Results 271 to 280 of about 370,094 (350)

Opposed-flow flame spread in microgravity-theoretical prediction of spread rate and flammability map

Proceedings of the Combustion Institute, 2005
Abstract The spread rate formulas of de Ris in the thermal regime of opposed-flow flame spread are inarguably the most well-known formulas in the flame spread literature. Similar easy-to-use formulas are lacking in all other regimes of flame spread.
Subrata Bhattacharjee, Kazunori Wakai, Shuhei Takahashi   +2 more
exaly   +3 more sources

Correlation of Burning Rate with Spread Rate for Downward Flame Spread Over PMMA

Fire Technology, 2018
Burning rate of solid fuel and laminar flame spread rate are both well studied topics for flame spread in downward configuration. Yet, despite well-developed theories, not much experimental data is available to correlate the two. In this work, experiments are performed under ambient conditions in downward spread configuration for a wide range of ...
Luca Carmignani, Blake Rhoades, Subrata Bhattacharjee   +2 more
openaire   +2 more sources

Burn Angle and Its Implications on Flame Spread Rate, Mass Burning Rate, and Fuel Temperature for Downward Flame Spread over Thin PMMA

Combustion Science and Technology, 2019
A burn angle is defined as the acute angle subtended by the pyrolyzing surface with the virgin fuel surface and is an easily measurable overall characteristic parameter of flame spread, just like f...
L. Carmignani, S. Bhattacharjee
openaire   +2 more sources

Flame structure and flame spread rate over a solid fuel in partially premixed atmospheres

Proceedings of the Combustion Institute, 2011
Abstract We have investigated the downward flame spread over a thin solid fuel. Hydrogen, methane, or propane, included in the gaseous product of pyrolysis reaction, is added in the ambient air. The fuel concentration is kept below the lean flammability limit to observe the partially premixing effect. Both experimental and numerical studies have been
Kazuhiro Yamamoto, Yoshinori Ogata, Hiroshi Yamashita   +2 more
openaire   +2 more sources

Determination of the spread rate in opposed-flow flame spread over thick solid fuels in the thermal regime

Symposium (International) on Combustion, 1996
Limitations of the assumptions in the classic de Ris formula [1] for opposed-flow flame spread rate over thick fuels in the thermal regime are explored through numerical experiments in which the assumptions used in the original theory are eliminated one by one from the mathematical model.
Subrata Bhattacharjee, Jeff West, Robert A. Altenkirch   +2 more
openaire   +2 more sources

Opposed-flow flame spread in a circular duct of a solid fuel: Influence of channel height on spread rate

Proceedings of the Combustion Institute, 2002
The influence of channel height on flame spread in a circular duct of the solid fuel in an opposed-flow configuration was examined. Polymethylmethacrylate cylinders with a circular duct (diameter of 1, 2, or 3 mm) were used as fuel specimens, and both flame-spreading and stabilized combustion were observed.
Nozomu Hashimoto, Satoshi Watanabe, Harunori Nagata, Tsuyoshi Totani, Isao Kudo   +4 more
openaire   +2 more sources

Using cone calorimeter data for the prediction of upward flame spread rate

Journal of Thermal Analysis and Calorimetry, 2012
In a cone calorimeter, the specimen receives uniformly distributed irradiance from the cone heater. Producing a heating environment simulating the heating intensity in real fires, this apparatus consequently is capable of providing information of materials relevant to their fire performance. Several previous upward flame spread models utilized the data
Kuang-Chung Tsai
openaire   +2 more sources