In fluid dynamics, the Reyn is a British unit of dynamic viscosity. Named in honour of Osbourne Reynolds, for whom Reynolds number is also named [1]

One Reyn is:

1 Reyn = 1 lbf·sec·inches-2

Relation between Reyn and centipoise is approximately:

1 Reyn = 6.89476 × 10 6 centipoise

In SI units, viscosity is expressed as newton-seconds per square meter, or pascal-seconds. The conversion factor between the two is the same for stress:

1 reyn = 6890 Pa × s

References

  1. Juvinal, Robert C. & Marshek, Kurt M.; Fundamentals of machine component design. -2nd ed., 1991, pp. 480, ISBN 0-471-62281-8

External links

  • Reyn History of the unit


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