Abstract
This paper reports on particle image velocimetry (PIV) measurements in turbulent flows over transverse triangular ribs attached to the bottom and top walls of a converging channel preceded by an upstream parallel section. The ribs were arranged perpendicular and then at an angle of 45∘to the side walls of the channel in a non-staggered configuration. The mean velocities and turbulent statistics obtained at various spanwise locations in both the parallel and converging sections of the channel are used to document the salient effects of rib roughness, pressure gradient, rib inclination and spanwise location of the flow field.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
P.-Å. Krogstad, H.I. Andersson, O.M. Bakken, A. Ashrafian, An experimental and numerical study of channel flow with rough walls. J. Fluid Mech. 530, 327–352 (2005).
S. Leonardi, P. Orlandi, R.J. Smalley, L. Djenidi, R.A. Antonia, Direct numerical simulations of turbulent channel with transverse square bars on one wall. J. Fluid Mech. 491, 229–238 (2003).
O.M. Bakken, P.-Å. Krogstad, A. Ashrafian, H.I. Andersson, Reynolds number effects in the outer layer of the turbulent flow in a channel with rough walls. Phys. Fluids. 17, 065101 (2005).
X. Gao, B. Sunden, Effects of inclination angle of ribs on the flow behaviour in rectangular ducts. J. Fluids Eng. 126, 692–699 (2004).
B. Bonhoff, S. Parneix, J. Leusch, B.V. Johnson, J. Schabacker, A. Bölcs, Experimental and numerical study of developed flow and heat transfer in coolant channels with 45 degree ribs. Int. J. Heat Fluid Flow. 20, 311–319 (1999).
M.F. Tachie, M.K. Shah, Favourable pressure gradient flow over straight and inclined ribs on both channel walls. Phys. Fluids. 20, 095103 (2008).
Acknowledgments
The financial support of this work by the Natural Sciences and Engineering Research Council of Canada is gratefully acknowledged.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2010 Springer Science+Business Media B.V.
About this paper
Cite this paper
Tachie, M.F., Agelinchaab, M. (2010). Turbulent Flows over Aligned and Inclined Ribs. In: Nickels, T. (eds) IUTAM Symposium on The Physics of Wall-Bounded Turbulent Flows on Rough Walls. IUTAM Bookseries, vol 22. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-9631-9_2
Download citation
DOI: https://doi.org/10.1007/978-90-481-9631-9_2
Published:
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-9630-2
Online ISBN: 978-90-481-9631-9
eBook Packages: EngineeringEngineering (R0)