challenge

#CASE 1 : BASELINE MESH

# GEOMETRY :

# MESH :

Number of elements : 86136

Size of elements : 10.289 mm

# FLUENT :

PHYSICS :

1) inlet velocity : 1m/s

2) steady state

3) pressure based solver

4) absolute velocity

5) k epsilon viscous model

6) heat generated in the processor : 10000000 w/m3

# residuals :

# contours of static temperature:

# RESULTS :

TEMPERATURE DISTRIBUTION

WALL HEAT TRANSFER COEFFIECIENT

ANS 1 : 885.674 K

ANS 2 : We can see from the above plots that the solution has converged as the residuals are reducing with each iteration. And the heat is transfering through conduction ( between the processor and the fins ) and convection ( between fins and the air ).

ANS 3 : The heat tranfer coeff between the fins is between ( 576-1152)

ANS 4 : The potential hotspots are:

1) fins and air

2) processor

3) front end of the solid body

CASE 2 : REFINED MESH

# GEOMETRY

# MESH

Number of elements: 320641

Size of elements: 2 mm

#FLUENT

We will be using the same physics as in case 1.

RESIDUALS

STATIC TEMPERATURE CONTOUR

#RESULTS

TEMPERATURE DISTRIBUTION

WALL HEAT TRANSFER COEFFIECIENT

ANS 1 : 850.94 K

ANS 2 : We can see from the above plots that the solution has converged as the residuals are reducing with each iteration. And the heat is transfering through conduction ( between the processor and the fins ) and convection ( between fins and the air ).

ANS 3 : The heat tranfer coeff between the fins is between ( 576-1145)

ANS 4 : The potential hotspots are:

1) fins and air

2) processor

3) front end of the solid body

# CONCLUSION AND COMPARISON :

As we can see from the plots and graphs that the baseline mesh has the maximum temperature of (885.674)K and the maximum heat tranfer coeff of (1152).

On the other hand the refined mesh has the maximum temperatre (850.94)K and the maximum heat transfer coeff of (1145) also the result is more finer and thus more precise.