Kumar, Aloke; Cierpka, Christian; Williams, Stuart J.; Kähler, Christian J.; Wereley, Steven T.
Dokumenttyp:
Konferenzbeitrag / Conference Paper
Titel:
3D3C velocimetry measurements of an electrothermal microvortex using wavefront deformation PTV and a single camera
Konferenztitel:
International Symposium on Applications of Laser Techniques to Fluid Mechanics (15., 2010, Lissabon)
Konferenztitel:
15th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon, Portugal, July 5-8
Tagungsort:
Lissabon
Jahr der Konferenz:
2010
Datum Beginn der Konferenz:
05.07.2010
Datum Ende der Konferenz:
08.07.2010
Jahr:
2010
Sprache:
Englisch
Abstract:
We study the three-dimensional nature of a toroidal electrothermal microvortex (EMV) by using wavefront deformation particle tracking velocimetry (PTV) developed at the Universität der Bundeswehr München. A cylindrical lens is used in conjunction with a microscope objective lens to create systematic wavefront deformations in the particle images. The particles are observed by a single camera and appear as ellipses. The elliptical nature of the particle images encodes out-of-plane information regarding the particle's position. This new technique is ideally suited for measuring transport in the EMV and provides the full threedimensional, time resolved particle trajectories with Lagrangian velocity and acceleration. Numerical simulations compare well with experimental measurements. «
We study the three-dimensional nature of a toroidal electrothermal microvortex (EMV) by using wavefront deformation particle tracking velocimetry (PTV) developed at the Universität der Bundeswehr München. A cylindrical lens is used in conjunction with a microscope objective lens to create systematic wavefront deformations in the particle images. The particles are observed by a single camera and appear as ellipses. The elliptical nature of the particle images encodes out-of-plane information rega... »
Fakultät:
Fakultät für Luft- und Raumfahrttechnik
Institut:
LRT 7 - Institut für Strömungsmechanik und Aerodynamik