CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT > Fluent Multiphase

DPM problem, controlling number of particles

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   April 11, 2022, 11:43
Default DPM problem, controlling number of particles
New Member
Join Date: Apr 2022
Posts: 12
Rep Power: 4
lolo7331 is on a distinguished road
I'm having trouble with setting up a simulation using Ansys Fluent. The problem I'm trying to model is a particle flow within a stream of water. Let's say the density of particles is 1000 kg/m^3 and the particle diameter is uniform with a diameter of 0.01 m. The volume of a particle should be equal to = d^3*pi/6, so it turns out to be equal to 5.236e-7 m^3, the mass should be as following 5.236e-4 kg.
I'm using the surface injection type, with a total flow rate of 5.236e-4 and parcel release method of constant-number (Particle number in parcel = 1) which in theory should give me a injection of 10 particles(and parcels) with a mass of 5.236e-3 kg. Start time of injection is 0, end time is 1 sec. Time step of simulation is set to 1, DPM step length factor is also set to 1.
The problem I'm running into is nothing is being injected when using the total flow rate of 10 (or 1) particles. But insted, when I set the mass flow rate of 100 particles, I get the injection of 71 particles(and parcels) in the stream if Scale Flow Rate To Face Area is ticked on, if not I get nothing injected. Does somebody know what the problem could be?

Last edited by lolo7331; April 11, 2022 at 14:58.
lolo7331 is offline   Reply With Quote


ansys, dpm, fluent, particle

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
[Other] Can't Shake Erros: patch type 'patch' not constraint type 'empty' BrendaEM OpenFOAM Meshing & Mesh Conversion 12 April 3, 2022 18:32
Foam-Extend 4.0 simpleFoam motorbike parallel error? EternalSeekerX OpenFOAM Running, Solving & CFD 0 May 10, 2021 04:55
Problem with decomposePar tool vinz OpenFOAM Pre-Processing 18 January 26, 2011 02:17
DecomposePar unequal number of shared faces maka OpenFOAM Pre-Processing 6 August 12, 2010 09:01
[Commercial meshers] Trimmed cell and embedded refinement mesh conversion issues michele OpenFOAM Meshing & Mesh Conversion 2 July 15, 2005 04:15

All times are GMT -4. The time now is 03:07.