|
[Sponsors] |
October 15, 2007, 11:40 |
CP - KINETIC THEORY
|
#1 |
Guest
Posts: n/a
|
There is a problem i am struggling with. It occurs only, when in the material's setup I turn cp to kinetic energy. As long as kinetic energy is constant. Everything is fine.
I work on simulating a free-flow at M=0.8, p_stat=26436.2426 Pa, and T=223.15K. I calculated the total pressure to be p_tot=40297.8223 Pa and the total temperature to be T_tot=251.7132. I set the Operating Pressure to "0", input the p_tot for the Pressure Inlet at "Total Gauge Pressure", p_stat at Initial Gauge Pressure and T_tot at Total Temperature. So far so good. When I want to initialize the calculation and set "compute from" to my Pressure Inlet, Fluent puts out a Gauge Pressure of 26436.18 Pa (not too far off), a velocity of 222.9477 m/s (at T=223.15 and 0.8M it should have been 239.704) and a temperature of 165.1291 (now, where did this come from). Via try and fail I found out that when I input a Total temperature of 323.2376 K and a Total Gauge Pressure of 38293.5 Pa I get the desired Initial Values. These Inputs don't mirror the real conditions though, so I wonder what I could be missing here. Regards, Leo |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
udf for cohesive forces in kinetic theory | T.Hari | FLUENT | 1 | October 6, 2014 15:41 |
Mixture model and kinetic theory | Fuping Qian | FLUENT | 3 | January 24, 2011 07:58 |
Kinetic Theory in Multiphase | mtl | Main CFD Forum | 0 | June 3, 2009 23:54 |
Kinetic Theory | Tommaso | FLUENT | 2 | July 2, 2003 06:21 |
solid kinetic theory | wan xiaotao | Main CFD Forum | 6 | August 10, 1999 19:43 |