Reyn

 ( Fluid Dynamics ) 

In fluid dynamics, the reyn is a British unit of dynamic viscosity, named in honour of Osbourne Reynolds, for whom the Reynolds number is also named.Juvinal, Robert C. & Marshek, Kurt M.; Fundamentals of machine component design. 2nd ed., 1991, pp. 480,

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Conversions By definition,

1 reyn = 1 lb_f s in⁻².

It follows that the relation between the reyn and the poise is approximately

1 reyn = 6.89476 × 10⁴ P.

In SI units, viscosity is expressed in newton-seconds per square meter, or equivalently in pascal-seconds. The conversion factor between the two is approximately

1 reyn = 6890 Pa s.

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External links

• Reyn History of the unit