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As we have been studding in the course lectures, if the fluid has very high viscosity, the velocity
is low and has a predominant direction, velocity gradients are also low and the geometry of the case
is well delimited, the convective term in the Navier-Stokes equations can usually be neglected in
front of the viscous term. Then, a very low Reynolds number characterizes these flows, and they
are typically laminar. The dynamic equations (Navier-Stokes without the inertial terms) are known as
Stokes equations, and these flows as Stokes flows.

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