In: Journal of Hydrology and Hydromechanics, vol. 65, no. 4
Filippo Bossi - Oleksandr Barannyk - Mostafa Rahimpour - Stefano Malavasi - Peter Oshkai
Detaily:
Rok, strany: 2017, 378 - 384
Kľúčové slová:
Perforated plate; Flow-induced loading; Flow-induced vibration.
URL originálneho zdroja: http://www.ih.sav.sk/jhh
O článku:
This paper reports the results of experimental investigations of flow-induced loading on perforated and solid
flat plates at zero incidence with respect to the incoming flow. The plates had a streamwise length to transverse thickness
ratio of 23.5. The effect of the perforations was investigated for three different perforation diameters. The results corresponding
to the perforated plates were compared with the reference case of the solid plate (no perforations) at five inflow
velocities. We quantified the effect of the perforations on the unsteady fluid loading on the plate in terms of the variations
of the corresponding Strouhal number, the mean drag coefficient and the fluctuating lift coefficient as functions of
the Reynolds number and the perforation diameter. The results indicate that the loading was dominated by the dynamics
of the wake. In particular, increasing the perforation diameter resulted in a wider wake, corresponding to the increase in
mean drag coefficient and the decrease in the Strouhal number. Onset of coupling between the vortex shedding and the
transverse oscillations of the plate was manifested as a rapid increase in the fluctuating lift coefficient, as the perforation
diameter exceeds the plate thickness.
Ako citovať:
ISO 690:
Bossi, F., Barannyk, O., Rahimpour, M., Malavasi, S., Oshkai, P. 2017. Effect of transverse perforations on fluid loading on a long, slender plate
at zero incidence. In Journal of Hydrology and Hydromechanics, vol. 65, no.4, pp. 378-384. 0042-790X (until 2019) .
APA:
Bossi, F., Barannyk, O., Rahimpour, M., Malavasi, S., Oshkai, P. (2017). Effect of transverse perforations on fluid loading on a long, slender plate
at zero incidence. Journal of Hydrology and Hydromechanics, 65(4), 378-384. 0042-790X (until 2019) .