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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">firesmi</journal-id><journal-title-group><journal-title xml:lang="ru">Пожаровзрывобезопасность/Fire and Explosion Safety</journal-title><trans-title-group xml:lang="en"><trans-title>Pozharovzryvobezopasnost/Fire and Explosion Safety</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0869-7493</issn><issn pub-type="epub">2587-6201</issn><publisher><publisher-name>ФГБОУ ВО «Национальный исследовательский Московский государственный строительный университет»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22227/0869-7493.2022.31.06.6-12</article-id><article-id custom-type="elpub" pub-id-type="custom">firesmi-1175</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ПРОЦЕССЫ ГОРЕНИЯ, ДЕТОНАЦИИ И ВЗРЫВА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>COMBUSTION, DETONATION AND EXPLOSION PROCESSES</subject></subj-group></article-categories><title-group><article-title>Зависимость динамики горения полиэтилена  в 1-м3 камере от дисперсности частиц</article-title><trans-title-group xml:lang="en"><trans-title>Dependence of polyethylene combustion dynamics  in a 1 m3 chamber on particle size</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2586-8597</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Полетаев</surname><given-names>Н. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Poletaev</surname><given-names>N. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ПОЛЕТАЕВ Николай Львович, д-р техн. наук, ведущий научный сотрудник</p><p>143903, Московская обл., г. Балашиха, мкр. ВНИИПО, 12</p><p> РИНЦ ID: 1093620</p></bio><bio xml:lang="en"><p>Nikolay L. POLETAEV, Dr. Sci. (Eng.), Leading Researcher</p><p>VNIIPO, 12, Balashikha, Moscow Region, 143903</p><p>ID RISC:1093620</p></bio><email xlink:type="simple">nlpvniipo@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Всероссийский ордена «Знак Почета» научно-исследовательский институт противопожарной обороны Министерства Российской Федерации по делам гражданской обороны, чрезвычайным ситуациям и ликвидации последствий стихийных бедствий</institution><country>Россия</country></aff><aff xml:lang="en"><institution>All-Russian Research Institute for Fire Protection of Ministry of Russian Federation for Civil Defense, Emergencies and Elimination of Consequences of Natural Disasters</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>02</day><month>02</month><year>2023</year></pub-date><volume>31</volume><issue>6</issue><fpage>6</fpage><lpage>12</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Полетаев Н.Л., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Полетаев Н.Л.</copyright-holder><copyright-holder xml:lang="en">Poletaev N.L.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.fire-smi.ru/jour/article/view/1175">https://www.fire-smi.ru/jour/article/view/1175</self-uri><abstract><sec><title>Введение</title><p>Введение. Результаты стандартного исследования взрывоопасности аэровзвесей полиэтилена (АВП) показывают, как взвеси могут способствовать развитию теории турбулентного горения АВП. Например, анализ сведений о полидисперсности и значениях бедного предела горения АВП в кубометровой камере позволил определить для полиэтилена максимальный размер взрывоопасных частиц d*m,t ≈ 100 мкм (Полетаев, 2014). В настоящей работе получена связь между динамикой горения АВП в 1-м3 камере и средним размером  частиц взвеси, под которым понимается средний размер частиц ее взрывоопасной фракции d*50.</p></sec><sec><title>Исходные данные</title><p>Исходные данные. Использовались известные результаты исследования взрыва 28 образцов полиэтилена в 1-м3 камере. Непрерывные функции распределения частиц образцов по размерам, необходимые для расчета d*50, представлялись распределениями Розина – Раммлера.</p></sec><sec><title>Динамика горения</title><p>Динамика горения. Динамика турбулентного горения АВП в 1-м3 камере описывается максимальной скоростью выгорания аэровзвеси Ub. Расчет Ub производили по формуле (Kumar, 1992), предназначенной для газовоздушных смесей, путем подстановки в эту формулу параметров взрыва АВП.</p><p>Результат работы и его обсуждение. Приведен график зависимости комплекса d*50Ub от d*50. Усредненное значение комплекса (≈ 45 мкм · (м/с)) постоянно в диапазоне 40 мкм &lt; d*50 &lt; 90 мкм. Последнее свойственно для произведения размера частиц на нормальную скорость ламинарного пламени в жидких аэрозолях (Myers, 1986), что говорит о подобии влияния дисперсности частиц на динамику турбулентного и ламинарного горения упомянутых гетерогенных смесей.</p></sec><sec><title>Выводы</title><p>Выводы. Дисперсность взрывоопасного полидисперсного образца полиэтилена определяется средним размером частиц взрывоопасной фракции образца d*50.</p><p>Подобие закономерностей горения указывает на близость механизмов распространения турбулентного пламени в АВП и ламинарного пламени в жидких аэрозолях.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Introduction</title><p>Introduction. The results of a standard study on the explosion hazard of polyethylene air suspensions (PES) can contribute to the theory of turbulent combustion. For example, analysis of polydispersity data and values of the PES lean combustion limit in a 1 m3 chamber helped to identify the maximum size of explosive particles d*m,t ≈ 100 µm (Poletaev, 2014). In this work, a relationship was obtained between the dynamics of PES combustion in a 1 m3 chamber and the average particle size of the suspension, which is understood as the average particle size of its explosive fraction d*50.</p></sec><sec><title>Initial data</title><p>Initial data. Well-known findings of a study on the explosion of 28 polyethylene specimens in a 1 m3 chamber were used. Continuous functions of specimen particles distribution by size, necessary for calculating d*50, were represented using the Rosin-Rammler distribution.</p></sec><sec><title>Combustion dynamics</title><p>Combustion dynamics. The dynamics of PES turbulent combustion in a 1 m3 chamber is described by the maximum rate of air suspension burnout Ub. Ub was calculated according to the formula (Kumar, 1992) intended for gas-air mixtures by substituting PES explosion parameters into this formula.</p><p>Results and its discussion. The graph, describing the dependence of the complex d*50Ub on d*50, is provided. The averaged value of the complex (≈ 45 µm · (m/s)) is constant in the range 40 µm &lt; d*50 &lt; 90 µm. The latter is typical for the product of the particle size and the normal velocity of laminar flame in liquid aerosols (Myers, 1986), which indicates similarity between the effect of particle dispersion and dynamics of turbulent and laminar combustion of the aforementioned heterogeneous mixtures.</p></sec><sec><title>Conclusions</title><p>Conclusions. The dispersive capacity of an explosive polydisperse polyethylene specimen is determined by the average particle size of the explosive fraction of the specimen d*50. The similarity of combustion patterns indicates the proximity of propagation mechanisms typical for turbulent flame, typical for PES, and laminar flame, typical for liquid aerosols.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>пыль полиэтилена</kwd><kwd>взрывоопасная фракция</kwd><kwd>полидисперсность</kwd><kwd>турбулентность</kwd><kwd>механизм горения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>polyethylene dust</kwd><kwd>explosive fraction</kwd><kwd>polydispersity</kwd><kwd>turbulence</kwd><kwd>combustion mechanism</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Eckhoff R.K. Dust explosions in the process industries 3rd ed. Boston : Gulf Professional Publishing/Elsevier, 2003. 720 p.</mixed-citation><mixed-citation xml:lang="en">Eckhoff R.K. Dust explosions in the process industries. 3rd ed. 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