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Cotygodniowe seminarium badawcze
2021-03-25, godz. 12:30, Zoom (szczegóły poniżej)
Grzegorz Łukaszewicz (MIM UW)
Vertical heat transport at infinite Prandtl number for micropolar fluid.
Collaborators: M. Caggio (Univ. of L'Aquila), P. Kalita (UJ), K. Mizerski (IGF PAN) We investigate the upper bound on the vertical heat transport in the fully 3D Rayleigh-Benard convection problem at infinite Prandtl number for a micropolar fluid. Our results are as follows: (1) We obtain a bo...
2021-03-18, godz. 12:30, Zoom (link poniżej streszczenia)
prof. Christopher Jones (Department of Applied Mathematics, University of Leeds, UK)
Giant planet interiors in the light of the Juno and Cassini missions
The Juno mission to the planet Jupiter has revealed significant new information about the processes going on inside the planet. Similar data for Saturn was obtained from the Cassini grand finale. Accurate measurements of Jupiter’s gravity fields has shown that the odd spherical harmonic compon...
2021-03-11, godz. 12:30, Spotkanie na Zoom
Piotr Skrzypacz (Nazarbayev University, Kazachstan)
O zaawansowanych metodach elementów skończonych dla zastosowań w inżynierii reaktorów chemicznych
Join Zoom Meeting https://us02web.zoom.us/j/81583752461?pwd=c2xXN0hoQVBVc2JLNmNYRHkxTzV4UT09 Meeting ID: 815 8375 2461 Passcode: 495149 ...
2021-03-04, godz. 12:30, Spotkanie na Zoom
Lucjan Sapa (AGH w Krakowie, WMS)
Parabolic-elliptic and parabolic systems in diffusion models
The presentation deals with nonlinear parabolic--elliptic and parabolic systems with initial-boundary conditions modeling biological ion channels and interdiffusion in solids. I will formulate theorems on local and global existence, uniqueness and properties of weak solutions, in suitable Sobolev sp...
2021-01-28, godz. 12:30, Zoom - szczegóły pod abstraktem
Maja Szlenk (doktorantka SDNŚiP)
Existence of weak solutions to compressible Stokes system with general pressure
In the presentation I will talk about the existence and uniqueness of weak solutions to the compressible Stokes system. Using the Lagrangian formulation, we are able to prove that the solution is globally bounded, provided that the initial data are bounded. Moreover, our approach works for large cla...
2021-01-21, godz. 12:30, Zoom (szczegóły pod abstraktem)
Tomasz Lewiński (Politechnika Warszawska, WIL)
Metoda FMD (projektowanie materiałów z wolnego wyboru).
The presentation deals with minimization of the weighted average of compliances of structures, made of an elastic material of spatially varying elasticity moduli, subjected to n load variants acting non-simultaneously. The trace of the Hooke tensor is assumed as the unit cost of the de...
2021-01-14, godz. 12:30, Zoom - szczegóły poniżej
Wojciech Dębski (IGF PAN)
Time Reversal - an efficient way of data analysis
Building knowledge on surrounding world requires information about it. This almost trivial statement gains a much deeper sense in cases when we cannot infer thought information by direct measurements. It happens quite often, actually too often. In such a case we can still gain (at least ...
2021-01-07, godz. 12:30, Zoom (szczegóły poniżej)
Łukasz Chomienia (doktorant SDNŚiP)
Applications of PDEs in functional spaces with a measure or a weight
In my presentation I want to discuss two problems to which applying methods of PDEs in functional spaces that depend on a certain kind of measure seems to be fruitful. Describing a process of transfer of heat in a conductor that is made of parts of different dimensions is quite problematic if we r...
2020-12-17, godz. 12:30, Zoom meeting
Krzysztof Mizerski (Instytut Geofizyki PAN)
Applications of mathematics in astrophysical hydrodynamics
The aim of the seminar is to present approaches and problems that arise in the analysis of dynamics of planetary and stellar fluid interiors. This involves the convective heat transfer in the presence of density stratification and the hydromagnetic dynamo effect. Moreover, development of magnetohydr...
2020-12-03, godz. 12:30, Zoom meeting
Piotr B. Mucha (MIM UW)
Pandemia COVID19 oczyma ignoranta
Chciałbym zrobić heurystyczne wprowadzenie do modelowania pandemii COVID19, która nas dotknęła w tym roku. Głównym elementem będą modele typu SEIR, opisujące uśrednioną populację. Wydawałoby się, że predykcje dynamiki takiej pandemii są bardzo ważne, ale ......
