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

Newbie needing some help

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

Reply
 
LinkBack Thread Tools Display Modes
Old   July 22, 2012, 17:51
Default Newbie needing some help
  #1
New Member
 
Ady
Join Date: Jul 2012
Posts: 1
Rep Power: 0
Ady2012 is on a distinguished road
Hi

I am a newbie to the CFD scene. My previous experience has been with dynamic FEA analysis using Hypermesh so I am looking to make the switch from the analysis of solids to fluids.

I am using ICEM for meshing and Fluent as the solver. I have done all the tutorials I can find in Hexa/Tetra for ICEM but still have a number of questions.

I tried to model a complex internal flowfield in 2d which struggled as a single surface. My idea was to then break it down into a number of seperate surfaces and then mesh each one and try to find a way to equivalence all the surfaces. However, when it was imported into Fluent, it put a line boundary between each surface. I was not blocking just surface meshing. What am I doing wrong?

Another thing, sometimes when I set the boundary conditions for fluid as fluid, it falls over when I try to import it into Fluent and it refuses to import the mesh?

Finally, my long term goal is to perform a CFD analysis of a boat. Can anyone steer me in the right direction of some good resources? Am I right in thinking that it has to be a VOF model?

Sorry it is so long and it is quite basic but I guess we all have to start somewhere.

Thanks

Ady
Ady2012 is offline   Reply With Quote

Old   July 23, 2012, 02:07
Default
  #2
Senior Member
 
Marion
Join Date: Jul 2012
Location: France
Posts: 122
Rep Power: 6
Marion is on a distinguished road
Hi Ady,

I've never used ICEM (I am a Gambit fan ) - maybe you can post the question about meshing in the meshing section of the forum?

For Fluent - the boundary conditions should be defined as inlet / outlet pressure, or flow rates, or things like that. The "fluid" part is the fluid domain (i.e. the volume considered). If that's what you did, maybe you've forgotten something about 2D/3D in fluent, or when you exported the mesh.
Have you done the Fluent tutorials?

Marion - who also started in dynamic FEA with hypermesh (car crash simulations) - I know what you're going through!
Marion 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
Newbie: why don't I hear anyone refer to Re in FEM and FD methods? bzz77 Main CFD Forum 6 January 12, 2012 16:16
Newbie: why use stream function instead of solving for x and y flow components? bzz77 Main CFD Forum 5 January 3, 2012 10:55
Newbie: advantages/disadvantages of "penalty formulation" incompressible fluid flow bzz77 Main CFD Forum 2 November 1, 2011 04:32
Newbie: Install ParaView 3.81 on OF-1.6-ext/OpenSuse 11.2? lentschi OpenFOAM Installation 1 March 9, 2011 03:32
Moving boundary tutorials needed by newbie! Sebastián Arboleda CFX 0 January 17, 2006 11:05


All times are GMT -4. The time now is 05:59.