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Sediment is non-conservative when using 2-D setups |
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January 20, 2022, 01:11 |
Sediment is non-conservative when using 2-D setups
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#1 |
New Member
Bingchang Zhang
Join Date: Aug 2021
Posts: 9
Rep Power: 5 |
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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January 21, 2022, 11:55 |
Verifying
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#2 |
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Hernest
Join Date: Aug 2021
Posts: 23
Rep Power: 5 |
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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January 21, 2022, 12:04 |
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#3 | |
New Member
Bingchang Zhang
Join Date: Aug 2021
Posts: 9
Rep Power: 5 |
Quote:
Thanks for the reply, attached is the input files, and geo.dat. Regards, Bingchang |
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January 23, 2022, 13:58 |
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#4 |
New Member
Hernest
Join Date: Aug 2021
Posts: 23
Rep Power: 5 |
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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January 23, 2022, 22:39 |
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#5 | |
New Member
Bingchang Zhang
Join Date: Aug 2021
Posts: 9
Rep Power: 5 |
Quote:
Hi Hernest, Please see the attached files, I appreciate your help. Regards, Bingchang |
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