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SUMMARY:Interfacial waves under horizontal electric fields: Hamiltonian st
 ructure and bifurcation of solitary waves - Zhan Wang (Chinese Academy of 
 Sciences)
DTSTART:20221207T110000Z
DTEND:20221207T113000Z
UID:TALK183788@talks.cam.ac.uk
DESCRIPTION:Electrohydrodynamics\, an interdisciplinary subject coupling e
 lectrostatic fields into fluid flows through the Maxwell stress tensor\, h
 as a wide range of applications in chemistry and industry\, including the 
 cooling system\, coating process\, and microfluidic device. The tangential
  electric field\, parallel to the undisturbed interface\, has a stabilizin
 g effect since it provides a dispersive/dissipative contribution to the li
 near system. It can delay the formation of the film rupture and even suppr
 ess the Rayleigh-Taylor instability. This talk focuses on interfacial wave
 s between two dielectrics under tangential electric fields in the inviscid
  limit\, which can be formulated as a Hamiltonian system. Asymptotic model
 ling based on the Hamiltonian framework\, as well as the direct numerical 
 simulations of the primitive equations\, are combined to capture the nonli
 near features of the system. The tangential electric field leads to a more
  complicated dispersion relation\, and its stabilizing nature expands the 
 range of parameters that can be explored\; hence peculiar wave phenomena\,
  particularly new types of solitary waves\, are discovered.
LOCATION:Seminar Room 1\, Newton Institute
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