Validation experiments to determine radiation             partitioning of heat flux to an object in a fully turbulent fire.

Blanchat, Thomas K.; O’Hern, Timothy J.; Kearney, Sean P.; Ricks, Allen Joseph; Jernigan, Dann A.

doi:10.2172/887481

Cited by 2 publications

(3 citation statements)

References 12 publications

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“…Comparisons are made to data that are described in [1][2][3]. These tests were performed at the FLAME facility at Sandia National Laboratories in Albuquerque, NM.…”

Section: Methodsmentioning

confidence: 99%

“…The tubes were modeled as solid insulation. More details on the tests are found in the test documentation [1,3].…”

Section: Methodsmentioning

confidence: 99%

“…These tests were performed with methanol fuel to reduce soot formation for the optical diagnostics, and are documented in [1][2][3]. The tests were performed in the new Fire Laboratory for the Accreditation of Models and Experiments (FLAME) facility at Sandia National Laboratories, which was designed with strict control of boundary conditions for collecting validation-quality data.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fire Model Validation for Gas Temperatures and Radiative/Convective Partitioned Heat Flux

Brown¹,

Dowding²,

Nicolette³

et al. 2008

Fire Saf. Sci.

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A recent series of fire experiments has provided previously unavailable high-fidelity data for heat fluxes and gas temperature in a large-scale fire. These include histograms of temporally-resolved gas temperature measurements, which are helpful in assessing the time accuracy of a transient code. A convergence analysis has been performed to determine the appropriate code requirements for comparing with these new data. The convergence analysis suggests a significant benefit to employing higher resolution than was readily possible for these comparisons. Comparisons are made to the data for measured values including partitioned convective/radiative heat flux, and gas phase temperatures. Uncertainty analyses show that the uncertainties due to grid refinement are on the order of those from model input parameter uncertainties. The gas phase temperature results suggest the need for increased mesh resolution to resolve the temperature distributions.

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“…Comparisons are made to data that are described in [1][2][3]. These tests were performed at the FLAME facility at Sandia National Laboratories in Albuquerque, NM.…”

Section: Methodsmentioning

confidence: 99%

“…The tubes were modeled as solid insulation. More details on the tests are found in the test documentation [1,3].…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fire Model Validation for Gas Temperatures and Radiative/Convective Partitioned Heat Flux

Brown¹,

Dowding²,

Nicolette³

et al. 2008

Fire Saf. Sci.

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Hydrocarbon characterization experiments in fully turbulent fires.

Ricks¹,

Blanchat²

2007

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As the capabilities of numerical simulations increase, decision makers are increasingly relying upon simulations rather than experiments to assess risks across a wide variety of accident scenarios including fires. There are still, however, many aspects of fires that are either not well understood or are difficult to treat from first principles due to the computational expense. For a simulation to be truly predictive and to provide decision makers with information which can be reliably used for risk assessment the remaining physical processes must be studied and suitable models developed for the effects of the physics. The model for the fuel evaporation rate in a liquid fuel pool fire is significant because in well-ventilated fires the evaporation rate largely controls the total heat release rate from the fire. A set of experiments are outlined in this report which will provide data for the development and validation of models for the fuel regression rates in liquid hydrocarbon fuel fires. The experiments will be performed on fires in the fully turbulent scale range (> 1 m diameter) and with a number of hydrocarbon fuels ranging from lightly sooting to heavily sooting. The importance of spectral absorption in the liquid fuels and the vapor dome above the pool will be investigated and the total heat flux to the pool surface will be measured. The importance of convection within the liquid fuel will be assessed by restricting large scale liquid motion in some tests. These data sets will provide a sound, experimentally proven basis for assessing how much of the liquid fuel needs to be modeled to enable a predictive simulation of a fuel fire given the couplings between evaporation of fuel from the pool and the heat release from the fire which drives the evaporation.

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Validation experiments to determine radiation partitioning of heat flux to an object in a fully turbulent fire.

Cited by 2 publications

References 12 publications

Fire Model Validation for Gas Temperatures and Radiative/Convective Partitioned Heat Flux

Fire Model Validation for Gas Temperatures and Radiative/Convective Partitioned Heat Flux

Hydrocarbon characterization experiments in fully turbulent fires.

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