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Characterization of diesel model fuel sprays impinging on a temperature controlled wall using rapid thermocouples and PDPA (Phase Doppler Particle Analyzer)

Alf Magnusson (Institutionen för tillämpad mekanik) ; Tobias Joelsson ; Francois Turcan ; Sven Andersson (Institutionen för tillämpad mekanik)
Ilass Europe 2008 (2008)
[Konferensbidrag, övrigt]

Spray-wall interaction has been found to influence the rate of heat release and the formation of emissions in DI diesel engines. Experimental and numerical studies of sprays impinging on a wall have shown that the heat transfer and droplet size and velocity distributions vary when there is a change of such parameters as wall temperature, air temperature, injection pressure and distance to the wall. The objective of this work is to experimentally study how the surface temperature of a wall and different air temperatures affect the properties of an impinging spray of a two--component model fuel (IDEA) that consists of 70 % n-decane and 30 % 1-methylnaphthalene using rapid thermocouples and a phase doppler particle analyzer (PDPA). The experiments were carried out in the high-pressure, high-temperature (HP/HT) spray rig at Chalmers. Air temperatures were chosen to achieve both evaporating and non-evaporating conditions of the fuel. The air pressure was adjusted to give the same density for all cases. A standard common rail system controlled by a solenoid valve together with a single-hole nozzle was used for two different fuel injection pressures.

Denna post skapades 2008-11-15. Senast ändrad 2014-09-29.
CPL Pubid: 77958


Institutioner (Chalmers)

Institutionen för tillämpad mekanik (1900-2017)


Teknisk mekanik

Chalmers infrastruktur

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Denna publikation ingår i:

Spray-Wall Interaction of Diesel Sprays