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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:Mixed order and multirate variational integrators 
 for the simulation of dynamics on different time s
 cales - Sigrid  Leyendecker (Friedrich-Alexander-U
 niversität Erlangen-Nürnberg)
DTSTART;TZID=Europe/London:20190904T150000
DTEND;TZID=Europe/London:20190904T160000
UID:TALK129430AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/129430
DESCRIPTION:Mechanical systems with dynamics on varying time s
 cales\, e.g. including highly oscillatory motion\,
  impose challenging questions for numerical integr
 ation schemes. High resolution is required to guar
 antee a stable integration of the fast frequencies
 . However\, for the simulation of the slow dynamic
 s\, integration with a lower resolution is accurat
 e enough - and computationally cheaper\, especiall
 y for costly function evaluations. Two approaches 
 are presented\, a mixed order Galerkin variational
  integrator and a multirate variational integrator
 \, and analysed with respect to the preservation o
 f invariants\, computational costs\, accuracy and 
 linear stability.  <br><br><br><br><br>
LOCATION:Seminar Room 2\, Newton Institute
CONTACT:INI IT
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