|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ПсковГУ |
||
Evaluation of energy and impulse generated by superheated steam bubble collapse in subcooled waterстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 24 сентября 2020 г.
- Авторы: Melikhov V.I., Melikhov O.I., Yakush S.E., Le T.C.
- Журнал: Nuclear Engineering and Design
- Том: 366
- Год издания: 2020
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Номер статьи: 110753
- DOI: 10.1016/j.nucengdes.2020.110753
- Аннотация: Collapse of superheated vapor bubbles in subcooled water is studied from the viewpoint of possible mechanisms of premixed zone formation in stratified vapor explosions. Numerical modeling is performed for spherically symmetric bubble collapse in subcooled water, with different initial vapor superheats. The kinetic energy of liquid flow generated due to vapor collapse is obtained. It is shown that the primary mechanism triggering vapor collapse and water flow is vapor cooling in the bubble by colder interface, lowering the vapor pressure and generating necessary pressure drop. Results are compared with an idealized case of bubble vapor maintained at the saturation conditions corresponding to water temperature. Two-dimensional simulations of bubble collapse near solid wall are performed by the boundary element method. Implications to stratified vapor explosions are discussed, and correlations for possible splashing of melt due to the impact of water jets generated by a collapsing steam bubble are obtained.
- Добавил в систему: Якуш Сергей Евгеньевич