Spillway modelling: doubt about dimension

arsatan80 · August 5, 2009, 08:56

Dear All,

how do you set the dimensions of your Flow3d model?

In the case of Flow over a Spillway, do you model the real dimensions of the

spillway or it is better to scale them?

Thanks in advance.

Fred

H.C · August 5, 2009, 11:00

it might be preferable to model the real dimension. thats one of the advantages using CFD instead of doing experiment. if you scale the geometry in CFD or experiment, you most likely will also need to scale the flow velocity, fluid properties, etc.

August 5, 2009, 08:56	Spillway modelling: doubt about dimension	#1
arsatan80 New Member federico Join Date: Aug 2009 Posts: 2 Rep Power: 0	Dear All, how do you set the dimensions of your Flow3d model? In the case of Flow over a Spillway, do you model the real dimensions of the spillway or it is better to scale them? Thanks in advance. Fred

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August 5, 2009, 11:00		#2
H.C Member Join Date: Mar 2009 Posts: 40 Rep Power: 17	it might be preferable to model the real dimension. thats one of the advantages using CFD instead of doing experiment. if you scale the geometry in CFD or experiment, you most likely will also need to scale the flow velocity, fluid properties, etc.