Titlebook: Developments in Laser Techniques and Fluid Mechanics; Selected Papers from R. J. Adrian,D. F. G. Durão,J. H. Whitelaw Conference proceeding

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Formalising Evolutionary Theoryhase-Doppler anemometer (PDA) with an AID converter-based signal processor. The purpose was achieved by improved estimation of the effective area of the probe volume. The area of probe volume was calculated by a geometrical optics approximation after considering two major influences namely ‘trajecto

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Formalising Evolutionary Theoryarent particle illuminated by a laser beam; this rainbow moves in front of a photomultiplier when the particle traverses the laser beam. Frequency analysis of the recorded signal leads to the droplet size and to one component of the velocity vector. Validation experiments have been carried out using

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Darwinism and Molecular Biologyimaging technique, based on a conventional laser Doppler velocimeter and a linear photodiode array, for simultaneous particle- size and velocity measurement. The SDV also provides a measurement of the spatial position of a particle as it travels through the probe volume; as a result, it is not neces

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Formalising Evolutionary Theoryis based on two large format (2k × 2k) video cameras. Experiments in a turbulent boundary layer at .. = 2525 demonstrate its ability to measure three-dimensional turbulent flow. In addition to the quantitative value of the out-of-plane component, it is found that having the complete three-dimensiona

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https://doi.org/10.1007/978-3-642-60911-4Strömung; Strömungsmechanik; development; fluid mechanics; laser; mechanics

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Fibre Optical Multicomponent LDA-System Using the Optical Frequency Difference of Powerful DBR-Laser The resulting frequency shifts are used for the channel separation as well as for the directional discrimination. Additionally the use of one laser source for each LDA beam allows to multiply the laser power in the measuring volume..First experimental results of two dimensional directional velocity

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Two-Component Directional Laser Doppler Anemometer Based on a Frequency Modulated Nd: YAG Ring Laserh velocity component, is presented. The carrier frequencies are generated by a chirp laser frequency modulation in conjunction with fiber delay lines of different lengths. Since the carrier frequency generation is realized without involving additional frequency shift elements like Bragg cells the LD