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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">maplants</journal-id><journal-title-group><journal-title xml:lang="ru">Машины и установки: проектирование, разработка и эксплуатация</journal-title><trans-title-group xml:lang="en"><trans-title>Machines and Plants: Design and Exploiting</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2412-592X</issn><publisher><publisher-name>МОО "Стратегия объединения"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">maplants-30</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>ТЕПЛОВЫЕ ДВИГАТЕЛИ, ГИДРАВЛИЧЕСКИЕ МАШИНЫ, АППАРАТЫ ХОЛОДИЛЬНОЙ И КРИОГЕННОЙ ТЕХНИКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>HEAT ENGINES, HYDRAULIC MACHINES, REFRIGERATING AND CRYOGENIC EQUIPMENT</subject></subj-group></article-categories><title-group><article-title>Численное моделирование возникновения колебаний давления в термоакустическом преобразователе</article-title><trans-title-group xml:lang="en"><trans-title>Numerical Simulation of Pressure Fluctuations in the Thermo-acoustic Transducer</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>Угланов</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Uglanov</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="en"><p>Samara</p></bio><email xlink:type="simple">dmitry.uglanov@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>Некрасова</surname><given-names>С. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Nekrasova</surname><given-names>S. O.</given-names></name></name-alternatives><bio xml:lang="en"><p>Samara</p></bio><email xlink:type="simple">yhoji@yandex.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>Воробьев</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vorobiev</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="en"><p>Samara</p></bio><email xlink:type="simple">andrej-vorobev@yandex.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>Соколов</surname><given-names>Г. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sokolov</surname><given-names>G. V.</given-names></name></name-alternatives><bio xml:lang="en"><p>Samara</p></bio><email xlink:type="simple">jocker4@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Самарский государственный аэрокосмический университет им. академика С.П. Королёва</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Samara State Aerospace University n.a. S.P. Korolev</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>17</day><month>06</month><year>2016</year></pub-date><volume>0</volume><issue>6</issue><fpage>54</fpage><lpage>62</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Угланов Д.А., Некрасова С.О., Воробьев А.А., Соколов Г.В., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Угланов Д.А., Некрасова С.О., Воробьев А.А., Соколов Г.В.</copyright-holder><copyright-holder xml:lang="en">Uglanov D.A., Nekrasova S.O., Vorobiev A.A., Sokolov G.V.</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.maplants-journal.ru/jour/article/view/30">https://www.maplants-journal.ru/jour/article/view/30</self-uri><abstract><p>В статье рассмотрены особенности численного моделирования процесса возбуждения акустических колебаний в резонаторах с пористой вставкой (регенератором) для исследования процесса возбуждения термоакустических колебаний в контуре модели малоразмерного двигателя на пульсационной трубе. Предложена упрощенная конечно-элементная модель резонатора и определен гармонический закон распределения температуры на регенераторе. Приведены временные зависимости скорости и амплитуды давления для открытого конца резонатора, расчетное значение рабочей частоты процесса приблизительно равно значению частоты для заданной длины резонатора. Полученные результаты позволяют судить о правильности выбора схемы дискретизации в ESI CFD ACE для учета неравновесных процессов тепломассообмена в области регенератора. результаты численного моделирования необходимо расширить с целью учета реальных особенностей конструкции двигателя на пульсационной трубе. DOI: 10.7463/aplts.0615.0829643</p></abstract><trans-abstract xml:lang="en"><p>The article describes the features of numerical simulation of acoustic oscillation excitation in the resonators with a foam insert (regenerator) to study the excitation of thermo-acoustic oscillations in the circuit of small-sized engine model on the pulse tube.</p><p>The aim of this work is the numerical simulation of the emerging oscillations in thermoacoustic engine resonator at the standing wave. As a basis, the work takes a thermo-acoustic resonator model with the open end (without piston) developed in DeltaEC software. The precalculated operation frequency of the given resonator model, as a quarter of the wave resonator, is ν = 560 Hz.</p><p>The paper offers a simplified finite element resonator model and defines the harmonic law of the temperature distribution on regenerator. The time dependences of the speed and pressure amplitude for the open end of the resonator are given; the calculated value of the process operating frequency is approximately equal to the value of the frequency for a given length of the resonator. Key findings, as a result of study, are as follows:</p><sec><title>1</title><p>1. The paper shows a potential for using this ESI-CFD Advanced software to simulate the processes of thermal excitation of acoustic oscillations.</p></sec><sec><title>2</title><p>2. Visualization of turbulent flow fluctuations in the regenerator zone extends the analysis capability of gas-dynamic processes.</p></sec><sec><title>3</title><p>3. Difference between operating frequency of the process simulated by ESI-CFD Advanced and frequency value obtained by analytical methods is about 4%, which is evidence of the model applicability to study the acoustic parameters of thermo-acoustic transducers. Experimental results have proved these data.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>модель резонатора</kwd><kwd>пульсационная турбина</kwd><kwd>термоакустика</kwd><kwd>тепломассобмен</kwd></kwd-group><kwd-group xml:lang="en"><kwd>resonator model</kwd><kwd>pulse turbine</kwd><kwd>thermo-acoustics</kwd><kwd>heat and mass transfer</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">Yoshida T., Yazaki T., Futaki H., Hamaguchi K., Biwa T. Work flux density measurements in a pulse tube engine // Applied Physics Letters . 2009. Vol. 95. DOI: 10.1063/1.3187546</mixed-citation><mixed-citation xml:lang="en">Yoshida T., Yazaki T., Futaki H., Hamaguchi K., Biwa T. Work flux density measurements in a pulse tube engine. Applied Physics Letters, 2009, Vol. 95. 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