From: Allen MInton <minoton@protein.osaka-u.ac.jp>
  To  : clauwaer@uia.ua.ac.be
  Date: Thu, 03 Jul 1997 08:50:07 +0900

Re: hollow cylinders

In message <Pine.OSF.3.96.970702104615.26774A-100000@hgins.uia.ac.be>
   "Re: hollow cylinders"
   ""Julius.Clauwaert" <clauwaer@uia.ua.ac.be>" wrote:

clauwaer> Dear RASMB members.
clauwaer> I am looking for expressions of the second virial coefficient B and the 
friction coefficent Ks
clauwaer> of hollow cylinders. I think I have seen them in the past but I do not find 
then back.
clauwaer> Can some-one help me ?
clauwaer> Many thanks. J.Clauwaert

Hi Julius --

1. You can use the Simha equation for prolate ellipsoids of rotation with a large axial 
ratio to estimate the frictional coefficient of a cylinder of known axial ratio.  The 
hollow part doesn't matter.  

2. The second virial coefficient for a fluid of uniform cylinders of known axial ratio 
can be computed using the Kihara equation.  Likewise, the hollow part doesn't matter.  

If you aren't familiar with these equations and need references, let me know.  You can 
email me at minton@helix.nih.gov or minton@protein.osaka-u.ac.jp.

Allen Minton