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Ventilation factor

A parameter used in fully developed fire characterisation, calculated as Av × Hv^0.5, where Av is the area of ventilation openings (m²) and Hv is their height (m). Used in Thomas's and other correlations to estimate peak fire temperature.

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Related terms

BackdraftDeflagrationEquivalence ratio (phi)FlashoverFuel-controlled fireHot gas layerLow burn pattern (LBP)Neutral planeVentilation-controlled fire

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