Abstract
This paper presents an experimental investigation into the total flame length of a buoyancy-controlled jet flame bounded by a wall and ceiling. The flames produced by square jet nozzles with different aspect ratios and various heat release rates were studied. Depending on the nozzle configuration, when the buoyancy-controlled and wall-bounded jet flame impinged on the ceiling, it was observed to form a half-ellipse-shaped ceiling jet flame. Similar to free-standing flames, the total dimensionless flame length of the wall- and ceiling-bounded jet flame can be correlated with a power function of the dimensionless heat release rate using a coefficient of proportionality. However, this coefficient is no longer a constant, but is a function of the ceiling height.
| Original language | English |
|---|---|
| Pages (from-to) | 1172-1183 |
| Number of pages | 12 |
| Journal | Applied Thermal Engineering |
| Volume | 127 |
| DOIs | |
| Publication status | Published - 2017 |
Keywords
- aspect ratio (aerofoils)
- fuel
- gas