Learning Forum

[manuelmoncada]

Dears, 

Since version 2023 R2, it was added the posibility to calculate the particle mass flow in and out curves (before was just particle mass in or out) and I would like to know more details of the calculation method, for example, between which time steps it is calculated, if it is a mean-mass flow rate between those time steps, what is the criteria for a partilce be considerer out the domain, etc.

Manuel Moncada

[Jackson Gomes]

Hello, Manuel.

The flow curves calculated by the solver are constructed by monitoring Smoothed Particle Hydrodynamics (SPH) elements traversing a geometry within the time interval between two outputs. The value of a point on the curve at a given output is the algebraic sum of the masses of all elements that have traversed the geometry during the interval between that output and the previous one, divided by this time interval. In other words, it represents an average value over that interval. Particles traversing in the direction of the normal vector to the geometry are considered with "positive" mass in the sum, while those traversing in the opposite direction are considered "negative."

Best Regards.

[manuelmoncada]

Hi Jackson!

Thank you for your reply. In the case of a DEM simulation (not SPH) there are no SPH particles. Also, how it is defined when a particle traversed a geometry? 

Regards,

Manuel

[Jackson Gomes]

Hello, Manuel.

You can consider this for all kind of particles.

Regards.