The Fascinating World of Turbulent Flows by Samriddhi Sankar Ray

Explore the complex and captivating realm of turbulent flows in this Einstein Lecture delivered by Samriddhi Sankar Ray from the International Centre for Theoretical Sciences. Delve into one of classical physics' greatest unresolved problems, examining its ubiquitous presence in natural processes from ocean depths to atmospheric heights. Discover the challenges in understanding turbulence and its impact on small particles like organisms, pollen grains, and raindrops. Learn about viscosity, energy, and boundaries as key ingredients in turbulent flows, and explore mathematical frameworks used to study them. Investigate the non-Gaussian nature of turbulence, intermittency, and dissipative anomaly. Gain insights into the importance of turbulent flows in various applications, including the formation of warm clouds. Engage with thought-provoking questions and lasting images that illustrate the fascinating world of turbulent flows, followed by an interactive Q&A session.

DATE: 24 August 2018,
Introduction
The Fascinating World of Turbulent Flows
Turbulence: On Google News!
Turbulent Flows
Example of Turbulence
Ingredients: Viscosity, Energy and Boundaries
A Mathematical Framework
Fully Developed Turbulence
Understanding Turbulence
Why do we care about turbulent flows?
Summary
What Goes Wrong?
About Distributions: Mostly Gaussian!
Back to Turbulence: Mostly Non-Gaussian
Non-Gaussian Nature of Turbulence
Intermittency
Rationalizing Intermittency
So is this the unsolved problem?
Dissipative Anomaly
Finite-Time Blow-Up
Why do we care about turbulent flows?
Warm Clouds: A Grand Challenge
What makes particles special?
Typical Questions
Lasting Images
Q&A