[mm391]

Hello,

I have modelled a basic impinging jet with the nozzle diameter 0.016m and at a Reynolds Number of 90,000 and a H/d ratio of 10.

I have had the following message (which I have attached in terms of a screen shot) from Fluent when I try to run it.

My boundary conditions are shown on the other attachment labelled BC's.

My solution setup is:

Density Based
Energy Equation - On
Spalart-Allmaras
Air as Ideal Gas
Operating Conditions = 0 pressure
Pressure-far-field - Gauge pressure 101325Pa at 288K
Velocity-Inlet - X velocity = 82.166m/s, Pressure = 101325Pa, Turbulent Intensity 0.01%, Hydraulic Diameter = 0.016 at 288K
Solution Method is Implicit

Can anyone shed some light on why I am getting the error and divergence message. I am teaching myself this program and am struggling with this bit.

Also would I need to scale the mesh so that I am getting the appropriate readings even though my geometry is exactly the size that it will be in my experiment?

Any help would be hugely appreciated.

Many Thanks

Mark.

[Far]

may be placing far field at larger distance help you in getting good convergence.