Evaporative Spray G:Guidelines & Participants

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ECN Evaporative Spray G - Participants

Evaporative Spray G (possible) Participants: Name Institution email Julien Manin Sandia jmanin@sandia.govLyle Pickett Sandia lmpicke@sandia.govWei Zeng Sandia wzeng@sandia.govGilles Bruneaux IFPen Gilles.bruneaux@ifpen.frLama Itani IFPen lama.itani@ifpen.frScott Parrish GM scott.parrish@gm.comRonald Grover GM ronald.grover@gm.com;Luigi Allocca IM l.allocca@im.cnr.itJosh Lacey University of Melbourne joshua.lacey@unimelb.edu.auYoungjing Jung KAIST yjjung@kaist.ac.kr;Peter Hutchins Infineum p.t.hutchins@gmail.comNoah Van Dam UW nvandam@wisc.eduTommasso Lucchini Polit. di Milano tommaso.lucchini@polimi.itSibendu Som ANL ssom@anl.govChris Powell ANL powell@anl.govAlan Kastengren ANL akastengren@anl.govDavid P. Schmidt University of Massachussets schmidt@ecs.umass.eduRaúl Payri CMT rpayri@mot.upv.esDaniel Vaquerizo CMT davasan@mot.upv.es

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ECN Evaporative Spray G - Guidelines

Evaporative Spray G Guidelines:• Experimental

• Comparison of measurements between institutions to create recommended measurements and best practices. • Liquid and Vapor penetration defined as maximum axial penetration. • DBI visualization is recommended when measuring liquid penetration. • In general, the recommendations made in the spray visualization part of ECN3 would be

a good starting point. • Create an experimental database of vapor and liquid spray characteristics for modelers.

• Implement variations of ambient pressure around the Spray G nominal point to find spray-collapsing conditions.

• In general, parametric variations around the nominal point are welcomed for database purposes as well as to identify different relations.

• Understanding plume to plume interactions by tracking individual plumes using frontal visualization.

• Understanding flash-boiling. • Frontal and lateral visualization using Mie and/or Schlieren.• Effect of ambient density, fuel temperature and injection pressure on flash boiling.

• How to characterize cavitation?• Other measurements: fuel concentration maps, effect of fuel impacting walls, multiple

injections… • Modeling

• Establish recommended practices to promote agreement between institutions. • Development and validation of models for different operating conditions (Spray G, G2,G3).• Validation of models against those points identified as spray-collapsing conditions

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ECN

Parameter Spray G Spray G2 Spray G3• Fuel Iso-octane Iso-octane Iso-

octane• Fuel pressure 20 Mpa 20 Mpa 20 MPa• Fuel temperature 90ᵒ C 90ᵒ C 90ᵒ C• Injector temperature 90ᵒ C 90ᵒ C 90ᵒ C• Ambient temperature 300ᵒ C 60ᵒ C 60ᵒ C• Ambient density 3.5 kg/m3 0.5 kg/m3 1.0 kg/m3

(Pressure - Nitrogen) (600 kPa) (50 kPa) (100 kPa)

• Injected quantity 10 mg 10 mg 10 mg• Number of injections 1 1 1

Spray G – Conditions to Consider