3.4.2. Viscous Damping on the Left and on the Right

The theoretical approach of Γ*lr* can be found in [33] and takes the following form:

$$
\Gamma\_{lr}(\omega) = \frac{2\sqrt{2}h}{\pi b\sqrt{R\_\varepsilon}}(1+i) \tag{16}
$$

As explained in [35], this expression neglects edge and thickness effects, but remains a sufficient approximation in our configuration since it has been tested and compared to experimental results in [33].
