Search Results - "Legros, Guillaume"

On the effects of opposed flow conditions on non-buoyant flames spreading over polyethylene-coated wires – Part II: Soot oxidation quenching and smoke release by Guibaud, Augustin, Citerne, Jean-Marie, Consalvi, Jean-Louis, Legros, Guillaume

“…Smoke release in the limited volume of a spaceship poses a major threat to the life of astronauts in long range exploration missions. If the absence of buoyant…”
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Experimental study on downward/opposed flame spread and extinction over electric wires in partial gravity environments by Konno, Yusuke, Li, Yutao, Citerne, Jean-Marie, Legros, Guillaume, Guibaud, Augustin, Hashimoto, Nozomu, Fujita, Osamu

“…Downward/opposed flame spread over laboratory wire samples under varied gravity conditions were investigated in the range from 0 G to 1 G. Reduced gravity…”
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Flame spread: Effects of microgravity and scale by Urban, David L., Ferkul, Paul, Olson, Sandra, Ruff, Gary A., Easton, John, T'ien, James S., Liao, Ya-Ting T., Li, Chengyao, Fernandez-Pello, Carlos, Torero, Jose L., Legros, Guillaume, Eigenbrod, Christian, Smirnov, Nickolay, Fujita, Osamu, Rouvreau, Sébastien, Toth, Balazs, Jomaas, Grunde

“…For the first time, a large-scale flame spread experiment was conducted inside an orbiting spacecraft to study the effects of microgravity and scale and to…”
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Effect of ambient pressure on the extinction limit for opposed flame spread over an electrical wire in microgravity by Nagachi, Masashi, Citerne, Jean-Marie, Dutilleul, Hugo, Guibaud, Augustin, Jomaas, Grunde, Legros, Guillaume, Hashimoto, Nozomu, Fujita, Osamu

“…Parabolic flight experiments were carried out to investigate the effect of ambient pressure on the extinction limit for opposed flame spread over an electric…”
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Effect of Ignition Condition on the Extinction Limit for Opposed Flame Spread Over Electrical Wires in Microgravity by Nagachi, Masashi, Mitsui, Fumiya, Citerne, Jean-Marie, Dutilleul, Hugo, Guibaud, Augustin, Jomaas, Grunde, Legros, Guillaume, Hashimoto, Nozomu, Fujita, Osamu

“…Flame spread over wire insulation plays a crucial role in spacecraft fire safety. To quantify the effect of the initial ignition condition on the limiting…”
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Experimental Evaluation of Flame Radiative Feedback: Methodology and Application to Opposed Flame Spread Over Coated Wires in Microgravity by Guibaud, Augustin, Citerne, Jean-Marie, Consalvi, Jean-Louis, Fujita, Osamu, Torero, Jose, Legros, Guillaume

“…The objective of this work is to quantify for the first time soot-related radiative heat transfer in opposed flow flame spread in microgravity. This article…”
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Foreword by Colin, Catherine, Legros, Guillaume

“…As the editors of this special issue, we are delighted to introduce a selection of recent achievements associated with the French Research Network Groupement…”
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Foreword by Colin, Catherine, Legros, Guillaume

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New experimental method for the simultaneous determination of concentration and size profiles of condensed combustion products around a burning aluminum droplet by Keck, Hugo, Chauveau, Christian, Legros, Guillaume, Gallier, Stany, Halter, Fabien

“…When an aluminum particle burns in the diffusive regime, a cloud of nanometric particles of its primary oxide, alumina, is formed around the droplet…”
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Thermal structure of an aluminum-methane/air hybrid flame by Jeanjean, Samuel, Bertsch, Justin, Legros, Guillaume, Chauveau, Christian, Halter, Fabien

“…•Le methane content in methane/aluminum flame change the structure of the flame.•Three reaction zones have been detected thanks to 2-color pyrometry.•The…”
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Fire safety in spacecraft: Past incidents and Deep Space challenges by Guibaud, Augustin, Legros, Guillaume, Consalvi, Jean-Louis, Torero, Jose

“…Fire safety is listed among the areas of prime concern for inhabited space exploration. The naturally high risk of an accidental fire has to be carefully…”
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Predicting simultaneously fields of soot temperature and volume fraction in laminar sooting flames from soot radiation measurements - a convolutional neural networks approach by Wu, Yi, Li, Zhen, Wang, Qianlong, Legros, Guillaume, Li, Chaomin, Yan, Zhiwen

“…An original convolutional neural network, i.e. U-net approach, has been designed to retrieve simultaneously local soot temperature and volume fraction fields…”
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Hybrid Eulerian-Lagrangian method for soot modelling applied to ethylene-air premixed flames by Dellinger, Nicolas, Bertier, Nicolas, Dupoirieux, Francis, Legros, Guillaume

“…Soot formation has become an important issue in the design of gas turbine combustors due to its environmental impact and its contribution to radiative heat…”
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Cyclic pattern along the downward flame spread over cylindrical samples in partial gravity by Li, Yutao, Guibaud, Augustin, Citerne, Jean-Marie, Seon, Thomas, Consalvi, Jean-Louis, Legros, Guillaume

“…Downward flame spread over thin electrical wires is investigated at reduced gravity. The wire is made of a Nickel/Chrome (NiCr) core coated with Low Density…”
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On the effects of opposed flow conditions on non-buoyant flames spreading over polyethylene-coated wires – Part II: Soot oxidation quenching and smoke release by Guibaud, Augustin, Citerne, Jean-Marie, Consalvi, Jean-Louis, Legros, Guillaume

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Far-field signature of fire in low gravity: Influence of ambient oxygen content and pressure on size distribution of smoke particles by Li, Yutao, Guibaud, Augustin, Citerne, Jean-Marie, Renard, Jean-Baptiste, Legros, Guillaume

“…Fire detection in space habitats is hindered by the unique characteristics of smoke particles released by weakly buoyant flames. For the first time,…”
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On the effects of opposed flow conditions on non-buoyant flames spreading over polyethylene-coated wires – Part I: Spread rate and soot production by Guibaud, Augustin, Citerne, Jean-Marie, Consalvi, Jean-Louis, Legros, Guillaume

“…In microgravity, the extended time scales associated with the absence of buoyancy lead to peculiar flame features that are likely to affect the risk associated…”
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A semi-global reaction mechanism for the thermal decomposition of low-density polyethylene blended with ammonium polyphosphate and pentaerythritol by Coimbra, Alain, Sarazin, Johan, Bourbigot, Serge, Legros, Guillaume, Consalvi, Jean-Louis

“…A semi-global reaction mechanism has been developed to capture the decomposition of a polymer, i.e. low-density polyethylene (LDPE) that contains a…”
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Effects of oxygen depletion on soot production, emission and radiative heat transfer in opposed-flow flame spreading over insulated wire in microgravity by Consalvi, Jean-Louis, Guibaud, Augustin, Coimbra, Alain, Citerne, Jean-Marie, Legros, Guillaume

“…The main objective of this article is to investigate experimentally and numerically the effects of reduced-oxygen contents on the soot production and emission…”
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Impacts of oxygenated compounds concentration on sooting propensities and soot oxidative reactivity: Application to Diesel and Biodiesel surrogates by Abboud, Johnny, Schobing, Julie, Legros, Guillaume, Bonnety, Jérôme, Tschamber, Valerie, Brillard, Alain, Leyssens, Gontrand, Lauga, Vincent, Iojoiu, Eduard Emil, Da Costa, Patrick

“…[Display omitted] •Adding oxygenated compounds on a surrogate Diesel decreases the sooting tendencies of fuels.•« Biosoot » present smaller particle size…”
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