Experimental Investigation of Droplet Size and Velocity in Clustered Diesel Sprays under High-Pressure and High-Temperature Conditions RWTH Aachen University

Format:

Conference/Event

Author/Creator:

Cárdenas, Cárdenas, author.

Contributor:

Kneer, Reinhold

Martin, Diana

Conference Name:

SAE 2010 Powertrains Fuels & Lubricants Meeting (2010-10-25 : San Diego, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2010

Summary:

An experimental study on the interaction of sprays fromclustered orifices is presented. Droplet size and velocityinformation has been gained by means of Phase Doppler Anemometryfor different nozzle configurations varying the diverging openingangle between clustered sprays from 0° to 15°.These nozzles were investigated under high-pressure (50 bar) andhigh-temperature (800 K) conditions in a pressure chamber and theresults are compared to two standard nozzles with flow ratescorresponding either to the flow rate of the cluster nozzleconfiguration or half of the flow rate of this configuration. Twoinjection pressures, 600 bar and 1100 bar, were used to investigateall nozzles.This investigation completes the characterization of sprays fromthe cluster nozzles presented in an earlier work. Findings obtainedtherein were used to choose the measurement procedure for thepresent investigation and also to determine the spray width inorder to obtain the spray angle.Comparison of measured and calculated results showed that thecluster configuration enhances evaporation compared to aconventional nozzle configuration. The observed spray angle for thecluster configuration is considerably higher, but the sprayvelocities are lower than for the conventional configuration. Thesefindings also explain the reduction of the penetration length forclustered sprays

Notes:

Vendor supplied data

Publisher Number:

2010-01-2240

Access Restriction:

Restricted for use by site license