PCM melting inside the Al cavity

shoxan · August 6, 2010, 12:56

Hello, I am modelling heat storage unit for electronic devices. It is basically aluminium enclosure open from the top and filled with phase change material (PCM). Heat sink with PCM heated from the bottom with constant heat flux. I managed how to model the solidification and melting, now I need to model thermal expansion of PCM during the melting. Does anyone knows how to do it? Shall I apply VOF model? There is an air above the PCM as well. So the interface between PCM and air should move up. Thank you in advance for help.

milansojitra · August 9, 2018, 02:12

i have a same problem,
i am currently doing my master project on the phase change material,at that rectangular 2d model is there and both sidewall and bottom wall is adiabatic and upper wall is exposed to constant temperature of 500 centigrade and my PCM material have liquid temp is 490 and initially set temp is 480 but when i doing post processing there is no liquefaction done so what is the problem in my boundary condition????pls reply fast its a urgent

August 6, 2010, 12:56	PCM melting inside the Al cavity	#1
shoxan New Member Shokan Join Date: Aug 2010 Posts: 1 Rep Power: 0	Hello, I am modelling heat storage unit for electronic devices. It is basically aluminium enclosure open from the top and filled with phase change material (PCM). Heat sink with PCM heated from the bottom with constant heat flux. I managed how to model the solidification and melting, now I need to model thermal expansion of PCM during the melting. Does anyone knows how to do it? Shall I apply VOF model? There is an air above the PCM as well. So the interface between PCM and air should move up. Thank you in advance for help.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
How can I make the solid PCM to sink to the bottom as it melts?	Lim	FLUENT	6	December 22, 2014 02:29
Radiative heat transfer with natural convection inside a square cavity	msarkar	OpenFOAM	1	January 11, 2010 22:21
melting of pcm in cylindrical annnulus?	birol	FLUENT	0	December 31, 2008 07:42
B.C. for a cavity inside a volume	ding	Siemens	2	August 23, 2007 03:41
meshing F1 front wing	Steve	FLUENT	0	April 17, 2003 12:37

August 9, 2018, 02:12		#2
milansojitra New Member milan laljibhai sojitra Join Date: Aug 2018 Posts: 1 Rep Power: 0	i have a same problem, i am currently doing my master project on the phase change material,at that rectangular 2d model is there and both sidewall and bottom wall is adiabatic and upper wall is exposed to constant temperature of 500 centigrade and my PCM material have liquid temp is 490 and initially set temp is 480 but when i doing post processing there is no liquefaction done so what is the problem in my boundary condition????pls reply fast its a urgent