Construct · 1 fields · 1 citations

fire whirl: a standalone construct

One name. One construct. A landmark on the map.

● anchor · a single construct in fire dynamics Nearest construct by meaning·not indexed
fire whirl1 CONSTRUCTFire whirlEMMONS & YING · 1967

A single standalone construct; nearby constructs are located against it in the Collider. Tap a field for its definition, unit, and measures.

Fire dynamics

A spinning vertical column of flame

In fire dynamics, a fire whirl is a vertically oriented, rotating column of flame and hot gas that forms when a fire's buoyant updraft concentrates ambient rotation, much as a dust devil or tornado concentrates vorticity. Emmons and Ying's 1967 The fire whirl produced the phenomenon in the laboratory and showed how imposed circulation tightens the plume into a whirl that burns far more intensely and taller than the same fire without rotation. The referent is the coupling of combustion-driven buoyancy with angular momentum, dangerous in wildfires and mass fires because it sharply raises burning rate, flame height, and the lofting of firebrands.[1]

Unit
The rotation and intensified flame height of a buoyancy-driven fire vortex
Recovery means
Not applicable
Measured by
Characterised by circulation strength, the rise in flame height and burning rate relative to a non-rotating fire, and core rotational velocity

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Nearby constructs

crown fire1 fields · 1 citationsanchor · a single construct in wildland fire scienceboilover1 fields · 2 citationsanchor · a single construct in fire safetybuoyancy4 fields · 4 citationsjingle · one word, four constructs

References

  1. Emmons, H. W., & Ying, S.-J. (1967). The fire whirl. Symposium (International) on Combustion, 11(1), 475–488. https://doi.org/10.1016/S0082-0784(67)80172-3

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