how to give no.of particles in DPM Fluent
 

Hi,
Iam modelling a multi phase flow in fluent with particle tracking. iam injecting the particles of diameter 4e-05m and densiy of 4000kg/m3. I have to inject 10,000 particles into the domain. But iam unable to find where to inject the particles in fluent. I tried for Parcel release method as standard,but it is showing a constant number of particles with out specifying the number of particles. and i tried changing it to inject by number, but the particles injecting are fluctuating per time step.

P.S: iam using Surface injection