CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Fluent Multiphase

Re: Solidification/Melting Model in FLUENT 13.0

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

Like Tree3Likes
  • 1 Post By sooroo3
  • 1 Post By dinesh
  • 1 Post By Tri_marsah

Reply
 
LinkBack Thread Tools Display Modes
Old   June 13, 2013, 03:49
Default Re: Solidification/Melting Model in FLUENT 13.0
  #1
Member
 
Yash Ganatra
Join Date: Mar 2013
Posts: 67
Rep Power: 4
yashganatra is on a distinguished road
I am simulating solidification of a metal in an enclosure with Natural Convection. In operating conditions, I switched on gravity and put -9.8 in Y direction and operating temperature as melting temp (302.9 K).
Left wall is at 290 K and right wall at 310 K
I used QUICK scheme for discretization and SIMPLE algorithm. I have kept VOF OFF.
However, the contours of temperature and liquid fraction are vertical lines which shouldn't be the case as i am using Boussinesq Approximation.
I referred manual and it states that the enthalpy is updated using enthalpy porosity technique. I am attaching screenshots of all my conditions.

I would be grateful if someone could suggest the possible errors.
Kindly help

Thanks,
Yash
Attached Images
File Type: jpg Operating Conditions.JPG (40.1 KB, 130 views)
File Type: jpg Under-relaxation.JPG (22.6 KB, 101 views)
File Type: jpg Liquid Fraction.JPG (43.0 KB, 119 views)
File Type: jpg Temperature contour.JPG (48.0 KB, 110 views)
yashganatra is offline   Reply With Quote

Old   June 13, 2013, 05:15
Default
  #2
Far
Super Moderator
 
Far's Avatar
 
Sijal Ahmed Memon (turboenginner@gmail.com)
Join Date: Mar 2009
Location: Islamabad Pakistan
Posts: 3,948
Blog Entries: 6
Rep Power: 39
Far will become famous soon enoughFar will become famous soon enough
Send a message via Skype™ to Far
http://www.afs.enea.it/fluent/Public.../PDF/chp21.pdf
Far is offline   Reply With Quote

Old   June 13, 2013, 05:22
Default
  #3
Member
 
Yash Ganatra
Join Date: Mar 2013
Posts: 67
Rep Power: 4
yashganatra is on a distinguished road
Thank you for your reply. Sir, I have followed this tutorial. This involves continuous casting. and I am not clear why g has been specified in the X direction. However I am unable to get the contours of liquid fraction for my case
yashganatra is offline   Reply With Quote

Old   June 13, 2013, 05:53
Default
  #4
Member
 
Yash Ganatra
Join Date: Mar 2013
Posts: 67
Rep Power: 4
yashganatra is on a distinguished road
Re: UDF for Modelling Soldification using Enthalpy Porosity Technique

Could you please check my UDF also? I have searched lots and now I am stuck here. It would be great if anyone could help out.

Thanks,
Yash
yashganatra is offline   Reply With Quote

Old   June 13, 2013, 05:54
Default
  #5
Member
 
Yash Ganatra
Join Date: Mar 2013
Posts: 67
Rep Power: 4
yashganatra is on a distinguished road
I have included link in the above message
yashganatra is offline   Reply With Quote

Old   August 14, 2013, 04:27
Default
  #6
New Member
 
YG Kim
Join Date: Nov 2010
Posts: 15
Rep Power: 6
sooroo3 is on a distinguished road
You should activate "specified operating density" in variable-density parameters. hope it help you.
yashganatra likes this.
sooroo3 is offline   Reply With Quote

Old   September 4, 2013, 00:54
Default
  #7
New Member
 
Ravi Sharma
Join Date: Aug 2012
Posts: 6
Rep Power: 4
ravipvb is on a distinguished road
HI, I believe that you will get the vertical lines only because for low temperature difference between hot and cold wall, conduction and convection exist together and phase front is parallel to the hot & cold walls. your are simulating a simple case so there shouldn't be any problem...go through this paper.."Nanoparticle-enhanced phase change materials (NEPCM) with great potential for improved thermal energy storage; J. M. Khodadadi, S. F. Hosseinizadeh"
ravipvb is offline   Reply With Quote

Old   September 4, 2013, 13:39
Default
  #8
Member
 
Vjoess
Join Date: Oct 2012
Posts: 52
Rep Power: 4
dinesh is on a distinguished road
Quote:
Originally Posted by sooroo3 View Post
You should activate "specified operating density" in variable-density parameters. hope it help you.
will the operating temperature be the melting temperature. Also what we be the operating density whether is will be of soild or melted liquid. also while using PISO/Body force weighted/2nd order scheme i get the divergence after some initial run. my flow dir is Y, but divergence comes in x and z components of velocity. what should i do.
thermal energy likes this.
dinesh is offline   Reply With Quote

Old   December 11, 2013, 15:05
Default
  #9
New Member
 
tri_marsah
Join Date: Aug 2013
Posts: 1
Rep Power: 0
Tri_marsah is on a distinguished road
Quote:
Originally Posted by yashganatra View Post
I have included link in the above message
could you give me your file .msh??
maybe i can help your problem. because few day ago, i simulated solar water heater problem, and i think your problem as same as with my simulated
my email : tri01091991@gmail.com
thermal energy likes this.
Tri_marsah is offline   Reply With Quote

Old   December 11, 2013, 15:26
Default
  #10
Senior Member
 
Join Date: Jan 2010
Location: Germany
Posts: 268
Rep Power: 8
Zaktatir is on a distinguished road
check up the reference density!
Zaktatir is offline   Reply With Quote

Old   December 11, 2013, 15:30
Default
  #11
Senior Member
 
Join Date: Jan 2010
Location: Germany
Posts: 268
Rep Power: 8
Zaktatir is on a distinguished road
and i will start with a reference temperature equal to the middle temperature between the walls!
Zaktatir is offline   Reply With Quote

Old   December 18, 2013, 00:12
Default Combine solidification model and DPM
  #12
New Member
 
Dudi
Join Date: Jul 2013
Posts: 2
Rep Power: 0
adi83 is on a distinguished road
Hello everyone,

Does anyone knows how to simulate solidification in the DPM, because currently I study droplet solidification in gas atomization.

Thank you very much for the attention.
Dudi
adi83 is offline   Reply With Quote

Reply

Tags
fluent 13, solidification/melting

Thread Tools
Display Modes

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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Why is Fluent unable to deal with my model at the micron scale? dixylo FLUENT 4 December 9, 2011 00:39
H ow to compute the model by FLUENT and ANSYS njiit FLUENT 0 March 2, 2010 23:24
Fluent 12 k-w SST turbulence model DarrenC FLUENT 0 December 13, 2009 09:33
Seeking Macroscopic Particle Model in Fluent bzhang7 FLUENT 0 May 27, 2009 13:36
Covert Star-CD model to FLUENT Lam CD-adapco 6 June 24, 2003 20:21


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