried out at non-evaporating condition using consecutive PTV (particle tracking velocimetry) method with a high-speed camera and a high-frequency pulse YAG laser. The set-off length was measured at highpressure and high-temperature using the combustion bomb of constant volume and optical system of shadow graph method. And the amount of air entrainment into spray until reaching set-off length in diffusion combustion was studied as a factor of soot formation.
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Naoki Toda, Hayato Yamashita, Makoto Mashida, "PTV analysis of the entrained air into the diesel spray at high-pressure injection", Proc. SPIE 9232, International Conference on Optical Particle Characterization (OPC 2014), 92320C (6 August 2014); doi: 10.1117/12.2063632; https://doi.org/10.1117/12.2063632
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KEYWORDS
Combustion

Diffusion

High speed cameras

Imaging systems

Particles

Visualization

Nd:YAG lasers

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