An oscillating plate has a boundary layer of size tex2html_wrap108 . The stress on the plate is tex2html_wrap109

How long does it take for a circular flow in a circular bowl to decay? Boundary layer thickness. tex2html_wrap110 where tex2html_wrap111 = spin velocity. The angular momentum is tex2html_wrap112 . The torque is tex2html_wrap113 . So tex2html_wrap114

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