Week 6: Conjugate Heat Transfer Simulation
introduction
conjugate heat transfer
- conjugate heat transfer corresponds with the combination of heat transfer in solids and heat transfer in the fluid.
- in solid, conduction is often domain whereas in fluid convection usually domain
- conjugate heat transfer is observed in many situations .for eggs heat sinks
super-cycling method
in the super cycling method, the fluid solver working on convection problem is paused for a small-time period allowing the solid-state conduction solver to catch up this method significantly reduce the number of cycle and simulation time'
velocity calculation
RE=7000
density=1.225
d=0.015m
viscosity=18.45*e-6
v=RE*viscosity/(density*d)
so velocity=7.025m/s
geometry
common case setup
mesh
results
yplus
velocity vector
velocity
temperature
Grid dependence test
dx=dy=dz=0.002
mesh
plus
velocity
temperature
pressure
dx=dy=dz=0.003
mesh
yplus
velocity
temperature
as grid size increase the time required to run simulation also decrease
outlet temperature also heated as grid size decrease
we found that y puls decrease as grid size decrease
Effect of supercycle stage interval
plus
velocity
pressure
as compared to the base case avg value of temperature id decrease as the Effect of supercycle stage interval changes