Hochschule Bremen - University of Applied Sciences

Hochschule Bremen

Effect of the inclination on three-dimensional incompressible fluid flow in a discretely heated cavity

Begutachtete Publikation

Natur und Technik

Julius Robert Mayer - Institut für Energietechnik

Smolen, Slawomir, Prof. Dr.-Ing.
Belarche, Lahoucine
Abourida, Btissam
Mediouni, Touria

Autor_innen, Jahr, Titel
Slawomir Smolen
Effect of the inclination on three-dimensional incompressible fluid flow in a discretely heated cavity
21. International Symposium: Research-Education-Technology
Gdansk University of Technology, Proceedings, May 2013

Weitere Informationen
Gdansk University of Technology Publishers, Gdansk
ISBN 978-83-88579-23-3, Proceedings

Cooling of components is one of the most common problems encountered in the design of electronic equipments. This problem can be solved using the fluid flow due to the buoyancy forces action (natural convection), especially in the case of small temperature gradients. Indeed, this mode, in addition to be simple and low cost, allows a good evacuation of the energy surplus, which is responsible of the electronic components deterioration. This explains the existence of numerous theoretical and practical studies, conducted on this subject. We can note that the majority of the available studies considered the case of two-dimensional natural convection. However, the three-dimensional approach allows a better simulation of the fluid flow and heat transfer within the cavity.
Thus, the objective of the present study is to simulate numerically the fluid flow and heat transfer in a three-dimensional inclined cavity with two heating sections placed on its vertical wall. These sections, similar to the integrated electronic components, generate a heat flux q". The opposite vertical wall is kept at a cold temperature Tc, while the remaining walls are adiabatic.
Adopting the Boussinesq approximation, the governing equations (Navier-Stokes and energy equations) are discretized by the finite volume method. The momentum conservation equations, coupled with the continuity equation, are solved using SIMPLEC Algorithm. The resolution of the algebraic system, obtained after discretization of partial differential equations, is based on the alternating directions implicit method (ADI).
The results show that the heat transfer and flow intensity can be significantly improved by a proper choice of parameters. The results allow us to choose the optimal position of the heating sections to evacuate the energy surplus through the cold wall of the cavity.



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