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Sediment is non-conservative when using 2-D setups

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Old   January 20, 2022, 01:11
Default Sediment is non-conservative when using 2-D setups
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Bingchang Zhang
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Hi,

I tried to validate the sediment model against Mao (1968)’s experiments. The experiments parameters are: the water depth was 0.35 m, the diameter of the pipeline was D=0.1m, the sediment diameter was d50=0.00036m, inflow rate is 0.4m/s (far-fields Shields number is 0.065).

At first, I tried to use a 2-D setup (only 1 layer mesh along the pipeline), there is no sand dune at the downstream side of scour hole. that reflects the sediment may not be conservative.
I also tried a 3-D setup (3 layers mesh along the pipeline), the sand dune appears, thus, I think the nonconservation problem only occurs 2-D setup.

Could you please check this? (attached is my simulation result). Thanks in advance.

Regards
Bingchang
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Old   January 21, 2022, 11:55
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Hernest
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Hello Bingcz
You could share your "control" and "ctr" input files to check in some of the commands if there is something preventing what you want to get. please.
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Old   January 21, 2022, 12:04
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Quote:
Originally Posted by raul_xusernamex_ View Post
Hello Bingcz
You could share your "control" and "ctr" input files to check in some of the commands if there is something preventing what you want to get. please.
Hi,

Thanks for the reply, attached is the input files, and geo.dat.

Regards,
Bingchang
Attached Files
File Type: txt ctrl.txt (431 Bytes, 22 views)
File Type: txt control.txt (163 Bytes, 17 views)
File Type: txt geo.dat.txt (37.0 KB, 19 views)
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Old   January 23, 2022, 13:58
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Hernest
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hi bingcz
I have not been able to run the DiveMESH input file where the geo data is embedded.
It shows me the following message.

DIVEMesh (c) 2008-2020 Hans Bihs

:: Open source meshing

v_210519

Reading control
open geo.dat and count the entries..


after that there is no progress and the program is stopped indefinitely.
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Old   January 23, 2022, 22:39
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Quote:
Originally Posted by raul_xusernamex_ View Post
hi bingcz
I have not been able to run the DiveMESH input file where the geo data is embedded.
It shows me the following message.

DIVEMesh (c) 2008-2020 Hans Bihs

:: Open source meshing

v_210519

Reading control
open geo.dat and count the entries..


after that there is no progress and the program is stopped indefinitely.

Hi Hernest,

Please see the attached files, I appreciate your help.

Regards,
Bingchang
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File Type: zip inputFiles.zip (3.8 KB, 21 views)
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