Benchmark Spray Combustion Database

Geometry and Initial/Boundary Conditions

Diagram depicting the NIST research spray combustion chamber

Figure 1. NIST research spray combustion chamber

Diagram depicting relevant dimensions of the NIST research spray
combustion chamber

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

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

NIST, National Institute of Standards and Technology

Material Measurement Laboratory

Standard Reference
Data Program

Chemistry
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