ОБЪЕМНАЯ ВЯЗКОСТЬ ФЛЮИДОВ: СОВРЕМЕННЫЕ ФИЗИКО-АНАЛИТИЧЕСКИЕ ПРЕДСТАВЛЕНИЯ И ПЕРСПЕКТИВЫ ИХ РАЗВИТИЯ
DOI :
https://doi.org/10.15673/0453-8307.4/2015.38333Mots-clés :
объемная вязкость, тензор напряжений, релаксация, звуковые волны, молекулярное моделирование, акустическая спектроскопия, оптические методы.Résumé
В работе обозначена значимость учета объемной вязкости при описании высокоинтенсивных процессов, таких как взрывы, истечение с высокими скоростями, акустические явления, а также в особых точках состояния вещества. Приведен тензор напряжений Ньютоновской жидкости с учетом коэффициента объемной вязкости. Обсуждены молекулярный механизм возникновения объемной вязкости и ее вклад в акустические явления. Сделан обзор методов молекулярного моделирования объемной вязкости и средств ее измерения. Рассматриваются проблемы нахождения объемной вязкости в окрестностях критической точки жидкость-газ.Références
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