Results 231 to 240 of about 709,423 (312)
Some of the next articles are maybe not open access.
Scaling of a small scale burner fire whirl
Combustion and Flame, 2016Abstract The behavior of a fire whirl generated using a burner is examined using Particle Image Velocimetry. Swirl is generated using two staggered cylinder halves that surround the burner. The unsteadiness of the whirl is characterized, and the ensemble-averaged mean velocity profiles are obtained based on the instantaneous whirl position.
K.A. Hartl, A.J. Smits
openaire +2 more sources
Annual Review of Fluid Mechanics, 2018
Fire whirls present a powerful intensification of combustion, long studied in the fire research community because of the dangers they present during large urban and wildland fires. However, their destructive power has hidden many features of their formation, growth, and propagation.
Ali Tohidi +2 more
openaire +2 more sources
Fire whirls present a powerful intensification of combustion, long studied in the fire research community because of the dangers they present during large urban and wildland fires. However, their destructive power has hidden many features of their formation, growth, and propagation.
Ali Tohidi +2 more
openaire +2 more sources
International Journal of Numerical Methods for Heat & Fluid Flow, 2022
Purpose The purpose of this paper is to investigate the development process of the fire whirl in the fixed-frame facility and focus on the impacts of the fire whirl’s vortex core on the formation and flame structure of the fire whirl.
Xiang Fang +4 more
semanticscholar +1 more source
Purpose The purpose of this paper is to investigate the development process of the fire whirl in the fixed-frame facility and focus on the impacts of the fire whirl’s vortex core on the formation and flame structure of the fire whirl.
Xiang Fang +4 more
semanticscholar +1 more source
Flow Field around a Fire Whirl over Line Fire
The Proceedings of the Thermal Engineering Conference, 2020Yuto Iga, Kazunori Kuwana
openaire +2 more sources
Proceedings of the Combustion Institute, 2011
Abstract Air entrainment, leading to strong fire whirls, is commonly thought to be caused by the buoyant rise of the hot combustion products under the influence of gravity. We have, however, created in the laboratory steady, axisymmetric strong fire whirls with axes inclined 30° from the vertical orientation, whirls which model an inclined fire whirl,
Keng Hoo Chuah +3 more
openaire +1 more source
Abstract Air entrainment, leading to strong fire whirls, is commonly thought to be caused by the buoyant rise of the hot combustion products under the influence of gravity. We have, however, created in the laboratory steady, axisymmetric strong fire whirls with axes inclined 30° from the vertical orientation, whirls which model an inclined fire whirl,
Keng Hoo Chuah +3 more
openaire +1 more source
Symposium (International) on Combustion, 1967
A fire whirl from a liquid-fuel pool (acetone) is formed at the center of a rotating screen which imparts a controlled angular momentum to the ambient air. Measurements show that outside of the core the fluid motion is that of a free vortex. A hot-wire method of measurement of the radial temperature distribution is developed.
Howard W. Emmons, Shuh-Jing Ying
openaire +1 more source
A fire whirl from a liquid-fuel pool (acetone) is formed at the center of a rotating screen which imparts a controlled angular momentum to the ambient air. Measurements show that outside of the core the fluid motion is that of a free vortex. A hot-wire method of measurement of the radial temperature distribution is developed.
Howard W. Emmons, Shuh-Jing Ying
openaire +1 more source
Fire Safety Journal, 2008
A fire whirl in an open space can cause devastating damage as was experienced in Hifukusho-ato, Tokyo, after the Great Kanto Earthquake in 1921. To understand the generation mechanism of the open-space fire whirls, 1/1000th scale-model experiments were conducted in a large, low-speed open-loop wind tunnel.
Kazunori Kuwana +3 more
openaire +1 more source
A fire whirl in an open space can cause devastating damage as was experienced in Hifukusho-ato, Tokyo, after the Great Kanto Earthquake in 1921. To understand the generation mechanism of the open-space fire whirls, 1/1000th scale-model experiments were conducted in a large, low-speed open-loop wind tunnel.
Kazunori Kuwana +3 more
openaire +1 more source
Combustion Theory and Modelling, 2000
A numerical investigation of swirling fire plumes is pursued to understand how swirl alters the plume dynamics and combustion. One example is the ‘fire whirl’ which is known to arise naturally during forest fires. This buoyancy-driven fire plume entrains ambient fluid as heated gases rise. Vorticity associated with a mechanism such as wind shear can be
Francine Battaglia +3 more
openaire +1 more source
A numerical investigation of swirling fire plumes is pursued to understand how swirl alters the plume dynamics and combustion. One example is the ‘fire whirl’ which is known to arise naturally during forest fires. This buoyancy-driven fire plume entrains ambient fluid as heated gases rise. Vorticity associated with a mechanism such as wind shear can be
Francine Battaglia +3 more
openaire +1 more source
Wildfires and the generation of fire whirls
Combustion and Flame, 2022Abstract The paper first reviews the mode of generation of fire whirls, their properties, and operational regimes, under well-controlled experimental conditions. The situation is different with wildfires. These are uncontrolled and less well understood. A modified analytical approach is described for these conditions.
Adriana Palacios, Derek Bradley
openaire +1 more source
Combustion and Flame, 1979
Abstract An analytical model was developed of the radially averaged fluid mechanical properties of the fire whirl core, including the coupling between the fire whirl core flow, the ground boundary layer, and the fuel heat transfer. A parameter related to the ground boundary layer radial and tangential velocity profiles, necessary for obtaining ...
A. Muraszew, J.B. Fedele, W.C. Kuby
openaire +1 more source
Abstract An analytical model was developed of the radially averaged fluid mechanical properties of the fire whirl core, including the coupling between the fire whirl core flow, the ground boundary layer, and the fuel heat transfer. A parameter related to the ground boundary layer radial and tangential velocity profiles, necessary for obtaining ...
A. Muraszew, J.B. Fedele, W.C. Kuby
openaire +1 more source