Hello,
The n-in-parcel can be less than 1 [not less than 0]. This depends on the particle mass and the parcel mass which in turn depends on the mass flow rate and the parcel release method. Yes, you can output your scalar using DEFINE_DPM_OUTPUT.
You can find more information about parcels here [https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v221/en/flu_ug/flu_ug_sec_dpm_concepts.html?q=n-in-parcel]
Regards,
SD
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