Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1016/j.ijheatmasstransfer.2010.03.006
Titel (primär) Vortex shedding and heat transfer dependence on effective Reynolds number for mixed convection around a cylinder in cross flow
Autor Bhattacharyya, S.; Singh, A.K.
Quelle International Journal of Heat and Mass Transfer
Erscheinungsjahr 2010
Department ENVINF
Band/Volume 53
Heft 15-16
Seite von 3202
Seite bis 3212
Sprache englisch
Keywords Buoyancy; Laminar flow; Vortex shedding patterns; Heat transfer; Baroclinic vorticity
Abstract The influence of surface heating of a circular cylinder on the wake structure and heat transfer in the range of Reynolds number (Re) for which parallel vortex shedding occurs, is investigated numerically for different values of the buoyancy parameter, Gr. The role of buoyancy induced baroclinic vorticity on the wake formation is addressed in the present study. The variation of Strouhal number and Nusselt number with the 'effective Reynolds number', is analyzed for different values of cylinder to free stream temperature ratio. Both Strouhal number and the rate of heat transfer increases monotonically with the increase of the effective Reynolds number. The validity of the correlations, which have been established by several authors, between the effective Reynolds number and Strouhal/ Nusselt number for forced convection, is examined in the mixed convection regime. The curves between the effective Reynolds number and the computed data for Strouhal number and Nusselt number do not collapse for the range of temperature ratio considered here. The flow field is found to be asymmetric and the cylinder experiences a negative lift. The drag coefficient increases steadily with the rise of surface temperature.
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=9797
Bhattacharyya, S., Singh, A.K. (2010):
Vortex shedding and heat transfer dependence on effective Reynolds number for mixed convection around a cylinder in cross flow
Int. J. Heat Mass Transf. 53 (15-16), 3202 - 3212 10.1016/j.ijheatmasstransfer.2010.03.006