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Föreläsningar och seminarier



Föreläsningar och seminarier



 



Brahe lecture by Björn Engquist on Multiscale Methods






Tid: On 2017-12-13 kl 15.00

Typ: Föreläsningar och seminarier








This lecture will be introductory in approach and requires only some familiarity with basic numerical methods.

In multiscale processes different phenomena interact on different scales in time and space. Computer simulations of such processes are challenging since the smallest scales must be accurately represented over domains that cover the largest scales. This results in a very large number of unknowns and prohibitingly long computing times. We will briefly discuss analytical techniques and then focus on numerical multiscale methods, which have been developed to overcome this difficulty. We will illustrate these technologies by the examples of turbulent flow and the coupling between molecular and continuum models. We will also discuss some connections between multiscale modeling, information theory and data compression.