# Simple Melting Problem

 Register Blogs Members List Search Today's Posts Mark Forums Read

March 15, 2013, 06:10
Simple Melting Problem
#1
New Member

manuel
Join Date: Mar 2013
Posts: 5
Rep Power: 5
Hy all fluent users!

I am a fluent beginner and i want to set up a melting/solidification problem. I started with the easiest model, but i still have troble with that.

My model is a cuboid. All walls are adiabat except one. This one is heated (T=600K). The properties of the pcm are all set to constant:
• density = 2260 kg/m^3
• specific heat = 1820 j/kgK
• thermal conductivity = 0.5 W/mK
• solvent melting heat = 178000 j/kg
• solidus temperature = 580.65 K
• liquidus temperature = 581.65 K
Solution Controls: default
Initial value for temperature: T = 300 K
Time step: t = 2 s

After the first layer is molten, it takes a long time that the melting process continues. There is always some time between the melting of two layers. It dosn't melt consistent. The bigger i choose thermal conductivity and the lower i choose density, the shorter become the time between the two layers (whre no melting is occurring). see the picture attached!!

What do I have to change to get a consistent melting???

Attached Images
 pcm_melting_residuals_1.JPG (13.0 KB, 15 views)

 Tags melting, pcm, solidification/melting

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post flex00 FLUENT 2 January 16, 2014 12:50 gradstudent2430 FLUENT 1 April 19, 2012 05:23 MarkK CFX 4 February 5, 2011 06:30 Luk FLUENT 4 May 12, 2006 09:47 Davy Main CFD Forum 0 August 21, 1998 06:19

All times are GMT -4. The time now is 21:35.