|
[Sponsors] |
November 4, 2003, 13:45 |
Argon properties
|
#1 |
Guest
Posts: n/a
|
I am trying to reproduce shock tube experiments done with argon at pressure drop up to 40 MPa. For this I need good data for physical properties of argon at high pressure and temperature range including equation of state, gas-liquid transition conditions, latent heat of evaporation as a function of pressure and temperature. Could you suggest me good references. I am also interested in viscosity of argon as I'll have to calculate gas-particle interaction later.
Best regards, Oleg |
|
November 4, 2003, 13:50 |
Re: Argon properties
|
#2 |
Guest
Posts: n/a
|
In addition maybe there are some papers with similar simulations?
|
|
November 4, 2003, 14:45 |
Re: Argon properties
|
#3 |
Guest
Posts: n/a
|
||
November 4, 2003, 14:58 |
Re: Argon properties
|
#4 |
Guest
Posts: n/a
|
Thank you for the good reference! Oleg
|
|
November 5, 2003, 02:44 |
Re: Argon properties
|
#5 |
Guest
Posts: n/a
|
I recently did a simulation of a shock wave passing over a cone in argon gas for a benchmark study, however the mach number was not very high (M=2.38). For this simulation I used Sutherland's law for viscosity which is ok for temperatures below say 1000 degrees. For very high temperatures you will need to take into account thermochemical effects such as dissociation.
|
|
November 5, 2003, 04:17 |
Re: Argon properties
|
#6 |
Guest
Posts: n/a
|
Michael, Did you look at the other end, when you have strong rarefaction in Argon and temperature can drop down to say 100 K and condensation starts? I think in my shock tube calculations this is the case.
I wonder if there is en equation of state that I can use to cover both states of argon? Oleg |
|
November 6, 2003, 19:39 |
Re: Argon properties
|
#7 |
Guest
Posts: n/a
|
Hi Oleg,
For the problem I was simulating the temperatures did not get that low. What experiment are you trying to simulate? What is the setup of this experiment? |
|
November 7, 2003, 04:41 |
Re: Argon properties
|
#8 |
Guest
Posts: n/a
|
I have a classical shock tube setup. High pressure chamber is filled with argon at up to 40 MPa. I get low temperatures in my calculations when the rarefaction wave reflects from the bottom of the tube (located vertically). For some time I have temperatures less then 100 K with high enough pressures to overcome gas-liquid transition. The big question of course the nucleation time of the droplets. If it's long enough the fraction of liquid will be small.
I don't have pressure signal measured at the bottom that reflects any strange behaviour but I want be sure that liquid transition is not important in my case as I plan to do calculations of gas-particle dispersion behaviour with the same setup. Hope it helps, Oleg |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Constant velocity of the material | Sas | CFX | 15 | July 13, 2010 08:56 |
Gas Properties for Argon and Hydrogen at high Temp | Ralf Schmidt | FLUENT | 2 | October 11, 2007 04:21 |
Gas Properties for Argon and Hydrogen at high Temp | Ralf Schmidt | Main CFD Forum | 0 | October 2, 2007 14:26 |
Gas Properties for Argon and H2 | Ralf Schmidt | Main CFD Forum | 2 | July 30, 2007 09:15 |
Thermodynamical properties of argon and nitrogen | Rasmus Gjesing (Gjesing) | OpenFOAM Running, Solving & CFD | 1 | June 29, 2004 02:49 |