[ PSI-142 // FLEX ]
CFI-Counterflow — Quantitative Studies of Cool Flame Transitions at Radiation / Stretch Extinction Using Counterflow Flames
Hardware: Ground Counterflow Burner / CIR Reference · Program: Not Applicable · DOI 10.60555/80qf-vj95
Objective
By using the Flame Extinguishment (FLEX) experimental data from the Physical Sciences Informatics (PSI) system of combustion science, the purpose of this grant was to conduct new simulations and ground-based experiments using ozone-sensitized counterflow flames to: 1) Develop a new diagram of the flammability limits of diffusional cool flames affected by radiation, diffusion, and convection. 2) Bridge the knowledge gap between the flammability limits and extinction limits of hot flames and cool flames. 3) Verify the phenomena observed on the ISS flame extinguishment experiments. 4) Obtain new, quantitative data of extinction limit, flame temperature, and species distribution for the validation of kinetic and radiation models involving cool flames. 5) Extend the cool flame experiments from the original ISS droplet experiments to a more general ground-based combustion system involving radiation, diffusion, convection, and low-temperature chemistry while maintaining a one-dimensional geometry.
CFI-Counterflow (PSI-142, Ground Counterflow Burner / CIR Reference, Not Applicable). Investigation record only; no per-run test table in PSI (DOI 10.60555/80qf-vj95).
Metadata Completeness
0%
Share of key conditions (oxygen, pressure, airflow) reported in the source tables.
Representative Conditions
Median of the values reported across this investigation's test runs.
- Fuel / Material
- Not reported
- Gravity
- 0 g (microgravity, ISS / Cygnus flight)
- Oxygen Concentration
- Not reported
- Ambient Pressure
- Not reported
- Airflow Velocity
- Not reported
The PSI record mentions both flight and ground work; 0 g reflects its ISS / Cygnus flight metadata.
Findings summary
No per-run test table in PSI (investigation record only); microgravity (0 g, ISS / Cygnus flight).
Source: NASA PSI PSI-142: PSI-142_investigation.json (psi.nasa.gov). File, sheet and row are listed per test run below.
Experiment Design
PSI-142 has no per-test table in PSI, so variables are described in the investigation record above.
Test Runs (0)
Conditions and measurements for each run. Open a run to see every value and its source row.
Metadata only
PSI publishes no per-test table for this investigation, so no runs are listed. The objective and hardware above come from its investigation record.