Flow around a cylinder at the beginning of the critical region

K. G. Dobrosel’skii

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

4 Цитирования (Scopus)

Аннотация

Results of experiments with a turbulent flow around a transversely aligned circular cylinder located at identical distances from the walls of a rectangular channel are reported. Data on averaged velocity fields around the cylinder are obtained by means of particle image velocimetry (PIV). Based on these fields, the near wake behind the cylinder is studied, and the kinematic characteristics for flow regimes with and without cavitation are compared. Based on the vector fields of averaged velocity, the angles of separation of the boundary layer from the cylinder surface in the considered flow regimes are determined. The drag coefficients of the cylinder for different flow regimes are calculated. It is demonstrated that the vortex region behind the cylinder and the drag coefficient of the cylinder increase in the case with cavitation. It is also shown that vortex shedding from the cylinder may be irregular, despite the fact that this process is quasi-periodic for most of the time.

Язык оригиналаанглийский
Страницы (с-по)293-299
Число страниц7
ЖурналJournal of Applied Mechanics and Technical Physics
Том57
Номер выпуска2
DOI
СостояниеОпубликовано - 1 мар 2016

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