$U$ $\left(\frac{m}{s}\right)$	Velocity of the roll
$H_0$	Nip region
$\frac{H}{H_0}$	Coating thickness
$R$ $\left(m\right)$	Roll radius
$\rho$ $\left(\frac{kg}{m^3}\right)$	Fluid density
$We$	Perturb parameter
$m$	viscosity variation parameters
$\lambda$	Flow rate
$\overline{B}$	The material constant of the Powell–Eyring fluid model
$\overline{C}$	The material constant of the Powell–Eyring fluid model
$\overline{N}$	The material constant of the Powell–Eyring fluid model
$\epsilon$	Dimensionless number which is square root of ratio of $H_0$ to $R{H}_0$