Black and Jenssen Model
The dynamic coefficients for the Black and Jenssen model are given by
where
The factors f0, f1, and f2 in the above expressions are the correction factors multiplied in the short seal expressions to correct for the finite length of the seal. These factors are given by
The friction loss factor, λ, is defined as
Ra and Rc are axial and circumferential Reynolds numbers, respectively, and are given by
The time scale, T, is given by
and