Interaction of an Isolated Sprinkler Spray and a Two-Layer Compartment Fire Environment.
Interaction of an Isolated Sprinkler Spray and a
Two-Layer Compartment Fire Environment.
Cooper, L. Y.
International Journal of Heat and Mass Transfer, Vol.
38, No. 4, 679-690, March 1995.
Sponsor:American Architectural Manufacturers Assoc., Des
building fires; compartment fires; computer models; fire
models; mathematical models; vents; sprinklers;
sprinkler response; zone models
A model is developed to simulate the interaction of a
sprinkler and a two-layer fire environments under
arbitrary conditions of sprinkler evaluation, upper- and
lower-layer thickness and temperature. The sprinkler is
characterized by water flow rate and four measurable
device parameters. The model simulates the effects of
the sprinkler spray as it entrains, drives downward,
humidifies, and cools gases in the upper and lower
layers. It predicts the flow rates of mass, enthalpy,
products of combustion, and evaporated water to each of
the two layers as a result of sprinkler operation.
Results of example calculations are presented.