|
[Sponsors] |
strange Temperature Increaing when using species Transport and negativ Species Source |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
August 25, 2020, 10:34 |
strange Temperature Increaing when using species Transport and negativ Species Source
|
#1 |
New Member
Tianxiao Xie
Join Date: Nov 2018
Posts: 1
Rep Power: 0 |
Hallo every one,
i am having a problem at CFD-Simulation, hope i can get some useful infos from you. I am now simulating a very normal flow in a duct, whoes inlet is fed by a Mixture (o2, n2, ar, co2 and h2o) with given concentrations. The special point in my simulation is that i have an Oxygenreduce through the duct (part of o2 will go through the duct wall), for which i use a negativ o2-Source to consider its effects. As i checked my results, i found that the temperature of the Mixture at the outlet is much higher than the inlet. I dont know how to explain this stange temperature increasing, because i dont have any heat source or thermal boundary conditions on the wall (such as T or q-boundary) by the way, i have a pressure at inlet about 4.6 bar and temperature of 700 °C, the velocity is very small, about 0.5 m/s. For this problem i am using the incompressible ideal gas model. viele Gruesse tx |
|
August 25, 2020, 12:53 |
|
#2 |
Senior Member
-
Join Date: Jul 2012
Location: Germany
Posts: 184
Rep Power: 13 |
Some more information might help to answer your question. Note you can use Latex:
Ideal gas law (thermal): Perhaps a loss of oxygen results in a decrease of . Regards |
|
Tags |
no reaction, species transport, temperature increasing |
|
|