Air-Aided Shear on a Thin Film Subjected to a Transverse Magnetic Field of Constant Strength: Stability and Dynamics

Figure 1

Sketch of the flow configuration. When 𝜏_𝑎>0, the air shears the surface along the downhill direction (in the direction of the arrow). However, if 𝜏_𝑎<0, the air shears the surface along the uphill direction (in this case, the arrow would point to the opposite direction). The air shear effect is zero when 𝜏_𝑎=0.