[Mol.Phys.26(1973)1475]
An external force
is introduced in the
equations of motion according to
|
(8.15) |
(Note:
and
which fulfills 8.12.)
This will eventually lead to an average velocity profile which
theoretically should look like
|
(8.16) |
where .
Fitting the actual velocity profile to this expression we find
and from that the -dependent viscosity:
|
(8.17) |
Repeating the calculation for several values of and extrapolating
to
we find an estimate for
Note:
The applied force does work against the viscous forces, thus inducing
an undesirable temperature rise.
F. J. Vesely / University of Vienna