[ajayjatoliya]

Hello REEF 3D Team,
I am trying to solve scour around a pier, but unable to get the topography of the scour near the pier. Could you please help to resolve this issue

Control file #

C 11 6
C 12 3
C 13 3
C 14 7
C 15 21
C 16 3

B 1 0.025
B 10 0.0 4.0 0.0 2.0 0.0 0.8
O 33 2.5 1.0 .20

M 10 14

Ctrl file #
B 10 1
B 50 0.0001
B 90 1
B 92 2
B 91 0.5 0.5
B 96 0.5 1.0
B 98 2
B 99 2


D 10 4
D 20 2
D 30 1


F 30 3
F 40 3
F 42 1.0

F 60 0.5


I 12 1


N 10 14
N 11 11
N 40 3

N 41 90.0
N 47 0.25

M 10 14


P 10 1
P 30 0.05
P 52 0.025
P 53 1
P 54 500


S 10 2
S 11 1
S 16 3
S 17 1
S 37 1000
S 43 100
S 57 0.1
S 77 0.0 6.0
S 80 1
S 90 1
S 91 1000
S 93 30
S 100 1




T 10 2



W 22 -9.81

[kamath]

Hi Ajay,

Could you elaborate on your problem? What difficulty are you facing?

[ajayjatoliya]

I am unable to get scour hole around the pier and I have put the sediment thickness = .1 m but not able visualize it in ParaView

[kamath]

I am assuming your simulation is not crashing.

What do you get when you take a contour for topo= 0 on the vtu files opened in Paraview?

[ajayjatoliya]

While putting topo=0 I am not getting scour topography

[ajayjatoliya]

While putting topo = 0, in the information cell it shows an empty data cell. can you please is there anything that we need to add in the ctrl file?

[Ronja]

Hi Ajay,


I am using the newest version of the code. I assume, you are doing so as well.


Regarding your problem of not getting any values for the topography: I can not reproduce your problem with your input files that you uploaded. I am getting the interface sediment-water with the contour/clip. You should see it already in the first printout. The sediment bed with a height of 0.1m is reproduced and the still water level at 0.5m as well.



However, I see some main issues:
ctrl.txt:
- You need to consider your wave input (right now it is a kind of steep wave), producing high velocities, consider if this is the input you want
- check also the decoupling of the hydrodynamic timestep and the sediment timestep, the wave might not have reached the pier while the sediment total time is already well-advanced; you could consider to use a later starting time for the sediment algorithm.

- S 17 is not given as an option in the guide. If there is no particular reason why you are using S 17 1, you should not use it.
- Depending on what exactly you try to reproduce, you may need a longer channel, or e.g. not include the wave generation nor the beach zone into the active sediment area. At least be aware.


control.txt:
- please use the S-option for Solid (S 33) and not O 33


Hope that helps

[ajayjatoliya]

Thank you, Ronja
I have also one more issue, after a certain period, there is no change in bed elevation it is showing equal to the initial bed level (last two columns of attached png file). could you please help what I need to change in the ctrl and control file.

[kamath]

Check the console out put and see if how long the sim has run wrt to waves and sediment iteration