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- W2083823351 abstract "This work is directed towards numerical simulations of short time temperature oscillations in liquid during the melting and/or solidification processes. A new approach based on the time-dependent Navier-Stokes equation developed for this purpose is proposed. The method is further applied to three example situations showing that it is capable of handling complicated phase-change problems. The mechanism of origin of the temperature oscillations in the vortices interaction is demonstrated. On étudie par simulation numérique les oscillations rapides de température dans un liquide pendant les mécanismes de fusion et/ou de solidification. On propose une nouvelle approche basée sur l'équation de Navier-Stokes dépendant du temps et développée dans ce but. La méthode est appliquée ensuite à trois exemples montrant qu'elle est capable de traiter des problèmes compliqués de changement de phase. On traite du mécanisme des oscillations de température dans l'interaction des tourbillons. Es wird die numerische Simulation von hochfrequenten Temperaturschwingungen in Flüssigkeiten während des Schmelz- und/oder Erstarrungsvorgangs beschrieben. Hierfür wird ein auf der zeitabhängigen Navier-Stokes-Gleichung basierender neuer Ansatz entwickelt. Die Methode wird auf drei Beispiele angewandt, um aufzuzeigen, daβ die Behandlung komplizierter Phasenwechselprobleme möglich ist. Es wird gezeigt, daβ die Temperaturschwingungen durch Wirbelwechselwirkungen entstehen. Чиcлeннo мoдeлиpyютcя кoлeбaния тeмнepaтypы зидкocти в пpoцeccaч плaвлeния и (или) зaтвepдeвaиия. Пpeдлoзeн нoвый пoдчoд нa ocиoвe нecтaциoиapнoгo ypaвнeния Haвьe-Cтoкca. Этoт мeтoд дaлee иллюocтpиpyeтcя нa тpeч пpимepaч, пpи этoм пoкaзиo, чтo oн мoзeт ycпeшнo иcпoльзoвaтьcя для peшeиия cлoзныч зaдaч фaзoвoгo пepeчoдa. Oпиcывaeтcя мeчaнизм вoзникнoвeния тeмпepaтypныч кoлeбaний пpи взaимoдeйcтвии вичpeй." @default.
- W2083823351 created "2016-06-24" @default.
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- W2083823351 date "1992-02-01" @default.
- W2083823351 modified "2023-10-14" @default.
- W2083823351 title "Simulation of convective temperature oscillations in phase-change processes" @default.
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- W2083823351 doi "https://doi.org/10.1016/0017-9310(92)90277-y" @default.
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