Numerical and experimental study of Isotherm field inside a desktop P. C.

Abstract EN

In this paper the heat transfer analysis from a heat generation components (central processing unit CPU and power supply) in a P.C.

desktop was studied.

Experimental and three–dimensional numerical study of laminar steady flow with mixed convection has been analyzed (for Ra = 8.3 * 10 5).

The Computational Fluid Dynamics (CFD) techniques are employed in numerical solution to calculate the temperature distribution inside the computer, by solving continuity, momentum and energy equations.

This technique is based on structured grid (staggered grid) and finite volume formulation to discretize the governing equations (reduced to algebraic equations).

The hybrid scheme and SIMPLE algorithm have been carried out to get the final solution.

Five cases are studies for different heat source and inlet air flow locations.

The temperature distribution and average temperature inside the computer are calculated to reach the optimum thermal design of the five cases.

The numerical results obtained are found in a satisfactory agreement with the experimental results.

Further the results confirmed that the most important parameter affecting the thermal behaviors is the position of heat-generation source and inlet air flow.

The numerical solution shows that the case (4) is the optimum thermal design by comparison with other cases.