University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > The “core truths” of high-Reynolds-number turbulence

The “core truths” of high-Reynolds-number turbulence

Add to your list(s) Download to your calendar using vCal

  • UserKatepalli Sreenivasan (Courant Institute of Mathematical Sciences, New York University)
  • ClockWednesday 05 January 2022, 15:30-16:30
  • HouseSeminar Room 1, Newton Institute.

If you have a question about this talk, please contact nobody.

TURW01 - Turbulence: where do we stand and where are we heading?

The history of turbulence is replete with “truths” determined for a range of parameters which, upon extending the range, are found to need modifications—- perhaps not entirely but in some essential ways. As an illustration, a number of scaling relations in turbulence display slow changes with the Reynolds number, and it has been common knowledge that such variations depend loosely on the logarithm of the Reynolds number. Measurements and simulations, whose importance cannot be overstated, often offer less than sterling guidance because they are hard to make and suffer from numerous difficulties that are absent at low Reynolds numbers. This brings into focus the importance of asymptotic “theories”, often in the form of potential scenarios. This talk considers this perspective for a few specific cases from separate domains of turbulence research. It will consider fluctuations in turbulent wall flows (after a brief comment on mean quantities), the veracity of dissipative anomaly in homogeneous and isotropic turbulence, and the scaling of heat transport in thermal convection. 

This talk is part of the Isaac Newton Institute Seminar Series series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2022 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity