Description
Areas of application
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Non-steady-state flows: Both spatially and temporally high-resolution point flow measurement
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Non-contact measurements: The non-invasive method enables precise flow measurement without influencing it
Functionality
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Measurement variables: Two-dimensional velocity vectors and turbulent fluctuation variables
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Measurement principle: Two coherent laser beams generate an interference pattern in the measurement volume, the interference of which is detected by fluid particles
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Doppler burst signals: The speed and direction of the flow are calculated from the signal changes
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Interference pattern: The direction is determined by the frequency shift through the Bragg cell
Properties
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Calibration-free: The method requires no calibration
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High temporal resolution: Optimal detection of highly turbulent flows
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Multi-dimensional flow analysis: Detection of up to three velocity components simultaneously
