Nordita Astrophysics Seminars

Anomalous transport in rotating Couette flows

by Geert Brethouwer (KTH)

Europe/Stockholm
112:028 ()

112:028

Description
I study heat and momentum transfer in plane Couette flow and Taylor-Couette flow subject to system rotation by simulations. If the flow does not rotate heat and momentum transfer are approximately equally fast, in accordance with the Reynolds analogy. However, at high rotation rates close to the linear stability limit heat transfer is much faster than momentum transfer, clearly in violation of the Reynolds analogy. I observe this difference in steady flows at low Reynolds numbers as well as in turbulent flows at higher Reynolds numbers.