[Michael VF]

Hi all,

I want to simulate dust in water pipe. Dust specified by small ammount and negligibly small size. Dust does not affect the flow. For the pipe I have .stl file.
I am intersted in tracks of dust particles. I see, that openFoam has tools for lagrangian approach calculation.
I think that icoUncoupledKinematicParcelFoam is suitable in my case. Am I right? What is the most suitable solver for my problem (gives the most realistic results)?
Also I find particleTracks utility. I can't find information in which cases it can be applied? Only when I use lagrangian approach solver, isn't it?

[gschaider]

Originally Posted by Michael VF

Hi all,

I want to simulate dust in water pipe. Dust specified by small ammount and negligibly small size. Dust does not affect the flow. For the pipe I have .stl file.
I am intersted in tracks of dust particles. I see, that openFoam has tools for lagrangian approach calculation.
I think that icoUncoupledKinematicParcelFoam is suitable in my case. Am I right? What is the most suitable solver for my problem (gives the most realistic results)?
Also I find particleTracks utility. I can't find information in which cases it can be applied? Only when I use lagrangian approach solver, isn't it?

An option would be (I say that a lot of times, sorry) swak4Foam: the last release has a functionObject that allows you to add lagrangian particles to every solver without modifying it (you only have to specify which fields to use for velocity etc - see Examples/Lagrangian). That doesn't allow you to couple back but you said you don't need it you say

[Michael VF]

I'm really newbie to OpenFoam. I see, that swak4foam is not the "straight forward" tool for particle tracking (and may be too complex for me). Dou you mean that there is no "standard (out of the box)" solution for lagrangian approach in OpenFoam?
In simple words: I don't need to simulate dust with some specific characteristics; I just want to watch at water flow using Lagrangian approach. Can icoUncoupledKinematicParcelFoam (or some other applications from Lagrangian folder) solve this problem?

[gschaider]

Originally Posted by Michael VF

I'm really newbie to OpenFoam. I see, that swak4foam is not the "straight forward" tool for particle tracking (and may be too complex for me). Dou you mean that there is no "standard (out of the box)" solution for lagrangian approach in OpenFoam?
In simple words: I don't need to simulate dust with some specific characteristics; I just want to watch at water flow using Lagrangian approach. Can icoUncoupledKinematicParcelFoam (or some other applications from Lagrangian folder) solve this problem?

Usually lagrangian tracking is "bolted" onto an existing solver. If the name of the solver says "uncoupled" the particles do not influence the fluid. So if the name of the solver matches the one you're using so far you're fine.

My hint was referring to the case were no such solver exists in $FOAM_SOLVERS/lagrangian. Then you can "bolt" an uncoupled lagrangian particle class onto an existing solver without programming.

Also check out uncoupledKinematicParcelFoam which takes a fluid field (which is assumed to be stationary) and solves the lagrangian particles on it (nice if you already have a flow solution)

[randolph]

Originally Posted by gschaider

Usually lagrangian tracking is "bolted" onto an existing solver. If the name of the solver says "uncoupled" the particles do not influence the fluid. So if the name of the solver matches the one you're using so far you're fine.

My hint was referring to the case were no such solver exists in $FOAM_SOLVERS/lagrangian. Then you can "bolt" an uncoupled lagrangian particle class onto an existing solver without programming.

Also check out uncoupledKinematicParcelFoam which takes a fluid field (which is assumed to be stationary) and solves the lagrangian particles on it (nice if you already have a flow solution)

what's the different between icoUncoupledKinematicParcelFoam and uncoupledKinematicParcelFoam?