Titlebook: Imaging Measurement Methods for Flow Analysis; Results of the DFG P Wolfgang Nitsche,Christoph Dobriloff Conference proceedings 2009 Spring

Opponent

Adherent

Time-Resolved Two- and Three-Dimensional Measurements of Transitional Separation Bubbles,separation bubbles on top of a finite circular cylinder and on the suction side of an SD7003 airfoil. A kind of three-dimensional vortex-shedding mechanism associated with the inviscid Kelvin-Helmholtz-instability has been identified to govern the flow field in both cases. The time-averaged velocity

RENAL

Coloured Tracer Particles Employed for 3-D Particle Tracking Velocimetry (PTV) in Gas Flows,red tracer particles. This method allows a considerable increase of the tracer number density, while maintaining a constant rate of 3-D correspondence ambiguities from the different cameras. It is therefore perfectly suited for gas flows, where a high tracer density is requested to follow small-scal

丛林

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壮丽的去

Quantitative Measurements of Three-Dimensional Density Fields Using the Background Oriented Schlierd. The projections of the density are tomographically reconstructed using filtered back-projection. Theoretical investigations show that the sensitivity of the BOS method depends on the geometric setup, the resolution of the camera, the focal length of the lens and the evaluation algorithm whereas t

清澈

Tomographic Reconstruction and Efficient Rendering of Refractive Gas Flows, Schlieren-tomographic system consisting of multiple consumer camcorders. A special choice of background pattern for Background Oriented Schlieren (BOS) imaging provides for flexibility in the experimental setup. Optical flow techniques are used to measure image space deflections due to heated air f

残忍

2D-Measurement Technique for Simultaneous Quantitative Determination of Mixing Ratio and Velocity Fas realized by using caged dye. For the first time patterns were generated by structured laser illumination using optical masks. This allows the generation of nearly any imaginable pattern. The flow induced deformation of the optically written pattern is tracked by imaging of laser induced fluoresce

Exhilarate

Simultaneous, Planar Determination of Fuel/Air Ratio and Velocity Field in Single Phase Mixture Forfrom 398 K up to 548 K. The measurement principle is called FARLIF (.uel-.ir .atio by .aser-.nduced .luorescence). Its application is tested on the tracer toluene in the non-fluorescent model fuel isooctane as well as on an auto-fluorescing near-standard gasoline. A frequency quadrupled double-pulse