Dyson Air Multiplier realistic airflow

broberts · February 17, 2016, 16:02

Hi,

I'm trying to model air flow from a cross section of a Dyson AM06 in 2D. I'm using Ansys Fluent, k-epsilon, realizable, standard wall fn. The issue is the air flow dissipates too quickly and is not realistic of how far the air does actually travel. Changing the turbulence settings of the inlet doesn't seem to make any difference.

Could anyone advise on this?

Regards,

flotus1 · February 17, 2016, 16:19

Be descriptive.
Show how exactly you tried to model the case, including a view of the whole computational domain with a description of all boundary conditions.
Show the mesh you used and the solver settings. Steady/transient, number of time steps/number of iterations. What do the residuals look like...

The first problem I see here: if you are going to model this in 2D, you have to use axisymmetric 2D instead of planar 2D.

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February 17, 2016, 16:19		#2
flotus1 Super Moderator Alex Join Date: Jun 2012 Location: Germany Posts: 3,399 Rep Power: 46	Be descriptive. Show how exactly you tried to model the case, including a view of the whole computational domain with a description of all boundary conditions. Show the mesh you used and the solver settings. Steady/transient, number of time steps/number of iterations. What do the residuals look like... The first problem I see here: if you are going to model this in 2D, you have to use axisymmetric 2D instead of planar 2D.