Lecturer(s)
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Kopecký Václav, prof. Ing. CSc.
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Kotek Michal, Ing. Ph.D.
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Liederhausová Darina, Ing. Ph.D., Ing.Paed.IGIP
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Course content
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Lectures: 1. Sources and detectors of optical radiation and properties of coherent radiation. 2. Laser Doppler Anemometry (LDA) - Doppler model and interference model. 3. Geometry of LDA set-up, LDA optical probe and its properties, Doppler signal. 4. Tracing particles - optical and dynamic properties. 5. LDA system elements, Bragg cell and processors for LDA signal analysis 6. Analysis of LDA data - statistical moment analysis and spectral analysis. Factors influencing LDA measurement. 7. PIV method (Particle Image Velocimetry) - principles of PIV data acquisition and analysis, system set up. 8. Methods of PIV data processing. 9. Biases and limits of PIV method. 3D-PIV method. 10. 3D PIV method and Time Resolved (TR) PIV - extension of PIV methods, interpretation of 3D data and analysis of time evaluation data 11. MicroPIV method and its application on microfluidics 12. Interferometric particle imaging method (IPI) for spray and bubbles diagnostic - principles, results interpretation 13. PLIF methods - principle of fluorescence, measurement of temperature field, concentration field and pH field. 14. Methods of quantitative visualization, using of high speed recording and data analysing Tutorials: 1. LDA optical probe basic parameter calculations. 2. Setting-up and adjustment of LDA optics. 3. Measurement of Doppler frequency and practical demonstration of interference model. 4. Set-up of LDA experiment - measurement of velocity field behind a nozzle. 5. Processing and analysis of LDA measurement results. 6. Practical demonstration of PIV system basic components. 7. Seting up and adjustment of PIV optics. 8. Measurement of practical tasks by PIV method. 9. Processing of measurement results and visualization of velocity fields. 10. Set up of microPIV system and practical measurement. 11. IPI system set up, assembling of spry measurement experiment, data acquisition and analysis. 12. Measurement of temperature fields using PLIF method - system set up, calibration, data acquisition and analysis. 13. Procedures for Global Imaging data validation and interpretation. 14. Visualization methods - shadowgraphy, high speed recording, practical triggering procedures of recording system and experimental device
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Learning activities and teaching methods
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Monological explanation (lecture, presentation,briefing), Dialogue metods(conversation,discussion,brainstorming), Self-study (text study, reading, problematic tasks, practical tasks, experiments, research, written assignments), Demonstration, Laboratory work
- Class attendance
- 56 hours per semester
- Preparation for credit
- 18 hours per semester
- Preparation for exam
- 46 hours per semester
- Preparation for laboratory testing; outcome analysis
- 30 hours per semester
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Learning outcomes
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The subject includes selected chapters of optical and other non-contact measurements in experimental fluid mechanics and mutli-phase flows applicable in applied research and industry. Students get familiarized with modern quantitative visualization methods including laser anemometry (LDA, PIV, microPIV, Time Resolved PIV), non-contact measurement of temperature and concentration fields (PLIF), methods for spry characterization (IPI) etc. Lectures are followed by practical demonstration in the laboratory of Technical university of Liberec.
Students get acquinted with selected chapters of optical and other non-contact measurement methods and acquire basic knowledge of laser anemometry and non-contact measurement of temperature fields, including practical applications. The acquired knowledge of theory, methodics and its context enable students a good orientation in complex interdisciplinary measurement methods and experiments.
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Prerequisites
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Basic knowledge of Mathematic and Physic.
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Assessment methods and criteria
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Combined examination
Activity at practical is required for obtaining the credit. Successful answers to examination questions are necessary for passing the exam.
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Recommended literature
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Kopecký, V.:. Laserová anemometrie v mechanice tekutin. Liberec, 2008. ISBN 978-80-7399-357-3.
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Raffel, M., Willert, C., Kompenhans, J.:. Particle Image Velocinetry.. Springer, 1998. ISBN 3-540-6368.
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