Analysis of Thermal Flow in a Rotating Porous U-Turn Duct Using Lattice Boltzmann Method

The lattice Boltzmann method is carried out to investigate the heat transfer enhancement in a U-turn duct which is partially filled with a porous media. The porous layer is inserted at the core of the duct and is modeled using the Brinkman–Forchheimer assumptions. In order to validate the results, f...

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Bibliographic Details
Published in:Transport in porous media 2017, Vol.116 (1), p.295-318
Main Authors: Kardani, Ali, Omidvar, Pourya, Zarghami, Ahad
Format: Article
Language:English
Subjects:
Channel flow
Civil Engineering
Classical and Continuum Physics
Computational fluid dynamics
Couette flow
Darcy number
Ducts
Earth and Environmental Science
Earth Sciences
Fluid dynamics
Fluid flow
Geotechnical Engineering & Applied Earth Sciences
Heat transfer
Hydrogeology
Hydrology/Water Resources
Industrial Chemistry/Chemical Engineering
Mathematical models
Media
Parameters
Porous media
Pressure drop
Reynolds number
Rotation
Thermohydrodynamics
Thickness
Viscosity
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Summary:The lattice Boltzmann method is carried out to investigate the heat transfer enhancement in a U-turn duct which is partially filled with a porous media. The porous layer is inserted at the core of the duct and is modeled using the Brinkman–Forchheimer assumptions. In order to validate the results, first a channel flow problem without any porous layer is compared with available data. Second, the porous Couette flow and partially porous channel flow are successfully compared with the studies of other researchers. Then, fluid flow in a clear U-turn duct is studied looking carefully at the velocity, curvature and rotation effects. Finally, the effects of porous layer thickness on the rate of heat transfer and pressure drop are investigated. Parametric studies are conducted to evaluate the effects of various parameters (i.e., Reynolds number, Darcy number, rotation number), highlighting their influences on the thermo-hydrodynamics behavior of the flow. The optimum values of porous layer thickness are presented for specific flow parameters.
ISSN:0169-3913
1573-1634
DOI:10.1007/s11242-016-0775-y