Rates of ‘production’ of hot gases in roof venting experiments

Hinkley, P.L.

doi:10.1016/0379-7112(86)90032-9

Cited by 47 publications

(36 citation statements)

References 2 publications

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“…1 also provides a good prediction of entrainment into plumes above the fire. This has observation has also been reported by Hinkley [22] using the model proposed by Thomas et al [8].…”

Section: Flame Entrainmentsupporting

confidence: 72%

Flame Entrainment and Its Application to Compartment Fires

Lattimer¹

2008

Fire Saf. Sci.

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Entrainment into flames is important in predicting the mass flow into the upper-layer of compartment fires where the flame height is similar to or greater than the layer interface height. An analytical model for entrainment into flames was developed based on the simple wetted perimeter approach. The model was validated with existing data and other analytical models for area and line fires located in the open, against a wall, and in a corner. The validated flame entrainment model was integrated into a two-layer compartment fire model and used to predict door flow rates and interface heights with the fire in different locations within the compartment. Predicted door flow rates and interface heights agreed well with compartment fire data from several sources.

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“…1 also provides a good prediction of entrainment into plumes above the fire. This has observation has also been reported by Hinkley [22] using the model proposed by Thomas et al [8].…”

Section: Flame Entrainmentsupporting

confidence: 72%

Flame Entrainment and Its Application to Compartment Fires

Lattimer¹

2008

Fire Saf. Sci.

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“…Given accurate information concerning the flow at the top of the flame, this location can be calculated; however, because this information is in general not available, correlations must be used. [17], Hinkley [9], and Delichatsios [20]. The primary results of four of these models or correlations for the prediction of the dependence of the plume mass flux on the height above the fire, Z, fire source diameter D or perimeter P, and heat release rate, Q, in the flame plume are summarized briefly below: [19] a Z 1.3Q 0.5 no dependence on burner diameter Delichatsios [20] several regimes no dependence on heat release…”

Section: Plume Modelsmentioning

confidence: 99%

“…This work has been reviewed recently in a more available form by Hinkley [9]. Plumes generated by room-scale fires produced by gas burners and wood cribs were placed beneath a hood-like ceiling with short vertical side walls.…”

Section: Hood Techniquementioning

confidence: 99%

Mass Flux In Fire Plumes

Zukoski¹

1994

Fire Safety Science - Proceedings of the Fourth International S

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A review is given of data that describe the mass flux of gas in large buoyant diffusion flames, with the aim of developing a rational picture for this process as well as a correlation of the data. A brief review of flame-height scaling parameters is followed by a discussion of measurement techniques,the previous work on far-field and fire-plume models, and a description of an effort to develop a rational entrainment model.

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“…w(r,z) 0.01 (16) w(0, z) (17) To distinguish from the above, the mass flow rate calculated by the vertical velocity w as in equation (16) is relabeled as mlw : mlw = Jo-lOW" 2~rdr (18) Comparisons of numerical mass flow with those predicted by the empirical plume equations -Heskestad's equation [26' 31] , which is listed in NFPA 92B; Zukoski's equation, the equation due to McCaffrey and 'large fire' and 'small fire' plume equations due to Thomas [23], claiming that it is very satisfactory for heights up to 10 times the linear dimension (or diameter) of the fire, the results predicted by this equation are still higher than the results predicted by NFPA 92B or Zukoski's equation.…”

Section: / )mentioning

confidence: 99%

Numerical studies on fire-induced thermal plumes

Chow

et al. 2005

J. of Therm. Sci.

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Most of the expressions describing fire plumes reported in the literature are known to be based on experiments. Due to different experimental methods, the geometry of the fire sources, fuel types and surrounding conditions, it is difficult to derive a comprehensive picture of a plume with its temperature and velocity fields on the basis of existing theoretical work. Computational Fluid Dynamics (CFD), which is regarded as a practical engineering tool in fire engineering by the experts, is sure to be able to give more details of the plume behavior under various situations. Aerodynamics for thermally-induced plumes will be studied numerically with CFD. Four typical axisymmetric plume equations will be assessed in this paper, and investigations will be useful for fire engineers in designing smoke management systems in an affordable fashion. This is a critical point in implementing engineering performance-based fire code.

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Rates of ‘production’ of hot gases in roof venting experiments

Cited by 47 publications

References 2 publications

Flame Entrainment and Its Application to Compartment Fires

Flame Entrainment and Its Application to Compartment Fires

Mass Flux In Fire Plumes

Numerical studies on fire-induced thermal plumes

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