The effect of the SEMs finite depth of field was modeled by varying the convergence angle
of the incident electron beam.
17), reported that entrance pressure drop tends to be independent of convergence angle
at high flow rates while at lower flow rates the pressure drop decreases with convergence angle
w] curvature radius of the tensioned-web T web tension t wet film thickness V coating speed Greek Letters [alpha] divergence angle of the downstream die lip [beta] convergence angle
of the downstream die lip [GAMMA] normal stress in the tensioned-web [gamma] divergence angle of the upstream die lip [delta] divergence angle of the upstream die lip for Die A and Die B [kappa] curvature of the tensioned-web [mu] viscosity [theta] wrapping angle [sigma] surface tension [tau] web thickness [phi] static contact angle of the downstream meniscus
High-beam current yields faster, more precise analytical results, while smaller convergence angles
improve the spatial resolution of the analysis.