[RyGuy]

Hello Fluent Users,

I am working on a project regarding the simulation of a process called Low Pressure Cold Spray (also known as Kinetic Spray). I am trying to analyze theoretically the single and multi-phase flow of the process and compare it with experimental data.

Therefore I have created my geometry in Gambit (simple 2d geometry of a convergent-divergent nozzle) and meshed the geometry with quad cells.

I have exported the mesh into Fluent and due to the nature of the process the procedure for setting up the simulation is as follows:

I defined the process using the density based implicit solver, 2D, Steady time enabling the energy equation for thermal considerations. I have selected the k-epsilon standard model and am only considering a single phase supersonic compressible flow. I am using an operating pressure of zero since mach number is greater than 0.1

I have found from literature that it would be ideal to consider the ideal-gas law for the material properties (air) and also the sutherland viscosity law for better accuracy in terms of compressibility and viscous effects.

My main inlet pressure and temperature ranges are 5-10 bars and 500-1000 K, respectively.

When I try to incorporate the ideal gas las for density of air and iterate to get a solution Fluent gives me an Error: floating point error and Error: Object () prompt.

How do I avoid this error? And, if anyone who fully understands Fluent can optimize my procedure for this process can you please provide your input?

Your replies are greatly anticipated....
Thanks in advance!

Ryan