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UID:a3400b5e-422a-4b1e-b609-881229ddbe66@nexttoyou
DTSTAMP:20261107T014016Z
DTSTART:20261117T210000Z
DTEND:20261117T220000Z
SUMMARY:Prof. Joe Alexandersen (University of Southern Denmark) - Topology
  Optimisation of Fluid Flow and Heat Transfer: Walls\, Scales and Time
LOCATION:Building 3 Room 3-370\, 33 MASSACHUSETTS AVE\, Cambridge\, MA 021
 39
DESCRIPTION:Please join us on Tuesday\, November 17\, 2026 for the Pierce 
 Seminar at 4 PM in Room 3-370 with Prof. Joe Alexandersen from the Univer
 sity of Southern Denmark.\n\nAbstract Title: Topology Optimisation of Flu
 id Flow and Heat Transfer: Walls\, Scales and Time\n\nAbstract:\n\nTopolo
 gy optimisation\, originally developed to find stiff and lightweight stru
 ctures\, lets a computer automatically determine where material should\, 
 and should not\, be placed. Extending it to fluid flow and heat transfer 
 leads to unintuitive designs for flow and cooling systems\, but raises fu
 ndamental numerical challenges. This talk discusses three of them\, with 
 applications in the cooling of electronics and fusion energy devices. Fir
 st\, walls: density-based methods have no explicit surfaces\, so physical
  boundary conditions cannot be imposed on them directly. By extracting wa
 ll location and orientation from the design field itself\, we impose free
 -slip conditions and turbulent wall functions implicitly\, showing that t
 he boundary physics can change optimal designs dramatically and that accu
 rate turbulent optimisation is possible on coarse meshes. Second\, scales
 : multiscale homogenisation and de-homogenisation produce fine microchann
 el networks at a fraction of the computational cost. Third\, time: treati
 ng time as an additional dimension and using parallel space–time multigri
 d solvers makes transient problems with billions of unknowns tractable.\n
 \nBio:\n\nJoe Alexandersen is an Associate Professor at the University of
  So\n\nhttp://next-to-u.app/events/a3400b5e-422a-4b1e-b609-881229ddbe66
URL:http://next-to-u.app/events/a3400b5e-422a-4b1e-b609-881229ddbe66
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