|
[Sponsors] |
![]() |
![]() |
#1 |
New Member
Join Date: Nov 2017
Posts: 7
Rep Power: 8 ![]() |
Hello,
I am looking to simulate a real gas using a Cp(T) polynomial instead of the constant value of 1004.703 J/kg*K for air. I noticed a line for CP_POLYCOEFFS in the template SU2 file, but I couldn't find any information on how to enable it. Can this be used with the STANDARD_AIR fluid model, or do I need to select a different model? Thanks, |
|
![]() |
![]() |
![]() |
![]() |
#2 |
Senior Member
bigfoot
Join Date: Dec 2011
Location: Netherlands
Posts: 596
Rep Power: 17 ![]() |
It can be used when you set the fluid to incompressible polytropic gas.
From config_template.cfg: Code:
% ---- IDEAL GAS, POLYTROPIC, VAN DER WAALS AND PENG ROBINSON CONSTANTS -------% % FLUID_MODEL= INC_IDEAL_GAS_POLY SPECIFIC_HEAT_CP= 1004.703 MOLECULAR_WEIGHT= 28.96 CP_POLYCOEFFS= ( 1004.703, 0.1, 0.0, 0.0, 0.0) |
|
![]() |
![]() |
![]() |
![]() |
#3 |
New Member
Join Date: Nov 2017
Posts: 7
Rep Power: 8 ![]() |
Thank you!
I am looking to simulate compressible flow at high Mach numbers, around Mach 5. Could you recommend a more suitable fluid model for this scenario? I plan to account for variations in the heat capacity ratio caused by the high pressures and temperatures. |
|
![]() |
![]() |
![]() |
![]() |
#4 |
Senior Member
bigfoot
Join Date: Dec 2011
Location: Netherlands
Posts: 596
Rep Power: 17 ![]() |
Hi, sorry for the long wait, so you could maybe also use the NEMO solver, which targets hypersonic flows. There are some examples in the testcases repository.
|
|
![]() |
![]() |
![]() |
![]() |
#5 |
New Member
Join Date: Nov 2017
Posts: 7
Rep Power: 8 ![]() |
I'll check it, thank you
|
|
![]() |
![]() |
![]() |
Tags |
cp polynomial, real-gas, specific heat |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Fluent UDF - polynomial profile description | mihnea333 | FLUENT | 0 | February 26, 2021 03:19 |
Error: GENERAL CAR CDR - User-Defined-Material-Database | EvaKn | FLUENT | 0 | December 21, 2020 08:01 |
Add piecewise polinomial material property | EvaKn | FLUENT | 0 | December 21, 2020 06:03 |
thermophysicalProperties with polynomial values | Gerrit | OpenFOAM Running, Solving & CFD | 4 | April 21, 2020 10:51 |
polynomial BC from 3d vector data | map | OpenFOAM Programming & Development | 0 | March 30, 2015 08:48 |