graphics card cht analysis

HEAT TREANSFER ANALYSIS ON GRAPHICS CARD:

The aim of the simulation is to analys the temperature attained by the processor and the heat transfer coefficent at apporopriate areas .

GEOMETRY:

The geometry is the basic model of the graphics card which consist of processor ,fin ,base and other eletronic components.share topology ON.

MESH:

A baseline mesh had been done with default mesh element shape with 87685 elements.

NAMED SELECTION :

inlet,outlet,wall,base components,fin, processor.

SETUP:

Steady state, simple method,energy equation ON,flow laminar,hybrid initialization.

fin-aluminium,processor-copper,base and components-steel.

BOUNDARY CONDITONS:

velocity inlet-2m/s

temperature of air -280k

heat generated by the processor-27000000w/m^3

RESULT:

:

REFINED MESH:

The refined mesh having the same geometry ,but the mesh elements is slightly increase to 320641.

The refined mesh is also done with the above setup and boundary conditions.

RESULT :

BASELINE MESH-

1. wall heat transfer coefficent:-1154w/m^2k
2. temperature attain by the fin and pcb board:-322.3k

REFINED MESH-

1. wall heat transfer coefficent:-1145w/m^2k
2. temperature attain by the fin and pcb board:-319.1k
3. temperature attain by the processor:-319.1k