Week 6 - CHT Analysis on a Graphics card

Aim --> CHT Analysis on Graphics Card.

Mesh

Base Case

Results

Turbulence Model (K-e Realizable Model)

HTC (Fins-enclosure)

HTC (PCB_Base-enclosure)

Max Temperature (Processor)

Max Heat Transfer coefficient (Surface htc) From the Processor

(Negative sign indicates sign convention, heat is moving out of the processor.)

Temperature Contours

1. processor

Refined Case

1. Velocity = 1 m/s

HTC for Processor

Max. HTC processor

HTC for Fins

Max. HTC from fins

HTC from PCB Base

--> As PCB base is not a good conductor of heat, heat transfer through convection is also low.

2. velocity = 3 m/s

HTC processor

Max. HTC processor

Fins HTC

HTC PCB Base

3. Velocity = 5 m/s

Processor HTC

Max.HTC processor

HTC fins

HTC PCB base