Vinuesa R, Schlatter P, Nagib HM (2015)
Publication Type: Journal article
Publication year: 2015
Book Volume: 16
Pages Range: 588-606
Journal Issue: 6
DOI: 10.1080/14685248.2014.996716
To the surprise of some of our colleagues, we recently recommended aspect ratios of at least 24 (instead of accepted values over last few decades ranging from 5 to 12) to minimise effects of side walls in turbulent duct flow experiments, in order to approximate the two-dimensional channel flow. Here we compile available results from hydraulics and civil engineering literature, where this was already documented in the 1980s. This is of great importance due to the large amount of computational studies (mainly direct numerical simulations, DNSs) for spanwise-periodic turbulent channel flows, and the extreme complexity of constructing a fully developed duct flow facility with aspect ratio of 24 for high Reynolds numbers with adequate probe resolution. Results from this non-traditional literature for the turbulence community are compared to our recent database of DNS of turbulent duct flows with aspect ratios ranging from 1 to 18 at Re
APA:
Vinuesa, R., Schlatter, P., & Nagib, H.M. (2015). On minimum aspect ratio for duct flow facilities and the role of side walls in generating secondary flows. Journal of Turbulence, 16(6), 588-606. https://doi.org/10.1080/14685248.2014.996716
MLA:
Vinuesa, Ricardo, Philipp Schlatter, and Hassan M. Nagib. "On minimum aspect ratio for duct flow facilities and the role of side walls in generating secondary flows." Journal of Turbulence 16.6 (2015): 588-606.
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