Benchmark Spray Combustion Database—Geometry and Initial/Boundary Conditions

Basic Schematics

Figure 1. NIST research spray combustion chamber

Figure 2. Relevant dimensions (in mm) of the burner
and combustion chamber.

Detailed Schematics

Scans of the original schematics are available as PDF files.

• Burner
• Combustion chamber

Additional Information and Boundry Conditions

• Atomizer
  • Model: Delavan WDA-1.0 simplex atomizer with sintered filter
  • Stainless steel pressure-jet
  • Hollow-cone spray
  • Nominal 60 degree spray angle

• Operating Conditions
  • Fuel
    • Fuel type - methanol (reaction thermochemistry database available from NIST)
    • Fuel flow rate - 3.0 kg h^-1
    • Fuel temperature - ambient
    • Fuel line pressure - 689 kPa
  • Combustion air
    • Cascade vane angle - 50.9 deg
    • Air geometric swirl number - 0.47
    • Air flow rate - 56.7 m³ h^-1
    • Air temperature - ambient
  • Additional Data
    • Equivalence ratio - 0.3
    • Flame standoff distance - ~5 mm
    • Chamber pressure - ambient

• Measurements
  • Inlet Profiles
    • Air velocity
    • Spray size and velocity distributions
  • Axial profiles along chamber wall
    • Temperatures
  • Exhaust plane profiles
    • Gas temperatures and velocity
    • Gas phase concentrations
  • Spatial profiles within the flame and chamber
    • Droplet size and velocity distribution
    • Droplet number density and volume flux
    • Gas velocity components
    • Gas temperatures
    • Major species concentrations
    • Observed spray flame structure