NDLI: Simulation of the Flow in a Ribbed Rotating Duct with a Hybrid k-ω RANS/LES Model

Content Provider	Springer Nature Link
Author	Kubacki, S. Rokicki, J. Dick, E.
Copyright Year	2015
Abstract	The objective of this work is to verify the capabilities of a hybrid k-ω RANS/LES model for simulation of the unsteady three-dimensional flow in a ribbed duct subjected to system rotation. The Reynolds number is 15,000 and the rotation number is 0.3, both based on hydraulic diameter and bulk velocity. A correction term for system rotation is introduced into the originating k-ω RANS model. Simulation results in the mid-span section are compared with experimental data by Coletti et al. (Exp. Fluids 52:1043–1061, 2012). The comparison is complemented by analysis of the flow features in cross-sections. It is demonstrated that the hybrid k-ω RANS/LES model produces an accurate simulation of the rotating ribbed duct flow. Results are compared with those by the originating time-accurate k-ω RANS model. The k-ω RANS model is not accurate concerning secondary features in the longitudinal mean flow recirculation patterns and the secondary flow in cross-sections, but it reproduces quite well the time-averaged longitudinal flow.
Starting Page	45
Ending Page	78
Page Count	34
File Format	PDF
ISSN	13866184
Journal	Flow, Turbulence and Combustion
Volume Number	97
Issue Number	1
e-ISSN	15731987
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-11-10
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	System rotation Rib-roughened duct Coriolis force Turbulence modelling Hybrid RANS/LES model k-ω model Engineering Fluid Dynamics Fluid- and Aerodynamics Engineering Thermodynamics, Heat and Mass Transfer Automotive Engineering
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Physical and Theoretical Chemistry Chemical Engineering

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