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Forum: FLOW-3D

December 9, 2013, 12:26

Replies: 6

urgent problem : fluid height

Views: 2,049

Posted By JBurnham

Outflow boundaries are only correct when Froude...

Outflow boundaries are only correct when Froude number Fr > 1 (supercritical flow) at the boundary. If flow is subcritical (Fr <= 1), then Outflow will drain out the flow, so use a pressure-type...

Forum: FLOW-3D

December 9, 2013, 11:00

Replies: 6

urgent problem : fluid height

Views: 2,049

Posted By JBurnham

An initial fluid region is the same. It is fluid...

An initial fluid region is the same. It is fluid location at t = 0. Check that you have Gravity physics active, and that gz is negative (pointing downward), e.g. gz = -9.81 (if you're using SI units).

Forum: FLOW-3D

December 9, 2013, 10:47

Replies: 6

urgent problem : fluid height

Views: 2,049

Posted By JBurnham

It sounds like you set it up right, just like the...

It sounds like you set it up right, just like the Example simulation (Flow Over a Weir). Did you make an initial fluid region for fluid at t = 0? You should do that as well to speed up the time to...

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