CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Main CFD Forum

Argon properties

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   November 4, 2003, 14:45
Default Argon properties
  #1
Oleg Melnik
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
  Reply With Quote

Old   November 4, 2003, 14:50
Default Re: Argon properties
  #2
Oleg Melnik
Guest
 
Posts: n/a
In addition maybe there are some papers with similar simulations?
  Reply With Quote

Old   November 4, 2003, 15:45
Default Re: Argon properties
  #3
BAK_FLOW
Guest
 
Posts: n/a
Hi,

give the following online source a try.

http://webbook.nist.gov/chemistry/

Regards,

Bak_Flow
  Reply With Quote

Old   November 4, 2003, 15:58
Default Re: Argon properties
  #4
Oleg Melnik
Guest
 
Posts: n/a
Thank you for the good reference! Oleg
  Reply With Quote

Old   November 5, 2003, 03:44
Default Re: Argon properties
  #5
Michael
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.
  Reply With Quote

Old   November 5, 2003, 05:17
Default Re: Argon properties
  #6
Oleg Melnik
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
  Reply With Quote

Old   November 6, 2003, 20:39
Default Re: Argon properties
  #7
Michael
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?
  Reply With Quote

Old   November 7, 2003, 05:41
Default Re: Argon properties
  #8
Oleg Melnik
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
  Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


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


All times are GMT -4. The time now is 06:32.