<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">donstu</journal-id><journal-title-group><journal-title xml:lang="en">Advanced Engineering Research (Rostov-on-Don)</journal-title><trans-title-group xml:lang="ru"><trans-title>Advanced Engineering Research (Rostov-on-Don)</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2687-1653</issn><publisher><publisher-name>Don State Technical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.12737/20212</article-id><article-id custom-type="elpub" pub-id-type="custom">donstu-93</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="en"><subject>MECHANICS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МЕХАНИКА</subject></subj-group></article-categories><title-group><article-title>Study on effect of some geometric transformations of the trailing edge of airfoils on their aerodynamic parameters</article-title><trans-title-group xml:lang="ru"><trans-title>Изучение влияния некоторых геометрических преобразований задней кромки профилей на их аэродинамические характеристики</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>Мещеряков</surname><given-names>Константин Игоревич</given-names></name><name name-style="western" xml:lang="en"><surname>Mescheryakov</surname><given-names>Konstantin I.</given-names></name></name-alternatives><email xlink:type="simple">m.keyran@gmail.com</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>Сумбатян</surname><given-names>Межлум Альбертович</given-names></name><name name-style="western" xml:lang="en"><surname>Sumbatyan</surname><given-names>Mezhlum A.</given-names></name></name-alternatives><email xlink:type="simple">sumbatma@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Южный федеральный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Southern Federal University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>30</day><month>09</month><year>2016</year></pub-date><volume>16</volume><issue>3</issue><fpage>17</fpage><lpage>22</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Mescheryakov K.I., Sumbatyan M.A., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Мещеряков К.И., Сумбатян М.А.</copyright-holder><copyright-holder xml:lang="en">Mescheryakov K.I., Sumbatyan M.A.</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.vestnik-donstu.ru/jour/article/view/93">https://www.vestnik-donstu.ru/jour/article/view/93</self-uri><abstract><p>The work objective is to evaluate how the geometric transformations of the trailing edge of some airfoils affect the aerodynamic characteristics. Such transformations as the trailing edge thickening and rounding are considered. The performance of Wortmann FX 63-137, NACA 23024 и Clark Y is calculated. The effect of the trailing edge changes on their aerodynamic performance at Reynolds numbers from 200,000 to 1,000,000 is assessed. It is shown that the thickening of the trailing edge increases the drag coefficient up to some Reynolds number dependent on the airfoil, and thereafter it reduces. At that the increase of the lift coefficient is observed. The rounding of the trailing edge reduces both the lift and drag forces, and it can lead to the improvement of the airfoil lift-to-drag ratio for certain angles of attack. The data obtained can be used in the manufacture of blades with the profiles discussed.</p></abstract><trans-abstract xml:lang="ru"><p>Цель работы - определить, каким образом геометрические преобразования задней кромки профилей влияют на аэродинамические параметры. Рассмотрены такие преобразования, как утолщение задней кромки и ее закругление. Проведен расчет характеристик профилей Wortmann FX 63-137, NACA 23024 и Clark Y, оценено влияние преобразований задней кромки на их аэродинамические характеристики при числах Рейнольдса от 200000 до 1000000. Показано, что утолщение задней кромки приводит к увеличению коэффициента силы сопротивления до достижения некоторого зависящего от профиля числа Рейнольдса, после чего происходит его уменьшение. При этом наблюдается увеличение коэффициента подъемной силы. Закругление задней кромки приводит к уменьшению как подъемной силы, так и силы сопротивления и может способствовать улучшению аэродинамического качества профиля при некоторых углах атаки. Полученные данные могут быть применены при производстве лопастей с использованием рассмотренных профилей.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>крыльевой профиль</kwd><kwd>преобразования задней кромки</kwd><kwd>аэродинамические характеристики</kwd><kwd>коэффициент подъемной силы</kwd><kwd>коэффициент лобового сопротивления</kwd><kwd>airfoil</kwd><kwd>trailing edge transformations</kwd><kwd>aerodynamic parameters</kwd><kwd>lift coefficient</kwd><kwd>head drag coefficient</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">Минайлос, А. Влияние толщины профиля и задней кромки на поле течения и аэродинамические характеристики треугольного крыла малого удлинения при числе М = 3 / А. Минайлос // Ученые записки ЦАГИ. - 1976. - Т. 7, №. 5. - C. 9-14.</mixed-citation><mixed-citation xml:lang="en">Minaylos, А. Vliyanie tolshchiny profilya i zadney kromki na pole techeniya i aerodinamicheskie kharakteristiki treugol'nogo kryla malogo udlineniya pri chisle M  = 3. [Effect of profile thickness and trailing edge on flow field and aerodynamic characteristics of the narrow delta wing at M number = 3.] TsAGI Science Journal,  1976, vol. 7, no. 5, pp. 9–14 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Thompson B. E. Flow-around airfoils with blunt, round, and sharp trailing edges / B.-E. Thompson, J.-H. Whitelaw // Journal of aircraft. - 1988. - Vol. 25, iss. 4. - P. 334-342.</mixed-citation><mixed-citation xml:lang="en">Thompson, B.E., Whitelaw, J.-H. Flow-around airfoils with blunt, round, and sharp trailing edges. Journal of aircraft, 1988, vol. 25, iss. 4, pp. 334–342.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Van Dam, C.-P. Trailing edge modifications for flatback airfoils / C.-P. Van Dam, D.-L. Kahn, D.-E. Berg ; Sandia National Laboratories. - Albuquerque ; Livermore : Sandia National Laboratories ; Wind Energy Technology, 2008. - 23 p.</mixed-citation><mixed-citation xml:lang="en">Van Dam, C.-P., Kahn, D.-L., Berg, D.-E. Trailing edge modifications for flatback airfoils. Albuquerque; Livermore: Sandia National Laboratories; Wind Energy Technology, 2008, 23 p.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Murcia, J.-P., Pinilla Á. CFD Analysis of Blunt Trailing Edge Airfoils Obtained with Several Modification Methods / J.-P. Murcia, Á. Pinilla // Revista de Ingenierı́a. - 2011. - Iss. 33. - P. 14-24.</mixed-citation><mixed-citation xml:lang="en">Murcia, J.-P., Pinilla, Á. CFD Analysis of Blunt Trailing Edge Airfoils Obtained with Several Modification Methods. evista de ngenier a, 2011, iss. 33, pp. 14–24.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Sant, R. Influence of open trailing edge on laminar aerofoils at low Reynolds number / R. Sant, L. Ayuso, J. Meseguer // Journal of Aerospace Engineering. Proceedings of the Institution of Mechanical Engineers. Part G. - 2012. - Vol. 227, iss. 9. - P. 1456-1467.</mixed-citation><mixed-citation xml:lang="en">Sant, R., Ayuso, L., Meseguer, J. Influence of open trailing edge on laminar aerofoils at low Reynolds number. Journal of Aerospace Engineering. Proceedings of  the Institution of Mechanical Engineers. Part G. 2012, vol. 227, iss. 9, pp. 1456–1467.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Selig, M.-S. Wind tunnel aerodynamic tests of six airfoils for use on small wind turbines / M.-S. Selig, B.-D. McGranahan // Journal of solar energy engineering. - 2004. - Vol. 126, iss. 4. - P. 986-1001.</mixed-citation><mixed-citation xml:lang="en">Selig, M.-S., McGranahan, B.-D. Wind tunnel aerodynamic tests of six airfoils for use on small wind turbines. Journal of solar energy engineering, 2004, vol. 126, iss. 4, pp. 986–1001.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">A review on small scale wind turbines / A. Tummala [et al.] // Renewable and Sustainable Energy Reviews. - 2016. - Vol. 56. - P. 1351-1371.</mixed-citation><mixed-citation xml:lang="en">Tummala, A., et al. A review on small scale wind turbines. Renewable and Sustainable Energy Reviews, 2016, vol. 56, pp. 1351–1371.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Kong, C. Structural investigation of composite wind turbine blade considering various load cases and fatigue life / C. Kong, J. Bang, Y. Sugiyama // Energy. - 2005. - Vol. 30, iss. 11. - P. 2101-2114.</mixed-citation><mixed-citation xml:lang="en">Kong, C., Bang, J., Sugiyama, Y. Structural investigation of composite wind turbine blade considering various load cases and fatigue life. Energy, 2005, vol. 30, iss. 11, pp. 2101–2114.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Timmer, W. Thick airfoils for HAWTs / W. Timmer, R. van Rooy // Journal of Wind Engineering and Industrial Aerodynamics. - 1992. - Vol. 39, iss. 1. - P. 151-160.</mixed-citation><mixed-citation xml:lang="en">Timmer, W., van Rooy, R. Thick airfoils for HAWTs. Journal of Wind Engineering and Industrial Aerodynamics, 1992, vol. 39, iss. 1, pp. 151–160.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Grasso, F. Development of Thick Airfoils for Wind Turbines / F. Grasso // Journal of Aircraft. - 2013. - Vol. 50, iss. 3. - P. 975-981.</mixed-citation><mixed-citation xml:lang="en">Grasso, F. Development of Thick Airfoils for Wind Turbines. Journal of Aircraft, 2013, vol. 50, iss. 3, pp. 975–981.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Piccirillo, A.-C. The Clark Y airfoil: A historical retrospective / A.-C. Piccirillo // SAE transactions. - 2000. - Vol. 109, iss. 1. - P. 1016-1036.</mixed-citation><mixed-citation xml:lang="en">Piccirillo, A.-C. The Clark Y airfoil: A historical retrospective. SAE transactions, 2000, vol. 109, iss. 1, pp. 1016–1036.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Ganis, M. L. CFD Analysis of the Characteristics of a Shrouded Turbine / M.-L. Ganis. - Hamburg : Diplom.de, 2003. - 73 p.</mixed-citation><mixed-citation xml:lang="en">Ganis, M.-L. CFD Analysis of the Characteristics of a Shrouded Turbine. Hamburg: Diplom.de, 2003, 73 p.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Spalart, P.-R. A one equation turbulence model for aerodinamic flows / P.-R. Spalart, S.-R. Allmaras // Recherche Aerospatiale. - 1994. - Iss. 1. - P. 5-21.</mixed-citation><mixed-citation xml:lang="en">Spalart, P.-R., Allmaras, S.-R. A one equation turbulence model for aerodinamic flows. Recherche Aerospatiale, 1994, iSS. 1, pp. 5–21.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Атмосфера стандартная. Параметры. ГОСТ 4401-81 / Государственный комитет СССР по стандартам. - Москва : Изд-во стандартов, 1981. - 179 с.</mixed-citation><mixed-citation xml:lang="en">Atmosfera standartnaya. Parametry. GOST 4401-81. [GOST 4401-81. Standard atmosphere. Parameters.] Gosudarstvennyy komitet SSSR po standartam. [USSR State  Standards Committee.] Moscow: Standartinform, 1981, 179 p. (in Russian).</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
