12 Μαΐου: Εορτάζοντας τις Γυναίκες στα Μαθηματικά στις 20 Μαΐου 2024 !!!

Πρόγραμμα:

19:00-19:15 Καλωσόρισμα

19:15-19:30 Προβολή ταινίας

Τίτλος: Alicia Boole in the land of polytopes

19:30-20:15 Ομιλία

Ομιλήτρια: Αναπλ. Καθ. Αλεξάνδρα Τζέλλα (University of Birmingham)

Τίτλος: Advection, diffusion and geometry: a new description of scalar dispersion

Περίληψη: The dispersion of a diffusive scalar released in a fluid flowing through network geometries has numerous applications across science and engineering: from vascular and respiratory flows, to porous media, water distribution, and urban pollution. Homogenisation theory provides a coarse-grained description of the scalar at large times and predicts that it diffuses with a certain effective diffusivity, so the concentration is approximately Gaussian. This description fails to capture the tails of the scalar concentration, however.

This talk addresses this issue and shows how the theory of large deviations can be applied to capture the concentration tails. Through a network model, we discuss the distinct role that geometry and topology plays in the non-Gaussian concentration. We also discuss the implications of the results for front propagation in reacting flows.

20:15-20:30 Προβολή ταινίας

Τίτλος: Kovalevskaya's Spinning Top

20:30-21:30 Συζήτηση/Social Hour

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