scholarly journals A Study of Non-linear, Non-Darcy Newtonian Liquid Flow and Heat Transfer Through Vertical Channel Using Mixed Boundary Conditions on Temperature

2016 ◽  
Vol 13 (10) ◽  
pp. 750-764
Author(s):  
Nur Asiah Mohd Makhatar ◽  
P.G. Siddheshwar ◽  
Habibis Saleh ◽  
Ishak Hashim
Keyword(s):  
Heat Transfer ◽  
Boundary Conditions ◽  
Liquid Flow ◽  
Mixed Boundary ◽  
Vertical Channel ◽  
Mixed Boundary Conditions ◽  
Newtonian Liquid ◽  
Flow And Heat Transfer ◽  
Non Linear

Enhanced Passive Thermal Management of Grid-Scale Power Routers Utilizing Ionic Wind

2014 ◽  
Author(s):  
Noris Gallandat ◽  
J. Rhett Mayor
Keyword(s):  
Heat Transfer ◽  
Electric Field ◽  
Mixed Boundary ◽  
Control Volume ◽  
Vertical Channel ◽  
Mixed Boundary Conditions ◽  
Thermal Design ◽  
Finite Difference Approximation ◽  
Difference Approximation ◽  
Ionic Wind

This paper presents a numerical model assessing the potential of ionic wind as a heat transfer enhancement method for the cooling of grid distribution assets. Distribution scale power routers (13–37 kV, 1–10 MW) have stringent requirements regarding lifetime and reliability, so that any cooling technique involving moving parts such as fans or pumps are not viable. Increasing the air flow — and thereby enhancing heat transfer — through Corona discharge could be an attractive solution to the thermal design of such devices. In this work, the geometry of a rectangular, vertical channel with a corona electrode at the entrance is considered. The multiphysics problem is characterized by a set of four differential equations: the Poisson equation for the electric field and conservation equations for electric charges, momentum and energy. The electrodynamics part of the problem is solved using a finite difference approximation (FDA). Solutions for the potential, electric field and free charge density are presented for a rectangular control volume with mixed boundary conditions.

scholarly journals Benchmark Studies for the Generalized Streamwise Periodic Heat Transfer Problem

2008 ◽  
Vol 130 (11) ◽  
Author(s):  
Steven B. Beale
Keyword(s):  
Heat Transfer ◽  
Boundary Conditions ◽  
Transfer Problem ◽  
Mixed Boundary ◽  
Mixed Boundary Conditions ◽  
Wall Boundary Conditions ◽  
Engineering Problems ◽  
Complex Engineering ◽  
The Common ◽  
Periodic Heat

This is a comparison of calculations performed with a scheme for handling streamwise-periodic boundary conditions with known solutions to the common problem of fully developed heat transfer in a plane duct. Constant value, constant flux, mixed boundary conditions, and linear wall flux (conjugate heat transfer) are all considered. Agreement is, in every case, near exact showing that the methodology may be applied with confidence to complex engineering problems with a variety of thermal wall boundary conditions.

Effects of Dufour and Soret mechanisms on MHD mixed convective-radiative non-Newtonian liquid flow and heat transfer over a porous sheet

2020 ◽  
Vol 16 ◽  
pp. 100459 ◽  
Author(s):  
U.S. Mahabaleshwar ◽  
K.R. Nagaraju ◽  
P.N. Vinay Kumar ◽  
M.N. Nadagouda ◽  
R. Bennacer ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Liquid Flow ◽  
Newtonian Liquid ◽  
Porous Sheet ◽  
Flow And Heat Transfer
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