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

UDF for Heat Flux

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 11, 2014, 05:16
Default UDF for Heat Flux
  #1
New Member
 
Kishan Kumar Jaiswal
Join Date: Nov 2013
Posts: 4
Rep Power: 3
kishan kumar jaiswal is on a distinguished road
Dear all,
I am trying to write udf for heat flux having the formula

Q = 0.304/y*y*y

but I am unable to do it. It always shows some error.

Can anyone write udf for heat flux.

y is the length. and Q is the heat flux acting on X-Y plane in Z direction.
Geometry is a cube with dimension 10*5*0.005 all are in meters.
Thanks.

Last edited by kishan kumar jaiswal; April 11, 2014 at 07:18.
kishan kumar jaiswal is offline   Reply With Quote

Old   April 11, 2014, 10:08
Default
  #2
Senior Member
 
Bionico's Avatar
 
Flavio
Join Date: Sep 2011
Location: Brescia, Italy
Posts: 181
Rep Power: 5
Bionico is on a distinguished road
Hello kishan,
is this a boundary condition? In this case I suggest reading Fluent UDF Manual about DEFINE_PROFILE.

Regards
__________________
Bionico
Bionico is offline   Reply With Quote

Old   April 12, 2014, 01:35
Default
  #3
New Member
 
Kishan Kumar Jaiswal
Join Date: Nov 2013
Posts: 4
Rep Power: 3
kishan kumar jaiswal is on a distinguished road
Dear Bionico,
Thanks for your reply. Yes Its a boundary condition. I am doing the same as u suggested in your reply. but I don't know where I am wrong.
kishan kumar jaiswal is offline   Reply With Quote

Old   April 14, 2014, 02:01
Default
  #4
Senior Member
 
Bionico's Avatar
 
Flavio
Join Date: Sep 2011
Location: Brescia, Italy
Posts: 181
Rep Power: 5
Bionico is on a distinguished road
Hello,
can you post your UDF, please?

Regards
__________________
Bionico
Bionico is offline   Reply With Quote

Old   April 21, 2014, 18:01
Default
  #5
New Member
 
Kishan Kumar Jaiswal
Join Date: Nov 2013
Posts: 4
Rep Power: 3
kishan kumar jaiswal is on a distinguished road
Dear friend,
There are some changes introduced in the formula, right now it is

Q(Y) = (0.304)/(deltaY + deltaY/2)^-3
Where deltaY = 50cm and
Y = 10m

Y is the length on Y-axis and X whixh is equal to 5m is length on X-axis.
Q is heat flux apply on the X-Y plane towards the Z direction.
Geometry is a cube with dimension 10*5*0.005 all are in meters.

If possible please help

Regards,
Kishan
kishan kumar jaiswal is offline   Reply With Quote

Reply

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
UDF Mass flux computing Carlo FLUENT 6 November 23, 2014 22:59
uds flux - drift velocity - udf johnwinter Fluent UDF and Scheme Programming 1 August 12, 2011 05:29
UDF for heat flux applied during T seconds nazeem FLUENT 0 June 22, 2004 05:26
UDF for a heat flux applied during T second on a w nazeem FLUENT 0 June 12, 2004 10:28
udf for transient heat flux BC isaac FLUENT 1 June 3, 2004 16:29


All times are GMT -4. The time now is 00:19.