Creeping current
Creeping currents (also called Stokes currents ) are characterized by the fact that the frictional forces in them are much greater than the inertial forces . So there are small Reynolds numbers . Examples are highly viscous fluids in a plain bearing or in extruders .
The Navier-Stokes equations can be simplified for creeping currents . In the usual case for incompressible Newtonian fluids this leads to a linear system of form
where the velocity field , the (static) pressure , the force vector , the dynamic viscosity and / or the Laplace or Nabla operator denote.
See also
Individual evidence
- ↑ George K. Batchelor: Introduction to Fluid Mechanics . Cambridge University Press, Cambridge 2012, doi : 10.1017 / CBO9780511800955 .