Calculation of Number of Particles Per Parcel in Unsteady DPM Simulations — Lesson 4

How are the number of particles per parcel calculated for unsteady DPM simulations?

While setting up an unsteady DPM simulation, evaluating the number of particles per parcel may be done to avoid particle numbers <1. This makes the setup unphysical. A very large particle number, on the other hand, may result in issues such as high localized sources.

The number of particles per parcel can be evaluated as (parcel mass/particle mass). Parcel mass can be obtained as (injection mass flow rate * injection time-step size/number of streams per injection). Particle mass can be calculated as (particle volume * particle material density).

The attached spreadsheet can be used to quickly key in data to come up with the number of particles per parcel.

You can access the relevant files by clicking on this link: Download Files

For more details, please refer to the document below: