Shearing stress

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shearing stress

Any of the tangential components of the stress tensor.

In meteorology, the shearing stress is often that on a horizontal surface in the direction of the wind:
ams2001glos-Se22
where μ is the dynamic (molecular) viscosity, u the wind speed, and z the vertical coordinate. A corresponding eddy stress, or Reynolds stress, may be defined, with an eddy viscosity in place of the molecular viscosity.
See also surface friction, Newtonian friction law.

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