|
[Sponsors] |
May 25, 2016, 17:53 |
Temperature stratification simulation in CFX
|
#1 |
New Member
David
Join Date: May 2016
Posts: 4
Rep Power: 10 |
Hello,
I'm modeling a reservoir with temperature stratification and to see temperature change with cold inflow. Firstly, I set the reservoir has only one temperature (25 C), so the density in the reservoir is also constant (997 kg/m^3), Buoyancy Reference Temperature is 25 C, inflow is 4 C with speed of 2m/s. The result is not bad, we can see the cold water plunge in to the reservoir, show in the first picture. Secondly, I set the reservoir has two layers with different temperature (25 C and 4 C), and the density in different layers is 997 kg/m^3 and 1000 kg/m^3 respectively, Buoyancy Reference Density is 997 kg/m^3, inflow is 4 C with speed of 2m/s. Here I change the material option (only change the density distribution). The result is terrible, we cannot see any plunging in to the reservoir, show in the second picture. I'm sure the boundary condition (pressure) is no problem, but I'm wandering the problem is in Material Setting (only change Density)? I keep material group to be Water Data, Constant Property Liquids. Is that all right? Need I change Reference State (Reference temperature & Pressure)? Thank you in advance! Marble |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Temperature gradient in CFX | Chander | CFX | 5 | January 7, 2015 03:00 |
convergenceof natural convection prob. in cfx | cpkewat | CFX | 15 | January 31, 2014 06:29 |
NPSH3% simulation with ANSYS CFX | ragazzaccio79 | CFX | 11 | October 16, 2012 03:25 |
CFX thermo-fluid 2D simulation problems | maryliz | CFX | 6 | October 31, 2011 23:26 |
Importing Temperature Field from CFX to ANSYS | baserinia | ANSYS | 2 | March 1, 2010 10:52 |