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Kazunori Kuwana
Yamagata University
Premixed flameChemistryMaterials scienceFlame speedFire whirl
85Publications
17H-index
929Citations
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Publications 92
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#1Tomomi Sasaki (YU: Yamagata University)H-Index: 1
#2Kazunori Kuwana (YU: Yamagata University)H-Index: 17
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#1Hiroyuki Iizuka (YU: Yamagata University)H-Index: 1
#2Kazunori Kuwana (YU: Yamagata University)H-Index: 17
Last. Shigetoshi Yazaki (Meiji University)H-Index: 8
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#1Kazunori Kuwana (YU: Yamagata University)H-Index: 17
#2Kozo Saito (UK: University of Kentucky)H-Index: 31
Last. Forman A. Williams (UCSD: University of California, San Diego)H-Index: 54
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ABSTRACTA model is proposed for estimating how fire whirls may begin to move along line fires and the velocities at which they may propagate steadily against the direction of the prevailing wind, i...
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#1Wookyung Kim (Hiroshima University)H-Index: 8
#2Takuma Endo (Hiroshima University)H-Index: 19
Last. Ritsu Dobashi (UTokyo: University of Tokyo)H-Index: 22
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ABSTRACTIn accidental gas explosions, flame acceleration owing to cellular instabilities such as diffusional–thermal instability and Darrieus–Landau instability can cause considerable damages, for example, the formation of a strong blast wave. In particular, as the flame scale increases, Darrieus–Landau instability, caused by a density jump, progressively dominates in the flame acceleration. In this study, we experimentally investigated the growth and wrinkling owing to Darrieus–Landau instabili...
1 CitationsSource
#1Koshi Funashima (YU: Yamagata University)
#2Ayaka Masuyama (YU: Yamagata University)
Last. Genichiro Kushida (Aichi Institute of Technology)H-Index: 8
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Abstract This paper presents results of experimental and numerical investigations of flame spread along a thin solid in an opposed oxygen flow in a narrow channel. Experiments are conducted at various oxygen flow speeds and gas-phase heights. For a low gas-phase height or a low oxygen flow speed, a large portion of solid is left unburned, and the burned region forms a finger-like pattern. It is noted that both the flame spread velocity and the fraction burned increase with an increase in the gas...
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#1Xiepeng Sun (USTC: University of Science and Technology of China)H-Index: 5
#2Xiaolei Zhang (USTC: University of Science and Technology of China)H-Index: 13
Last. Kazunori Kuwana (YU: Yamagata University)H-Index: 17
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Abstract The temperature evolution inside a fire compartment with an opening under external sideward wind (parallel to opening) is investigated in this paper. Phenomena associated with this scenario are not known and have not been previously studied. An experimental model consisting of a fire compartment (0.4 m cubed) with an opening of various dimensions and a vertical facade wall was employed under external sideward wind ranging from 0 to 2 m/s. A propane porous burner of various heat release ...
6 CitationsSource
#1Rikiya Yamada (YU: Yamagata University)
#2Kazunori Kuwana (YU: Yamagata University)H-Index: 17
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#1Maika Goto (YU: Yamagata University)
#2Kazunori Kuwana (YU: Yamagata University)H-Index: 17
Last. Shigetoshi Yazaki (Meiji University)H-Index: 8
view all 4 authors...
Abstract This paper presents experimental observations and a theory of near-floor flame spread along a thin solid. Experiments were conducted by igniting at the center of a thin circular paper sheet that was held at a given height h from the bottom floor. It was observed that the flame front was corrugated and often broke into separated structures when h was small, and highly disturbed burned areas were obtained for h = 2 mm; flame spread was not possible at h = 1 mm. When h was larger than abou...
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#1Kazunori Kuwana (YU: Yamagata University)H-Index: 17
#2Genichiro Kushida (Aichi Institute of Technology)H-Index: 8
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