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Cotygodniowe seminarium badawcze
2020-11-19, godz. 12:30, Zoom
Piotr Kalita (UJ)
Układy dynamiczne jako narzędzie do modelowania procesów związanych ze świadomością
Teoria Zintegrowanej Informacji to zaproponowany przez Giulio Tononiego formalizm stosowany do opisu zjawisk związanych ze świadomością. Przedstawię założenia tej teorii oraz omówię oparte o nią modele wykorzystujące układy dynamiczne i ich atraktory. --...
2020-10-29, godz. 12:30, Zoom meeting
Tomasz Piasecki (IMSiM)
A maximal regularity approach to compressible mixtures"
Join Zoom Meeting https://us02web.zoom.us/j/81583752461?pwd=c2xXN0hoQVBVc2JLNmNYRHkxTzV4UT09 Meeting ID: 815 8375 2461 Passcode: 495149 -------------------------------------------------------------------------------------------------------------- ...
2020-10-15, godz. 12:30, Zoom
Gustavo Abade (Instytut Geofizyki FUW UW)
Turbulent clustering of low-inertia droplets
Several effects of turbulence may reduce the time for rain initiation in warm (ice-free) atmospheric clouds. This talk overviews the effect of turbulent clustering of inertial droplets that interact hydrodynamically. Using the so-called drift-diffusion model (based on the Master ...
2020-03-12, godz. 12:30, 5070
Jakub Gałecki (Politechnika Warszawska)
Adjoint-Based Optimal Control of Incompressible Flows with Energy-Stable Boundary Conditions
Problems arising in computational fluid dynamics often require artificially truncating the domain and posing appropriate open boundary conditions. However, these are known to suffer from backflow instability – when the flow at the boundary reverses, the simulation can blow up altoge...
2020-03-05, godz. 12:30, 5070
prof. Wojciech Zajączkowski (IMPAN)
The Ladyzhenskaya-Serrin condition for regular solutions of the Navier-Stokes eguations
2020-01-23, godz. 12:30, 5070
Wojciech Górny (doktorant MIM)
Structure of solutions to the least gradient problem
In the least gradient problem with discontinuous boundary data, the solutions may fail to be unique. However, they often share a similar structure. In this talk, I will discuss the geometrical reasons for this phenomenon, with a particular focus on anisotropic cases. ...
2020-01-16, godz. 12:30, 5070
Piotr Kokocki (UMK Toruń)
Total integrals of solutions for inhomogeneous Painlevé II equation
We establish a formula determining the value of the Cauchy integrals for the real and purely imaginary Ablowitz-Segur solutions for the inhomogeneous second Painlevé equation. Our approach relies on the Deift-Zhou steepest descent analysis of the corresponding Riemann-Hilbert proble...
2019-12-19, godz. 12:30, 5070
dr Maciej Lisicki (Wydzial Fizyki UW)
Pumping and swimming: two faces of phoretic flows
Janus particles with the ability to move phoretically in self-generated chemical concentration gradients are model systems for active matter. On the other hand, chemically active surfaces can lead to microscale flow generation, bacoming an effective pumping mechanism in inertia-less small-scale flow...
2019-12-05, godz. 12:30, 5070
Łukasz Chomienia (doktorant MIM)
Energy conservation for the compressible Euler system
We prove the local energy equality for the isentropic compressible Euler equations under the assumption of the Besov regularity in space and the Bochner integrability in time. We show that this result can be established in a certain class of exponents determining the regularity. We also use t...
2019-11-28, godz. 12:30, 5070
Jakub Siemianowski (UMK Toruń)
Systems of elliptic PDEs on R^N
We consider the system of second-order elliptic equations with the nonlinear term depending on the solution and its first-order derivatives on whole R^N. In order to solve it, firstly, we investigate auxiliary systems on large balls B_n. Then, by suitable estimates and the so-called tail est...
