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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">agroengineering</journal-id><journal-title-group><journal-title xml:lang="ru">Агроинженерия</journal-title><trans-title-group xml:lang="en"><trans-title>Agricultural Engineering (Moscow)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2687-1149</issn><issn pub-type="epub">2687-1130</issn><publisher><publisher-name>РГАУ-МСХА</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26897/2687-1149-2021-5-13-19</article-id><article-id custom-type="elpub" pub-id-type="custom">agroengineering-126</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>ТЕХНИКА И ТЕХНОЛОГИИ АПК</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>FARM MACHINERY AND TECHNOLOGIES</subject></subj-group></article-categories><title-group><article-title>ПСЕВДООЖИЖЕНИЕ СЕМЯН ПРОСА И ГОРОХА</article-title><trans-title-group xml:lang="en"><trans-title>FLUIDIZATION OF MILLET AND PEA SEEDS</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бабичева</surname><given-names>ЕЛЕНА ЛЕОНИДОВНА</given-names></name><name name-style="western" xml:lang="en"><surname>Babicheva</surname><given-names>ELENA L.</given-names></name></name-alternatives><email xlink:type="simple">ebabicheva@rgau-msha.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3129-8562</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рудобашта</surname><given-names>СТАНИСЛАВ ПАВЛОВИЧ</given-names></name><name name-style="western" xml:lang="en"><surname>Rudobashta</surname><given-names>STANISLAV P.</given-names></name></name-alternatives><email xlink:type="simple">rudobashta@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сидельников</surname><given-names>ИВАН ИВАНОВИЧ</given-names></name><name name-style="western" xml:lang="en"><surname>Sidelnikov</surname><given-names>IVAN I.</given-names></name></name-alternatives><email xlink:type="simple">paht@land.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Российский государственный аграрный университет - МСХА имени К.А. Тимирязева</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian State Agrarian University - Moscow Timiryazev Agricultural Academy</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Московский политехнический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow Polytechnic University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>07</day><month>11</month><year>2021</year></pub-date><volume>0</volume><issue>5</issue><fpage>13</fpage><lpage>19</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Бабичева Е.Л., Рудобашта С.П., Сидельников И.И., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Бабичева Е.Л., Рудобашта С.П., Сидельников И.И.</copyright-holder><copyright-holder xml:lang="en">Babicheva E.L., Rudobashta S.P., Sidelnikov I.I.</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://agroengineering.timacad.ru/jour/article/view/126">https://agroengineering.timacad.ru/jour/article/view/126</self-uri><abstract><p>Одним из способов конвективной сушки зернистых материалов, позволяющим интенсифицировать процесс, является их сушка в аппарате с псевдоожиженым слоем. Важными преимуществами сушилок с псевдоожиженным слоем являются равномерность сушки всех частиц, находящихся в слое, и легкость загрузки и выгрузки материала. Целью работы являлось экспериментальное исследование гидродинамики псевдоожиженного слоя семян проса и гороха и определение на основе этих данных первой критической скорости (скорости начала псевдоожижения). В эксперименте исследованы семена малого и большого размера (просо и горох). По полученным экспериментальным данным построены кривые псевдоожижения ∆Р = f(v) для проса и гороха, по которым определены первые критические скорости псевдоожижения (0,73 м/с для проса и 1,68 м/с для гороха). Найденные экспериментально значения первой критической скорости псевдоожижения сопоставлены со значениями, рассчитанными по уравнениям О.М. Тодеса, Вэнь и Ю. Грейс. Показано, что все указанные уравнения обеспечивают приемлемую точность вычислений, но точность расчетов по уравнению О.М. Тодеса несколько выше, поэтому она рекомендована авторами для инженерных расчетов. Значение первой критической скорости псевдоожижения, рассчитанное по формуле О.М. Тодеса, для проса составило 0,69 м/с, для гороха – 1,60 м/с. Исследования показали хорошую сходимость расчетных и экспериментальных данных по первым критическим скоростям псевдоожижения (относительная погрешность для проса составила 5,5%, для гороха – 4,8%), что обусловлено правильной геометрической формой исследованных семян, близкой к сферической. Доказана применимость формулы О.М. Тодеса для расчета первой критической скорости псевдоожижения исследуемых семян в процессе сушки.</p></abstract><trans-abstract xml:lang="en"><p>One of the convective drying methods used to intensify the process of drying granular materials is the use of a device with a fluidized bed. The essential advantages of fluidized bed dryers are the uniform drying of all the particles in the bed and the ease of loading and unloading the material. The study goal was to conduct an experimental study of the hydrodynamics of the fluidized bed of millet and pea seeds and the determination of the first critical velocity (the rate of the beginning of fluidization) based on these data. The authors took small (millet) and large (pea) seeds for the experiment. Based on the experimental data obtained, they constructed pseudo-liquefaction curves - AP = f (v) for millet and peas to determine the first critical fluidization rates (0.73 m/s for millet and 1.68 m/s for peas). The experimentally found values of the first critical fluidization rate were compared with the values calculated by the equations of O.M. Todes, Wen and Yu, and Grace. The study showed that all the equations provide an acceptable accuracy of calculations, but the accuracy of using the equation of O.M. Todes is somewhat higher. Therefore it can be primarily recommended for engineering analysis. The first critical fluidization rates, calculated according to the formula of O.M. Todes, were, accordingly: 0.69 m/s for millet and 1.60 m/s for pea. The calculation and experimental data on the first critical fluidization rates for millet and peas agree satisfactorily (the relative error for millet is 5.5%, for peas - 4.8%). The sufficiently high accuracy of the first critical fluidization rates is explained by the correct geometric shape of the studied seeds, which is close to spherical. Therefore, the first critical fluidization speed of the studied seed material can be determined using the formula of O.M. Todes.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>псевдоожижение</kwd><kwd>скорость</kwd><kwd>семена проса</kwd><kwd>семена гороха</kwd><kwd>сушка</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fluidization</kwd><kwd>speed</kwd><kwd>millet seeds</kwd><kwd>pea seeds</kwd><kwd>drying</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">Svinarev V.A., Planovskii A.N., Rudobashta S.P. et al. Study of mass transfer between a spherical body and a turbulent gas stream. Journal of Engineering Physics, 1970; 12 (1): 5-7. https://doi.org/10.1007/BF00829406</mixed-citation><mixed-citation xml:lang="en">Svinarev V.A., Planovskii A.N., Rudobashta S.P. et al. Study of mass transfer between a spherical body and a turbulent gas stream. 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