Electro (&magneto) hydro-dynamics 사례

  • FLOW-3D models
  • Electrophoresis
  • Dielecrophoresis
  • Conductive fluid model
  • Electro-wetting
  • Electro-osmosis
  • Joules heating

Electrophoresis

  • Electric charge / electrophoresis
  • Particle sorting

Electro-wetting

  • Integrates effects of electrophoresis and dielectrophoresis
  • Induced charges manipulate fluid at micro/nano volumes
  • Electrowetting on dielectric (EWOD).

Dielectrophoresis (DEP)

DEP는 particle/fluid의 dielectric 특성이 주변 매체의 dielectric 특성과 다를 때만 발생한다.

Inputs required:

  • Dielectric constant of the fluid and or particles
  • Dielectric constant of any components, that may influence the electric field
  • Define electric potential on the components or on the mesh boundaries
  • Permittivity of vacuum.

섬세한 경계를 가진 두 개의 유체, 표면 장력, electric potential, fluid electric charge, dielectrophoresis, newtonian viscosity

Electro osmosis

Micro-pump example

  • Zeta potential
  • Electric field defined by the electric potential on the components or on the mesh boundaries.
  • Permittivity of vacuum
  • Flow rate control through device

Inputs required:

  • Zeta potential
  • Electric field defined by the electric potential on the components or on the mesh boundaries.
  • Permittivity of vacuum
  • Flow rate control through device

Electro-thermal effects (Joules heating)

  • 전류가 물질을 통해 흐를 때 그 저항성은 물질을 가열하게 하며, 이 효과를 joule heating이라고 한다.
  • 온도 구배 설정 속도 필드 및 장치의 유체 순환

Magneto Hydrodynamics

  • 자력에 의해 입자가 유선으로부터 이탈한다.

Xiaozheng Xue1, Ioannis H. Karampelas1, Chenxu Liu2 and Edward P. Furlani1,2
1 Department of Chemical and Biological Engineering
2 Department of Electrical Engineering
SUNY at Buffalo
FLOW-3D Americas User Conference , Toronto, 2014

Magneto Hydrodynamics

  • 자기 제어로 유체 혼합 사용

Use of magnetic field to align beads

John Wendelbo MEng, MSc.
Senior CFD Engineer, Flow Science
john.wendelbo@flow3d.com