Learning Forum

[rahul_kv]

I am trying to do an erosion study in a pipe case in fluent with different concentrations like 1000 ppm and 2000 ppm, but in DPM injection, I saw the option of flow rate, velocity, and diameter of the particle. But How to set concentration in PPM? 

[Rob]

You don't. You need to convert your PPM data into mass for the injection. 

[rahul_kv]

Can you Please guide me on how to convert it into mass for injection and where to enter that converted mass? As in the Injection option in fluent, I can see the option to enter the flow rate (in kg/s). Is this the input that you mean?

[Rob]

Yes, injections work on kg/s.  Velocity then governs how quickly that mass enters the domain.