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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">isplta</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Санкт-Петербургской лесотехнической академии</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestia Sankt-Peterburgskoj lesotehniceskoj akademii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2079-4304</issn><issn pub-type="epub">2658-5871</issn><publisher><publisher-name>СПбГЛТУ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21266/2079-4304.2024.249.166-176</article-id><article-id custom-type="elpub" pub-id-type="custom">isplta-332</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>ТЕХНОЛОГИЯ И ОБОРУДОВАНИЕ ЛЕСОЗАГОТОВОК</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TECHNOLOGY AND EQUIPMENT OF LOGGING INDUSTRIES</subject></subj-group></article-categories><title-group><article-title>Методологические особенности описания процессов теплопроводности</article-title><trans-title-group xml:lang="en"><trans-title>Methodological features of the description of thermal conductivity processes</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0009-6113-7397</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Куликов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kulikov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Куликов Александр Александрович - заведующий кафедрой промышленной энергетики СПбГЛТУ им. С.М. Кирова, старший научный сотрудник, кандидат технических наук.</p><p>194021, Институтский пер., д. 5, Санкт-Петербург</p><p>Author ID 967857</p></bio><bio xml:lang="en"><p>Alexander А. Kulikov - PhD (Technical), Associate Professor, Head of the Department of Industrial Energy, St. Petersburg State Forest Technical University.</p><p>Institute per. 5, St. Petersburg, 194021</p><p>Author ID 967857</p></bio><email xlink:type="simple">alalkulikov@mail.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/0009-0009-4068-6741</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иванова</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanova</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Иванова Ирена Викторовна - доцент кафедры промышленной энергетики СПбГЛТУ им. С.М. Кирова, кандидат технических наук, доцент.</p><p>194021, Институтский пер., д. 5, Санкт-Петербург</p><p>Author ID 955471</p></bio><bio xml:lang="en"><p>Irena V. Ivanova - PhD (Technical), Associate Professor of the department of Industrial Energy, St. Petersburg State Forest Technical University.</p><p>Institute per. 5, St. Petersburg, 194021</p><p>Author ID 955471</p></bio><email xlink:type="simple">irenalta@mail.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/0009-0007-3367-4916</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дюкова</surname><given-names>И. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Dyukova</surname><given-names>I. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дюкова Ирина Николаевна - старший преподаватель кафедры промышленной энергетики СПбГЛТУ им. С.М. Кирова.</p><p>194021, Институтский пер., д. 5, Санкт-Петербург</p><p>Author ID 961143</p></bio><bio xml:lang="en"><p>Irina N. Dyukova - Senior Lecturer of the department of Industrial Energy, St. Petersburg State Forest Technical University.</p><p>Institute per. 5, St. Petersburg, 194021</p><p>Author ID 961143</p></bio><email xlink:type="simple">i.n.dyukova@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный лесотехнический университет имени С.М. Кирова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>St. Petersburg State Forest Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>08</day><month>08</month><year>2024</year></pub-date><volume>0</volume><issue>249</issue><fpage>166</fpage><lpage>176</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Куликов А.А., Иванова И.В., Дюкова И.Н., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Куликов А.А., Иванова И.В., Дюкова И.Н.</copyright-holder><copyright-holder xml:lang="en">Kulikov A.A., Ivanova I.V., Dyukova I.N.</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://izvestiya-lta.spbftu.ru/jour/article/view/332">https://izvestiya-lta.spbftu.ru/jour/article/view/332</self-uri><abstract><p>В физической модели процесса теплопроводности анализируется роль скорости, с которой в сплошной среде распространяется энергия. На базе общего определения вектора плотности энергии даётся основное определение вектора плотности теплового потока и выводится формула для определения объёмной плотности энергии, переносимой за счёт теплопроводности. Для общего случая выводится формула расчёта распределения локальной поверхностной плотности теплового потока на произвольной поверхности, принадлежащей телу, при известном поле вектора плотности теплового потока.</p></abstract><trans-abstract xml:lang="en"><p>In the physical model, the role of the velocity at which energy propagates in a continuous medium is analyzed in the process of thermal conductivity. Based on the general definition of the energy density vector, the basic definition of the heat flux density vector is given and a formula is derived for determining the volumetric energy density transferred due to thermal conductivity. For the general case, a formula is derived for calculating the distribution of the local surface heat flux density on an arbitrary surface belonging to a body with a known field of the heat flux density vector.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>теплообмен</kwd><kwd>теплопроводность</kwd><kwd>вектор плотности теплового потока</kwd><kwd>скорость распространения энергии</kwd></kwd-group><kwd-group xml:lang="en"><kwd>heat transfer</kwd><kwd>thermal conductivity</kwd><kwd>heat flux density vector</kwd><kwd>energy propagation velocity</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">Бронштейн И.Н., Семендяев К.А. Справочник по математике. М.: Гостехтеоретиздат, 1953. 608 с.</mixed-citation><mixed-citation xml:lang="en">Bronstein I.N., Semendyaev K.A. Handbook of Mathematics. M.: Gostekhteoretizdat, 1953. 608 p. 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