|
[Sponsors] |
High-range Real Gas Liquid/Gas Mixing Problem |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
April 11, 2018, 19:32 |
High-range Real Gas Liquid/Gas Mixing Problem
|
#1 |
New Member
artfoster
Join Date: Apr 2018
Posts: 1
Rep Power: 0 |
I am trying to get a model to converge that uses oxygen with a wide range of pressures and temperatures without going to a 2-phase model. I am modeling liquid injection into a hot gaseous flow.
I have previously worked with the RGP table feature which works well by approximating the liquid and gas Cp and densities, and has been relatively accurate for the purposes I need, as long as I stay well away from the critical point (have kept pressures high). I realize there is a FORTRAN RGP table generator that does not cluster points around the critical point, and a Python RGP table generator unique to 18.2 that does. Neither of them seem to work once I drop pressures in the model that bring me close to the fluid critical point. Is there any way with a Peng-Robinson or Redlich-Kwong model to try and model this mixing? I have read the ANSYS model and have set the expert parameter realeos liquid prop to 2, but densities in the cold inlet (which I am approximating to be liquid) are still too high. I am making the overall equation of state a gas. |
|
July 22, 2018, 04:46 |
|
#2 |
New Member
Yafei Li
Join Date: Jul 2018
Location: CHIAN
Posts: 16
Rep Power: 8 |
Dear Bicklevov,
How to use the RGP file define the liquid properities? can you give me a format or example file? I will appreciate it! Best regrad! |
|
Tags |
mixing fluids, real gas, tablegeneration |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
UDF for thermal conductivity relation of nano fluid | ngonbadipoor@yahoo.com | Fluent UDF and Scheme Programming | 29 | April 1, 2017 04:02 |
UDF velocity profile | willroca | Fluent UDF and Scheme Programming | 2 | January 10, 2016 04:13 |
[REQUEST HELP] Fluent 15.0 using NIST real gas model | Reivax | FLUENT | 0 | June 16, 2015 12:00 |
error message | cuteapathy | CFX | 14 | March 20, 2012 07:45 |
Sod shock tube problem with real gas effects | ganesh | Main CFD Forum | 0 | October 17, 2006 02:22 |