reyn

{{Other uses|Reyn (disambiguation)}}

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, {{ISBN|0-471-62281-8}}

Conversions

By definition,

:1 reyn = 1 lbf 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.

References