|May 31, 2015, 05:21||
how to simulate particle jumping out from a water flume cavity
Join Date: Mar 2015
Posts: 14Rep Power: 3
i have done some experiments in a water flume which has a rectangular cavity (please see attached pic).
during my experiment, i put a small particle in the cavity, and then the particle automatically jumps out of the cavity, perhaps due to velocity fluctuations and eddies in the cavity.
till now i have been able to match the velocity profiles from the experiment to the fluent simulation, but i am not able to simulate this jumping of particles out of the cavity.
for turbulence, i am using k-epsilon model with steady solver and i got converged results.
i tried using DPM for modeling the particle, but the particle never jumps out in fluent when particle density = 1.2 g/cc, although it jumps out when density < water density; the latter is of course for obvious reasons. but that means my DPM modeling is correct, isn't it?
so how do i simulate this particle jumping out?
1. do i need to use other turbulence models, not k-epsilon? if yes, then which one.
2. do i need to use transient solver, not steady? if so, why?
3. i have tried steady and unsteady DPM both, but none of them helps..still which DPM should i use - steady or unsteady?
problem with unsteady DPM is that it doesn't give the particle trajectory.
please let me know if u have any suggestions.
thanks a lot
|June 1, 2015, 01:29||
Join Date: Jul 2013
Posts: 28Rep Power: 5
hey thanks for suggesting cfdem..
but it takes lot of time to learn a new software
i have already spent some time with fluent, so was expecting it can be done with fluent too.
anyway, any idea on how to simulate the phenomenon.
do i need to use some other turbulence model not k-epsilon, transient, steady, anything ?
thanks for ur help :-)
|cavity flow, dpm model, fluent, jumps|
|Thread||Thread Starter||Forum||Replies||Last Post|
|How to evaluate solution for inert particle in water||sujay||CFX||6||April 18, 2011 08:35|
|Particle Tracking - Can't define water particles||CFDLife||CFX||2||October 3, 2008 06:12|
|Use smoke density to simulate water||Wei-zhi Liao||Main CFD Forum||0||February 13, 2006 04:06|
|Water vapour condensation in CFX-5.7.1||hdj||CFX||1||November 27, 2005 08:15|
|How can I simulate a fan in a cavity||Elvia Martinez||CFX||1||September 7, 2005 09:49|