CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

Contours of Total Energy "exploding"/Vof not showing

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 20, 2020, 14:59
Default Contours of Total Energy "exploding"/Vof not showing
  #1
New Member
 
Clemens W.
Join Date: Jan 2020
Posts: 1
Rep Power: 0
3deepsea5me is on a distinguished road
Hey there,
first of all for my bad title but I simply couldn't figure a better way to phrase this. Also I am a complete beginner in CFD and have no background in engineering/physics whatsoever so forgive me my ignorance.
I basically want to simulate hot water flowing from 3 small inlets into cold water in an "open" tank (so all the walls are outlets).
Here is my mesh: (the inlets on the bottom are really small if you cant see them on the pic.

I used the Multiphase Volume of Fluid Model and turned Energy On.
When I now start my calculation it looks like this -> so far so good.
The 4th frame looks like this .
But the 5th frame the total energy "explodes" .
Is this a bug?
If I let the calculation run its course it normalizes and shows me expected results. Or is this maybe a problem with my calculation?
The cold water in my case has a temperature of 280 Kelvin while the inflowing water has a temperature of 370 Kelvin.

Now my second Problem is that I would like to display the contours of Volume of fraction and also display the contours of the temperature of the mixture which I assume is Total Energy although I would rather display the temperature in Kelvin.
But every time I manage to display the contours of Total Energy the Countours of Vof stay completely blue. I've also had it that the Contours of the VoF where showing but the Contours of the Total Energy weren't showing at all (just showing a blue model).
As seen here:
As you maybe can see there is a lot of confusion going on with all of this stuff. I'd appreciate any help.
Thank you and have a great day
3deepsea5me is offline   Reply With Quote

Reply

Tags
contours, explosion, temperature, total energy, vof

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
Segmentation fault (core dumped) zhoubiao1088 OpenFOAM Running, Solving & CFD 4 March 13, 2017 21:06
Contours Showing Differences in CFD-Post a.sarami CFX 3 April 11, 2014 03:21
Natural convection, problems with total energy balance MdoNascimento STAR-CCM+ 0 March 13, 2014 13:15
variable density in single fluid simulation not running with total energy viking CFX 2 September 18, 2012 21:19
Why FVM for high-Re flows? Zhong Lei Main CFD Forum 23 May 14, 1999 14:22


All times are GMT -4. The time now is 13:31.