Investigation on optimization of the thermal performance for compressible laminar natural convection flow in open-ended vertical channel

2019 ◽  
Vol 128 ◽  
pp. 794-806 ◽  
Author(s):  
Deboprasad Talukdar ◽  
Chung-Gang Li ◽  
Makoto Tsubokura
Keyword(s):  
Natural Convection ◽  
Thermal Performance ◽  
Vertical Channel ◽  
Convection Flow ◽  
Natural Convection Flow ◽  
Laminar Natural Convection

scholarly journals Detailed flow development and indicators of transition in a natural convection flow in a vertical channel

2019 ◽  
Vol 143 ◽  
pp. 118502 ◽  
Author(s):  
Martin Thebault ◽  
Stéphanie Giroux-Julien ◽  
Victoria Timchenko ◽  
Christophe Ménézo ◽  
John Reizes
Keyword(s):  
Natural Convection ◽  
Vertical Channel ◽  
Convection Flow ◽  
Natural Convection Flow ◽  
Flow Development

A Pseudospectral Analysis of Laminar Natural Convection Flow and Heat Transfer Between Two Inclined Parallel Plates

2006 ◽  
Author(s):  
Serkan Kasapoglu ◽  
Ilker Tari
Keyword(s):  
Heat Transfer ◽  
Natural Convection ◽  
Boundary Conditions ◽  
Boussinesq Approximation ◽  
Temperature Fields ◽  
Convection Flow ◽  
Parallel Plates ◽  
Natural Convection Flow ◽  
Constant Wall Temperature ◽  
Laminar Natural Convection

Three dimensional laminar natural convection flow of and heat transfer in incompressible air between two inclined parallel plates are analyzed with the Boussinesq approximation by using spectral methods. The plates are assumed to be infinitely long in streamwise (x) and spanwise (z) directions. For these directions, periodic boundary conditions are used and for the normal direction (y), constant wall temperature and no slip boundary conditions are used. Unsteady Navier-Stokes and energy equations are solved using a pseudospectral approach in order to obtain velocity and temperature fields inside the channel. Fourier series are used to expand the variables in × and z directions, while Chebyshev polynomials are used to expand the variables in y direction. By using the temperature distribution between the plates, local and average Nusselt numbers (Nu) are calculated. Nu values are correlated with φ, which is the inclination angle, and with Ra·cosφ to compare the results with the literature.

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