Lateral flows in a 2D mesh

[SaraA]

Hi everyone,

In my HEC-RAS model I have several lateral flow hydrographs. Is it possible to put lateral flows in a 2D mesh in HEC -RAS 5.0.5? similar as you can do for river stations in 1D in unsteady flow data.

Thank you,

Sara

[cameron]

You can add internal boundary conditions into the 2D mesh in 5.0.5 so yes you can add in a lateral flow.

[SaraA]

Hi,

Could you tell me in which part of the manual is explained this part of the internal boundary conditions in a 2D mesh?

I am looking into HEC RAS 2D Modelling user’s manual (Version 5.0) but I could not find it.

Thank you,

Sara

[Scott Miller]

Look into the Version 5.0.4 Supplemental User’s Manual, section 2.3.

Or just draw boundary conditions inside the mesh. The RAS will distinguish between internal and external boundary conditions. The key thing now with 5.0.4 & .5 is that external boundary conditions must be drawn outside the mesh.

[SaraA]

Thank you, I found it 🙂

[Author]

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