Скачать или смотреть TURW03 | Prof. Joerg Schumacher | Order at the mesoscale

TURW03 | Prof. Joerg Schumacher | Order at the mesoscale: Turbulent convection in horizontally extended domains

Speaker: Professor Joerg Schumacher (Technische Universität Ilmenau)

Date: 7th Mar 2022 - 11:15 to 12:15

Venue: INI Seminar Room 1

Title: Order at the mesoscale: Turbulent convection in horizontally extended domains

Event: (TURW03) Modelling and analysis of turbulent transport, mixing and scaling

Abstract: Many natural flows at high Reynolds or Rayleigh numbers appear in the form of regular patterns at an intermediate range of scales, the mesoscale range. Prominent examples comprise granulation or supergranulation at the surface of the Sun and cloud streets in the atmosphere. In my talk I will present our recent investigation results on the origin of these mesoscale patterns, their dependence on boundary conditions and additional physical processes, such as rotation. I will also discuss the mixing and transport properties in these flows. Our studies are based on 3d high-resolution direct numerical simulations of extended Rayleigh-Bénard convection layers, a paradigm of many natural convection flows. Our simulation studies have been taken recently to very low Prandtl numbers of 0.001 which cannot be obtained in controlled laboratory experiments anymore. The data show here that the fluid turbulence in the bulk of the convection layer is very close to classical Kolmogorov turbulence.

-------------------

FOLLOW US
🌐| Website: https://www.newton.ac.uk
🎥| Main Channel:    / @isaacnewtoninstitute  
🐦| Twitter:   / newtoninstitute  
💬| Facebook:   / newton.institute  
📷| Instagram:   / isaacnewtoninstitute  
🔗| LinkedIn:   / isaac-newton-institute-for-mathematical-sc...  

SEMINAR ROOMS
🥇| INI Seminar Room 1:    / @iniseminarroom1  
🥈| INI Seminar Room 2:    / @iniseminarroom2  
🛰️| INI Satellite Events:    / @inisatellite  

ABOUT
The Isaac Newton Institute is a national and international visitor research institute. It runs research programmes on selected themes in mathematics and the mathematical sciences with applications over a wide range of science and technology. It attracts leading mathematical scientists from the UK and overseas to interact in research over an extended period.

👉 Learn more about us and our events here: https://www.newton.ac.uk