|
[Sponsors] |
January 9, 2016, 13:29 |
no value changes during transient simulation
|
#1 |
New Member
Dobromił Pszenny
Join Date: Jul 2015
Posts: 20
Rep Power: 11 |
Dear CFD Online users,
I am working on simple 2d heat transfer and solidification model. Model contains two cell zones - layer of pcm material surrounding oil pan and oil pan itself. Steady analysis worked fine, but my goal is to examine how long does it takes for pcm to completly solidify and to see how temperature is distributed over time, so I'v changed mode to transient and set up some animation. Unfortunately, it seems like heat flow is stopped - I can't noticed any value change over time. What am I doing wrong? Cas file in attachment. https://www.virustotal.com/en/file/f...is/1452359733/ |
|
January 9, 2016, 18:00 |
|
#2 |
New Member
Jura
Join Date: Jan 2016
Posts: 1
Rep Power: 0 |
Im having same issue. Modelling simple 3d grow-box with several vents and do want see temperature distribution over time -steady analysis works, transient not, please help
|
|
January 12, 2016, 14:03 |
|
#3 |
New Member
Dobromił Pszenny
Join Date: Jul 2015
Posts: 20
Rep Power: 11 |
please someone help me
|
|
January 13, 2016, 10:51 |
|
#4 |
Senior Member
Join Date: Mar 2014
Posts: 375
Rep Power: 13 |
not changing transient results mean the solution has reached a steady state. i see running wrong in that. transient results will at some time reach steady state as well.
imagine opening your rooms door, the temperature change inside the room is a transient process but will eventually reach steady state. |
|
January 13, 2016, 12:13 |
|
#5 |
New Member
Dobromił Pszenny
Join Date: Jul 2015
Posts: 20
Rep Power: 11 |
Transient simulation approach steady state after ten 10-sec time steps? Dont think so. Moreover, temperaure at both cellzones doesnt change at all and its level is equal to initialization temperature (310 K for example). Temp at whole cell zones is constant, this is not steady state
|
|
January 13, 2016, 16:46 |
|
#6 | |
Senior Member
Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,748
Rep Power: 66 |
Quote:
|
||
January 13, 2016, 17:22 |
|
#7 |
New Member
Dobromił Pszenny
Join Date: Jul 2015
Posts: 20
Rep Power: 11 |
"Interface" between them is a wall type boundary condition. Actually 2 bc, because fluent automatically creates a shadow boundary condition - is that correct? I've set up a "coupled" condition.
|
|
Tags |
animation, heat transfer, solidification, time, transient |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Transient RANS Simulation | Bazinga | Main CFD Forum | 5 | June 21, 2017 12:21 |
Question on transient simulation in OpenFOAM and FLUENT | nicklj | OpenFOAM Running, Solving & CFD | 4 | May 8, 2014 23:30 |
Transient simulation diverges | Graduation | ANSYS | 0 | February 28, 2012 08:13 |
How to integrate variable in a transient simulation? | nprace | CFX | 4 | January 9, 2012 09:59 |
Beginning a Transient Simulation | Norflow | CFX | 2 | October 7, 2011 01:38 |