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 [email protected] Pickett Sandia [email protected] Zeng Sandia [email protected] Bruneaux IFPen [email protected] Itani IFPen [email protected] Parrish GM [email protected] Grover GM [email protected];Luigi Allocca IM [email protected] Lacey University of Melbourne [email protected] Jung KAIST [email protected];Peter Hutchins Infineum [email protected] Van Dam UW [email protected] Lucchini Polit. di Milano [email protected] Som ANL [email protected] Powell ANL [email protected] Kastengren ANL [email protected] P. Schmidt University of Massachussets [email protected]úl Payri CMT [email protected] Vaquerizo CMT [email protected]
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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
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