Hi, could you please advise me.
I want to analyze the flow in the river with waterfall, suppose the ratio between the model and the prototype is
1:50, to scale the flow velocity i use Froude number. But i have a doubt when it comes to waterfall elevation.
Do i need to multiply the gravity with 50 like this (0,0,-50) instead of (0,0,-1) or not ?
Do i need to activate hydrostatic pressure or it's already considered in free surface analysis.
another question
First figure, this guy in his tutorial defined the gravity direction and the gravity acceleration value below:
in this figure from Autodesk webinar, they kept the value of the component as 0
which one is correct
Solved! Go to Solution.
Solved by frederic.gaillard.7. Go to Solution.
Hello @eng.abass5,
Fred
I am grateful for your replay, but how can i transform the effect elevation on velocity profile between the model and the prototype ? is it a linear transformation ?
this for the flow at the same horizontal level, basically Froude number.
what i am talking about is the waterfall, when water fall from the top.
Hello @eng.abass5
You can understand the Froude number as a ratio between the kinematic energy and the potential energy. In your case the characteristic lenght ''l'' will become h, the height.
hope it helps
Fred
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