Large Eddy Simulation of Turbulent Flow and Heat Transfer in a Ribbed Coolant Passage
Abhishek G. Ramgadiaa and Arun K. Sahab
Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur 208 016, India.
aabhiramg@iitk.ac.in
baksaha@iitk.ac.in
ABSTRACT
In present study numerical simulations of hydrodynamic and thermally fully developed turbulent flow are presented for flow through a unit period of stationary duct with in-line transverse rib turbulators. The rib height to hydraulic diameter ratio (e/Dh) is 0.1 and the rib pitch to rib height ratio ( P/e ) is 10. The effect of secondary flow due to rib tabulators on heat and mass transfer in a stationary square ducts has been investigated. The present work comprehensively reviews the use of a large eddy simulation (LES) turbulence model, called shear improved Smagorinsky model, for predicting flow and heat transfer and elucidates the detailed physics encountered in the fully developed region. The computations are performed for Reynolds Number of 2,053. Instantaneous flow field, time-mean and turbulent quantities are reported together with heat and mass transfer.
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