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Evaporative Spray G:

Evaporative Spray G:. Guidelines & Participants. Evaporative Spray G - Participants. Evaporative Spray G ( possible ) Participants :. Evaporative Spray G - Guidelines. Evaporative Spray G Guidelines:. Experimental

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Evaporative Spray G:

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  1. Evaporative Spray G: Guidelines & Participants

  2. Evaporative Spray G - Participants Evaporative Spray G (possible) Participants:

  3. 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 welcome 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

  4. Spray G – Conditions to Consider Parameter Spray GSpray G2Spray 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/m30.5 kg/m31.0 kg/m3 (Pressure - Nitrogen) (600 kPa) (50 kPa) (100 kPa) • Injected quantity 10 mg 10 mg 10 mg • Number of injections 1 1 1

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