An analytic study of intermittency and multifractality through Riemann's non differentiable function
- Series
- CDSNS Colloquium
- Time
- Friday, March 4, 2022 - 13:00 for 1 hour (actually 50 minutes)
- Location
- Skiles 05
- Speaker
- Victor Vilaça Da Rocha – Georgia Tech – vrocha3@gatech.edu
Different ways have been introduced to define intermittency in the theory of turbulence, like for example the non-gaussianity, the lack of self-similarity or the deviation of the theory of turbulence by Kolmogorov from 1941.
The usual tool to measure intermittency is the flatness, a measure of the variation of the velocity at small scale, using structure functions in the spatial domain, or high-pass filters in the frequency domain. However, these two approaches give different results in some experiences.