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waterrocks

Link error in SRH2D

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Hi all

 

I am getting what I think is an error for a flow link in SMS/SRH2D:

 ==> NUMBER-OF-INTERNAL-FLOW-LINKS
     Enter: N_LINKS
     N_LINKS = total number of pairs of Internal LINKs specified in BC-TYPE

***************************************************************************
*  Internal LINKs have been specified using LINK Type with Nodestrings    *
*             Number of LINK Pairs =  1
*  Each link is defined by a pair of nodestringsv                         *
***************************************************************************

 ==> DEFINE-INTERNAL-LINK-Pairs-by-Nodestrings
 end of file _SIF.dat reached! start on-screen input!

 --> INTERNAL-LINK-FLOW-TYPE: for Link =  1
     Enter:  QTYPE
     where:
     QTYPE = CONSTANT, Time_Series or WEIR
 

 

 

Anyone have any clue what is going on? 

 

Thanks for reading

 

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Typically when SRHPre asks for “on screen input” it means that a required variable for the structure has not been provided. This usually means that something went wrong exporting the simulation and the variable was not written to the .srhhydro file or It was written in an incorrect format. Could you include a screenshot or copy of the text in the .srhhydro file? Also, what version of SMS are you using?

-Cody

Edited by calberts

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On 10/4/2018 at 7:54 PM, calberts said:

Typically when SRHPre asks for “on screen input” it means that a required variable for the structure has not been provided. This usually means that something went wrong exporting the simulation and the variable was not written to the .srhhydro file or It was written in an incorrect format. Could you include a screenshot or copy of the text in the .srhhydro file? Also, what version of SMS are you using?

-Cody

Hi Cody,  

Thanks so much for your reply. I am using 12.2.12.  I am pasting the .srhhydro file below:

Any help would be amazing because this has been driving me bonkers!

 

SRHHYDRO 30
Case "lower3712cfs"
Description "lower3712cfs"
RunType FLOW
ModelTemp OFF
UnsteadyOutput UNSTEADY
SimTime 0 1 2
TurbulenceModel PARABOLIC
ParabolicTurbulence 0.7
InitCondOption DRY
Grid "1mhybrid.srhgeom"
HydroMat "1mhybrid.srhmat"
MonitorPtFile "1mhybrid.srhmpoint"
OutputFormat XMDF ENGLISH
OutputOption 1
OutputInterval 1
ManningsN 0 0.02
ManningsN 1 0.07
ManningsN 2 0.07
ManningsN 3 0.035
BC 5 EXIT-Q
BC 8 EXIT-H
BC 9 INLET-Q
BC 10 INLET-Q
BC 11 EXIT-H
BC 12 MONITORING
BC 13 MONITORING
BC 14 MONITORING
IQParams 9 600 EN CONVEYANCE
IQParams 10 3112 EN CONVEYANCE
EQParams 5 250 EN
EWSParamsC 8 437.05 EN C
EWSParamsC 11 439.94 EN C
BC 3 WEIR
BC 4 WEIR
BC 6 WEIR
BC 7 WEIR
WeirNodestrings 1 3 4
WeirNodestrings 2 6 7
WeirParams 1 471 -999 75 EN GRAVEL
WeirParams 2 461 -999 55 EN GRAVEL
BC 1 LINK
BC 2 LINK
LinkNodestrings 3 1 2
LinkFlowType 3 CONSTANT
LinkConstantFlow 3 70 EN
LinkLagtimeMethod 3 Spec
LinkSpecifiedLagtime 3 3600

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Thanks for sharing the .srhhydro file, I believe Aquaveo has fixed this issue in SMS 12.3. As a workaround in SMS 12.2 try the following:

1. Export the simulation (Just choose "Export SRH-2D" and not "Save, Export, and Launch SRH-2D")

2. Open the .srhhydro file in a text editor and modify the last 5 lines to match the following lines:

LinkNodestrings 1 1 2
LinkFlowType 1 CONSTANT
LinkConstantFlow 1 70 EN
LinkLagtimeMethod 1 Spec
LinkSpecifiedLagtime 1 3600

3. Save the changes to the .srhhydro file in the text editor.

5. Launch the simulation (Just choose "Launch SRH-2D" and not "Save, Export, and Launch SRH-2D")

With these changes SRH should be good to run. Let us know if it still has issues.

-Cody

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