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SUMMARY:Flows close to patterned\, slippery surfaces - Clarissa Schoenecke
 r (Technische Universität Kaiserslautern\; Max-Planck-Institut für Polym
 erforschung )
DTSTART:20191028T133000Z
DTEND:20191028T140000Z
UID:TALK133189@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Micro- or nanostructured surfaces can provide a significant sl
 ip to a fluid flowing over the surface\, making them attractive for the de
 velopment of functional coatings. This slip is due to a second fluid being
  entrapped in the indentations of the structured surface\, like air for su
 perhydrophobic surfaces or oil for so-called lubricant-infused surfaces (S
 LIPS). This talk addresses the flow phenomena close to such surfaces. The 
 nature of the structured surface leads to a mixed-boundary value problem f
 or the flow field\, which\, for the considered situation\, obeys the bihar
 monic or Laplace equation. Using complex variables techniques\, a solution
  to this problem can be found\, such that simple\, explicit expressions fo
 r the flow field as well as the effective slip length of the surface can b
 e found. They can for example be employed as a guideline to design efficie
 nt surface coatings for drag reduction. This is work together with Steffen
  Hardt (TU Darmstadt).
LOCATION:Seminar Room 1\, Newton Institute
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