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NUMERICAL STUDY OF TURBULENT FORCED CONVECTION IN A PERIODICALLY RIBBED CHANNEL WITH OSCILLATORY THROUGHFLOW

โœ Scribed by TORU FUSEGI

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
614 KB
Volume
23
Category
Article
ISSN
0271-2091

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โœฆ Synopsis

Numerical computations are performed on the fully developed flow and heat transfer in a periodically ribbed channel with oscillatory throughflow. A uniform heat flux is imposed at the lower plate of the channel. An externally sustained pressure gradient vanes sinusoidally in time. A low-turbulent-Reynolds-number version of the k+ two-equation model of turbulence is invoked, together with a preferential dissipation modification, to predict the complex turbulent flow field. Computed results indicate that much heat transfer enhancement is expected by increasing the Womersley number, which measures the relative strength of the oscillatory motion to the viscous effects.

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โœ Robert R. Hwang; Y.C. Chow; Y.F. Peng ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 426 KB ๐Ÿ‘ 2 views

This study accurately predicts the cases of turbulent flow around a surface-mounted two-dimensional rib with varying lengths. The numerical method employs a differencing scheme for integrating the elliptic Reynolds-averaged Navier-Stokes equations and the continuity equation. A two-equation k-m turb