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

Getting Wind Pressure value on buildings with complex surfaces

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 30, 2019, 03:43
Talking Getting Wind Pressure value on buildings with complex surfaces
  #1
New Member
 
Vitor Leite
Join Date: May 2019
Posts: 3
Rep Power: 7
vitorleiteg is on a distinguished road
Hi everyone,

I am working on a 2 story house and I am trying to get the wind pressure values of each external surface separately, according to each surface orientation. Because I simplified the model, removing all balconies and overhangs, seemed okay to use plot_surface objects or dumping object profile directly from phoenics to obtain the pressure values of each external surface separately (picture below).



https://imgur.com/a/PlrBxoU
If the model had overhangs, balconies or any complex geometries I believe utilizing plot_surface objects or dumping object profiles would not be advisable anymore.

My question is that: is there any way to separately obtain a surface variable values within Phoenics without dumping the whole blockage surface external surface?

I read some research papers that people could easily do it utilizing other programs plugins, such as Rhino, but I do not have access to any of these programs.

Thank you,

Vitor

Last edited by vitorleiteg; May 30, 2019 at 03:44. Reason: image not uploading
vitorleiteg is offline   Reply With Quote

Old   December 11, 2019, 12:02
Default
  #2
New Member
 
Join Date: Oct 2019
Posts: 11
Rep Power: 7
CHAM Support is on a distinguished road
Hi Vitor,

What you have done works well for a simple geometry like this, that is what I would suggest doing. For a more complex geometry this is more difficult and depends on what it is you are trying to achieve. Whether you want point/summed or averaged values for example.

Most importantly any objects you wish to pick up values for need to be resolved by the mesh. Balcony railings, for example, would need at least 1 cell per vertical rail to be resolved correctly.

You can output the forces in the X, Y and Z direction for the sum of all the facets of each object by going to “Menu > Output > Output of forces and moments on blockage objects”.

If you had a complex geometry imported from CAD for the balcony and overhang sections separately, you could get the force outputs from each of these objects in X, Y and Z.

Thanks,
Harry
CHAM Support is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pressure Inlet Boundary Conditions Mr.Goodcat FLUENT 5 June 20, 2019 02:47
static vs. total pressure auf dem feld FLUENT 17 February 26, 2016 14:04
Pressure BC for combustion chamber Giuki FLUENT 1 July 19, 2011 12:35
Hydrostatic pressure in 2-phase flow modeling (CFX4.2) HB &DS CFX 0 January 9, 2000 14:19
Hydrostatic pressure in 2-phase flow modeling (long) DS & HB Main CFD Forum 0 January 8, 2000 16:00


All times are GMT -4. The time now is 11:52.