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shear stress
(redirected from Wall shear stress)

   Also found in: Encyclopedia, Wikipedia 0.01 sec.
shear stress
n.
See shear.

shear stress
n
(Engineering / General Engineering) the form of stress in a body, part, etc., that tends to produce cutting rather than stretching or bending

shear stress
A form of stress that subjects an object to which force is applied to skew, tending to cause shear strain. For example, shear stress on a block of wood would arise by fixing one end and applying force to this other; this would tend to change the block's shape from a rectangle to a parallelogram. See also strain.


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However, it is known that highly viscous fluids (specifically polymer melts) slip at solid boundaries when the wall shear stress exceeds a critical value (8-10).
In contrast to the fully developed region of turbulent jets, which shows the features independent of initial conditions such as inlet Reynolds number, the jet transition process involves more interaction between the wall shear stress and the free shear stress from the laminar-like flow to the turbulent flow, especially, affected by the jet slot Reynolds number (Bajura and Catalano 1975; Mele et al.
Chapters cover the objectives of experimental study, fundamentals of fluid mechanics, wind tunnels, flow visualization, hot-wire anemometry, analogue methods, pressure- measurement techniques, velocity measurements, temperature measurements, measurement of wall shear stress, mass and volume flow measurements, special flows, data acquisition and processing, and uncertainty analysis.
 
 
 
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