Taylor's hypothesis

From AMS Glossary
Jump to: navigation, search


Taylor's hypothesis

An assumption that advection contributed by turbulent circulations themselves is small and that therefore the advection of a field of turbulence past a fixed point can be taken to be entirely due to the mean flow; also known as the Taylor "frozen turbulence" hypothesis.

It only holds if the relative turbulence intensity is small; that is,
ams2001glos-Tex03
, where U is the mean velocity and u the eddy velocity. Then the substitution t = x/U is a good approximation.

Personal tools
Namespaces
Variants