|January 9, 2014, 18:33||
melting in horizontal shell in tube, need help friends
Join Date: Jan 2014
Posts: 36Rep Power: 5
ı have a problem. problem is that
ı simulate melting for horizontal shell in tube (annulor). boundry conditions are that isothermal condition at the inner surface of the annulus and the adiabatic condition at the outer surface of annulus.
ı used simple algorithm (pressure based solver and transient).
As a spatial discretization, ı used least squares cell based, presto, power law and power law for gradient, pressure, momentum and energy respectively.
as an phase change material ı used paraffin (melting range Tm=56-58). paraffin properties are that ı used boussinessq mean (solid and liquid) density value ,constant cp, k, viscosity and thermal expansion coefficient. also, ı used melting point instead of range , Tm=57.
my geometry dimensions are like that; inner diameter is 28mm and outer diameter is 110mm. ı simulate only half of the annulor (symmetry condition).
my melting simulation is mentioned above. but solution is not good. that is my experimental data and simulated data do not have good agreement as a characteristic of figure. the figure is attached (T14 is temperature of pcm which is in lower part of annulor).
why does this difference occur?
ı am really in need of help
Last edited by thermal energy; January 10, 2014 at 07:30.
|Thread||Thread Starter||Forum||Replies||Last Post|
|shell and tube heat exchanger||samidabest||FLUENT||0||January 8, 2013 04:26|
|Need Help in simulating shell and tube heat exchnger||ehsanakrami||FLUENT||3||August 24, 2012 05:40|
|condensation on horizontal tube???||Wikie||FLUENT||0||July 30, 2010 04:53|
|liquid piston in horizontal tube||Allen_Lin||FLUENT||0||May 30, 2009 03:47|
|How to simulate 3D shell and Tube heat Exchanger||san||FLUENT||2||February 22, 2006 06:44|