CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > REEF3D

sediment transport in complex topography

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

Like Tree1Likes
  • 1 Post By harenaobsidet

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 8, 2024, 08:31
Default sediment transport in complex topography
  #1
New Member
 
全国
Join Date: Apr 2022
Posts: 9
Rep Power: 4
277649496 is on a distinguished road
I am honored to be able to use this CFD model as my research tool and I think it is a very powerful tool and allows me to express my gratitude to the developers.
In recent work, we plan to study scour around the bridge in a given topography. I noticed a similar post where someone suggested using F in DIVEMESH, and I was wondering if G10 1 in DiveMESH and G50 1 in REEF3D would have the same effect in three dimensional topography. (F commands don't seem to meet our needs. )
Another problem is that since the parameter S57 is a variable for us, how to use S57 as the mud surface on the curved terrain.
I would be grateful if anyone could help me with these two questions. Here are my control files. The version of my program is 220419
ctrl.txt

control.txt

floating.zip

f3a48bcd85c1140175529fc2c5391aa.jpg
277649496 is offline   Reply With Quote

Old   April 9, 2024, 04:48
Default
  #2
New Member
 
Alexander Hanke
Join Date: Dec 2023
Location: Trondheim
Posts: 25
Rep Power: 3
harenaobsidet is on a distinguished road
Hei.
I'd recommend to updated REEF3D to its latest release if possible. In its latest releases both F in DIVEMesh and G50 in REEF3D do no longer exist.
Regarding your other question, do you want to cover your terrain with a layer of mud? If so, I don't know how that would work currently. The sediment is currently treated as uniform. You could add a non-erodible solid under your topo, but I think that is it.
__________________
Alexander Hanke
Team REEF3D
www.reef3d.com
harenaobsidet is offline   Reply With Quote

Old   April 9, 2024, 06:54
Default
  #3
New Member
 
全国
Join Date: Apr 2022
Posts: 9
Rep Power: 4
277649496 is on a distinguished road
In the newest version 2403, Case 10_13 Shoaling over Irregular Bathymetry still exist the command G 50 1. This makes me suspect that the G50 has been available as a hide command.
As for my second problem specifically, I want the black dots (generated by geo.dat as shown in the figure) below to be considered mud. It's a shame if that doesn't happen.
Anyway, thanks for your answer
277649496 is offline   Reply With Quote

Old   April 9, 2024, 07:11
Default
  #4
New Member
 
Alexander Hanke
Join Date: Dec 2023
Location: Trondheim
Posts: 25
Rep Power: 3
harenaobsidet is on a distinguished road
The tutorial is apparently a bit outdated. There is no G50 in the code anymore.

If you are fine with the entire bed being composed of mud, that is possible. If you remove S57, everything below your geo.dat surface should be considered as topography and therefore be erodible mud.
Also why are you using B20 1? I would expect no-slip for velocities.
And you don't have to use a floating body for your bridge. You can use S1 to read in a .stl for your bridge in DIVEMesh. I have never tried it personally, so it might not work as hoped.
277649496 likes this.
__________________
Alexander Hanke
Team REEF3D
www.reef3d.com
harenaobsidet is offline   Reply With Quote

Old   April 9, 2024, 07:50
Default
  #5
New Member
 
全国
Join Date: Apr 2022
Posts: 9
Rep Power: 4
277649496 is on a distinguished road
I understand your answer, removing S57 still means that the current topography can be (considered mud) deformable. In addition, thank you for your guidance on other aspects
277649496 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
PhD position - REEF3D & sediment transport valgrinda REEF3D News & Announcements 0 May 16, 2023 09:03
Issues with using state files for sediment transport Orrin REEF3D 4 March 18, 2022 03:16
sediment transport civil karthik Main CFD Forum 0 September 22, 2016 03:31
Free Surface Flow with Sediment Transport M. Riffai CFX 3 September 5, 2013 09:45
Re: Can I simulate sediment transport with FLUENT li li FLUENT 0 October 21, 2003 20:42


All times are GMT -4. The time now is 12:09.