
[Sponsors] 
August 14, 2007, 04:46 
Hi,
Does anybody know where

#1 
Member
Lasse Boehling
Join Date: Mar 2009
Posts: 35
Rep Power: 10 
Hi,
Does anybody know where to look up sutherlandTransport coefficients (A_s and T_s)? I need them for hydrogen (H2), but it would be nice to know where there's a table to look at? Greetings, Lasse 

August 15, 2007, 04:53 
Hi,
Just to agree with the

#2 
New Member
isabelle choquet
Join Date: Mar 2009
Location: trollhÃ¤ttan, vÃ¤stra gÃ¶taland, sweden
Posts: 3
Rep Power: 10 
Hi,
Just to agree with the notations: Sutherland's law with two or three coefficients can write: mu = C1 T^(3/2) / (T+C2) and mu = mu_0 ( T / T_0)^(3/2) (T_0+S) / (T+S) where, mu is the viscosity (in kg/ms) T is the temperature (in K) C1 and C2 are the coefficients mu_0 is a reference value (in kg/ms) T_0 is a reference temperature (in K) S is an effective temperature calso called Sutherland constant (in K) For hydrogen (H2) C1 = 8.411 e6 C2 = 273.11 mu_0 = 8.411 e6 kg/(m.s) T_0= 273.11 K S = 96.67 K Values for the coefficients can be found in: Saxena, S.C., 'Viscosity of Multicomponent Mixtures of Gases,' Proceed ings of the Sixth Svmposirun on Thermophvsical Properties, Liley, P.E, ed., American Society of Mechanical Engineers, 1973, pp. 100110. Touloukian, Y.S., Liley P.E and Saxena, S.C., 'Thermal Conductivitv. Nonmetallic Liauids and Gases,' Thermophysical Properties of Matter, The TPBC Data Series, Vol. 3, IFI/Plenum Data Corporation, New Pork, 1970a. More recent references probably exist too. Regards, isabelle 

August 15, 2007, 06:47 
Thank you

#3 
Member
Lasse Boehling
Join Date: Mar 2009
Posts: 35
Rep Power: 10 
Thank you


July 5, 2011, 09:55 

#4 
Member
Tibo
Join Date: Jun 2011
Posts: 68
Rep Power: 8 
There is obviously a mistake in isabelle´s answer. Just by looking at the two equations she gave (which are, by the way, correct), one can easily see that the 2parameter equation is nothing but a simplification of the 3parameter equation, where C1 contains all constants and C2 equals S.
However, C1 and C2 are usually given nondimensional values. So, C2 = S / (1K) = 96.67 and C1 = mu_0 (T_0)^(3/2) (T_0+S) / (1 kg/m.s.K^(1/2)), i.e. C1 = 6.89e7 using isabelle´s values. This agrees pretty well with the values one can find in "Zahlenwerte & Funktionen" of Landolt and Börnstein, IV. Band  1.Teil (1925?): C1 = 6.71e7 (when nondimensionalized from SI units) and C2 = 83. The values of mu_0, T_0 and S isabelle gave are correct though. She simply did not copy/compute the right values for C1 and C2. Last edited by megacrout; July 5, 2011 at 10:08. Reason: small mistake in given units 

September 30, 2011, 11:19 

#5 
Member
R. P.
Join Date: Jul 2010
Posts: 72
Rep Power: 8 
Hello All
Somebody have this references that Isabelle posted here ? (pdf. version) Saxena, S.C., 'Viscosity of Multicomponent Mixtures of Gases,' Proceed ings of the Sixth Svmposirun on Thermophvsical Properties, Liley, P.E, ed., American Society of Mechanical Engineers, 1973, pp. 100110. Touloukian, Y.S., Liley P.E and Saxena, S.C., 'Thermal Conductivitv. Nonmetallic Liauids and Gases,' Thermophysical Properties of Matter, The TPBC Data Series, Vol. 3, IFI/Plenum Data Corporation, New Pork, 1970a. Could you send me by email ? Many thanks ! 

March 25, 2013, 14:02 

#6 
New Member
Efstratios Mavrogiannis
Join Date: Dec 2012
Posts: 20
Rep Power: 6 
Dear Rophys,
Did you manage to find these references, because I can't. Thank You Stratos 

April 17, 2017, 04:21 

#7  
New Member
Sun Jinguo
Join Date: Jan 2017
Posts: 1
Rep Power: 0 
Quote:


Thread Tools  
Display Modes  


Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Sutherland formula  Prabhu  CFX  1  December 8, 2008 04:51 
How to compute transport coefficients in faces ??  Asghari  Main CFD Forum  0  May 13, 2007 10:15 
Sutherland constants for H2, CH4, CO, CO2, H2O, O2  Ravindra Babu Yarasu  Main CFD Forum  1  September 24, 2006 05:59 
Sutherland law for Viscosity  Riaan  FLUENT  0  October 11, 2005 20:33 
Coefficients  Henrique Argentieri  Phoenics  0  August 5, 2003 09:53 