Coherence concepts in holographic particle image velocimetry

Herrmann, Sven F; Hinrichs, H.; Hinsch, Klaus D.; Surmann, C.

doi:10.1007/s003480070013

Cited by 13 publications

(6 citation statements)

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“…The way to retrieve this information from the hologram is to read virtual planes from the hologram with a CCD camera, and perform regular 2D PIV on the resulting image. By combining parallel and perpendicular planes afterwards, the whole volume can be mapped (Hermann et al 2000). The advantage and great power of HPIV is that all 3D fluid movements are recorded instantaneously with a high resolution and are available for later evaluation.…”

Section: Alternative Piv Techniquesmentioning

confidence: 99%

Basics and principles of particle image velocimetry (PIV) for mapping biogenic and biologically relevant flows

Stamhuis

2006

Aquat Ecol

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Section: Alternative Piv Techniquesmentioning

confidence: 99%

Basics and principles of particle image velocimetry (PIV) for mapping biogenic and biologically relevant flows

Stamhuis

2006

Aquat Ecol

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“…In its simplest form a holographic plate is placed close to a¯ow volume that is illuminated by a double-pulsed laser beam [39]. Two reference beams are also projected on to the plate and then replayed during reconstruction to generate the original particle ®eld (Fig.…”

Section: Holographic Particle Image Velocimetrymentioning

confidence: 99%

The application of laser measurement techniques to aerospace flows

Lawson

2004

Proceedings of the Institution of Mechanical Engineers, Part G:

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Laser measurement techniques are becoming more commonly applied to many areas of thermo¯uids and heat transfer. An area of their application, which presents highly challenging requirements, is in the measurement of aerospace¯ows. In this case the experimentalist may encounter high mass¯owrates, high-speed¯ows and in some cases high temperatures, and the measurements may also have to be taken with restricted optical access. Such types of¯ow have already been measured using established laser techniques such as particle image velocimetry, laser Doppler anemometry, laser-induced¯uorescence and liquid crystal thermography. Other more recent techniques which have seen application include Doppler global velocimetry and molecular tagging velocimetry for velocity measurement and thermographic phosphor thermometry for surface temperature measurement. This paper reviews the most recent advances in laser techniques and their application to aerospace environments.

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“…Realimage reconstruction by conjugate reference beams from a laser diode of the same wavelength eliminates all distortion effects including those of windows and lenses. • In a principally different set-up of backscattering geometry a study is conducted of the onset of turbulence in an air-jet flow with light-in-flight holography (Herrmann et al 2000a, 2000b. Light from a ruby laser several millimetres in coherence length allows one to extract sheet-wise information from the deepvolume reconstructed virtual particle-image field-to be interrogated by traditional PIV software.…”

Section: State-of-the-art In Hpivmentioning

confidence: 99%

Holographic particle image velocimetry

Hinsch

2002

Meas. Sci. Technol.

206

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Holography is truly the key to three dimensions in particle image velocimetry, i.e. the measurement of all spatial components of the velocity vector-and this over a deep measuring field. Sophisticated instruments have been designed that successfully tackle practical problems such as the low scattering efficiency of particles, the inferior depth resolution or the aberrations and distortions in the reconstruction. Furthermore, efficient strategies are introduced to interrogate the holographic storage and process the huge amount of data towards a final flow field representation. Recently, phase-sensitive metrology, familiar in many fields of experimental mechanics, has been examined for use in particle velocimetry. Suitable methods are holographic and speckle interferometry or the optical processing of data for three-dimensional correlation. While in these techniques the power of optics is unrivalled, the practical advantage of video and digital techniques over photographic recording is obvious. The electronic version of speckle interferometry (ESPI/DSPI) is a well-established method used in laser metrology and has received further exploitation for applications in flow analysis recently. Finally, the state-of-the-art of digital particle holography is reviewed to allow estimates of its future in experimental flow analysis.

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Coherence concepts in holographic particle image velocimetry

Cited by 13 publications

References 0 publications

Basics and principles of particle image velocimetry (PIV) for mapping biogenic and biologically relevant flows

Basics and principles of particle image velocimetry (PIV) for mapping biogenic and biologically relevant flows

The application of laser measurement techniques to aerospace flows

Holographic particle image velocimetry

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