DPM model in closed system?

dawid.kruczek · July 6, 2022, 13:37

Hello! Is it possible to create a dpm model without inlet and outlet? I'm interested in introducing particles into the fluid that is under the cone. The entire simulation takes place in a closed cylinder-cone system. Image in attachment.

alainislas · July 8, 2022, 04:02

Yes, I see 2 ways of achieving this.

(1) The injection file. For that you’ll need to specify parameters such as
(( x y z u v w diameter temperature parcel-mass mass n-in-parcel time flow-time) name)
in a raw ascii file. You can control the injection by start-time and stop-time.

(2) Alternatively, if during the pre-processing you prepare a mesh that distinguishes a fluid region where the parcels are to be injected. You can later use an “artificial” surface injection selecting the proper int_fluid region. Then, the parcels will “sprout” from the face centres of such region.

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July 8, 2022, 04:02		#2
alainislas Senior Member Alain Islas Join Date: Nov 2019 Location: Mexico Posts: 142 Rep Power: 6	Yes, I see 2 ways of achieving this. (1) The injection file. For that you’ll need to specify parameters such as (( x y z u v w diameter temperature parcel-mass mass n-in-parcel time flow-time) name) in a raw ascii file. You can control the injection by start-time and stop-time. (2) Alternatively, if during the pre-processing you prepare a mesh that distinguishes a fluid region where the parcels are to be injected. You can later use an “artificial” surface injection selecting the proper int_fluid region. Then, the parcels will “sprout” from the face centres of such region.