Objective

As written in the PSI record:

The primary objectives of this flight experiment are: A. Obtain soot-inception limits of quasi-steady normal and inverse spherical diffusion flames as functions of flow rate, Zst, amount of inert (N2 or CO2), and pressure for C2H4 and CH4 flames. Identify the corresponding temperatures in hot regions. Obtain similar limits and temperatures for inverse and normal coflow flames. B. Obtain detailed measurements in quasi-steady normal and inverse spherical diffusion flames for C2H4 and CH4. Determine the effects of flow rate, Zst, amount of N2, and pressure on flame temperature, size, color, and soot volume fraction. Evaluate the possible existence of steady flames. C. Obtain extinction limits as functions of Zst, amount of N2, and pressure for normal and inverse spherical C2H4 and CH4 flames. Identify the corresponding temperatures in hot regions. Identify the presence of radiative or kinetic extinction. Evaluate whether pseudo-flammability limits can be obtained for these flames.

Fingerprint COMPUTED

Computed from the 327 run rows below: what varied, what was held constant, and what was never recorded.

109 inverse-flame runs record a burner-fed oxidizer of 21.2–85.0% O₂. That is the stream fed through the burner, not the surrounding atmosphere, so it is not on the ambient O₂ axis.

Placeable

207 of 327 record O₂ and can be placed (the engine can compute a distance); 187 also record pressure and appear on the charts. Not placeable: 120: inverse flame: O₂ is the burner-fed oxidizer stream, not the ambient atmosphere.

Gravity

Microgravity (327)

Fuel classes

Gas burner (327)

Flow regime

quiescent (327)

Materials (2)

C2H4 (307) · C3H8 (20)

Outcomes

not recorded (327)

Measured quantities

Tad — computed (as reported in PSI) [K] (256) · oxidizer-stream O₂ — inverse flame, not ambient [% O₂ (burner-fed oxidizer)] (109)

Per-run identifiers

Test

Data-quality flags

• assumed-value × 327: A value assumed by MARGIN (see the note), not stated in the source.
• missing × 140: At least one of O₂, pressure or flow is not recorded in the source row.
• burner-fed-oxidizer × 120: Inverse flame: the O₂ value is the oxidizer stream fed through the burner, not the surrounding atmosphere.

Run table

Normalized values with the original cell beneath each. Inspect a row for its conversions, flags, source and distance to your scenario.

ACME/Flame Design: 327 runs from PSI-10_Experimental table_Flame Design_Normal Flame.csv, PSI-10_Experimental table_Flame Design_Inverse Flame.csv, showing the first 50.