DPM bubble flow particles Injection number

Zebulun · June 27, 2022, 11:19

Hi everyone. I am doing bubble DPM and need to inject a given amount of bubbles, now how do I set the bubble volume fraction I want to inject, or how do I know how many bubble particles is the right number.

alainislas · June 29, 2022, 10:32

First, what are the details of your injection? type, bubble diameter (fixed or PSD) , etc ..

You can control the injection by mass flow rate, start time and stop time. Note that in DPM mass flow rate is a DISCRETE mass flow rate, i.e. mdot = number of particles per sec * particle mass

June 27, 2022, 11:19	DPM bubble flow particles Injection number	#1
Zebulun New Member JiangZeping Join Date: Apr 2021 Posts: 10 Rep Power: 5	Hi everyone. I am doing bubble DPM and need to inject a given amount of bubbles, now how do I set the bubble volume fraction I want to inject, or how do I know how many bubble particles is the right number.

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June 29, 2022, 10:32		#2
alainislas Senior Member Alain Islas Join Date: Nov 2019 Location: Mexico Posts: 142 Rep Power: 6	First, what are the details of your injection? type, bubble diameter (fixed or PSD) , etc .. You can control the injection by mass flow rate, start time and stop time. Note that in DPM mass flow rate is a DISCRETE mass flow rate, i.e. mdot = number of particles per sec * particle mass