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Optimizations of Optical Flow Measurement Systems

by Sebastian Gesemann
Doctoral thesis
Date of Examination:2017-10-23
Date of issue:2018-10-22
Advisor:Prof. Dr. Gert Lube
Referee:Prof. Dr. Gert Lube
Referee:Prof. Dr. Marcus Baum
crossref-logoPersistent Address: http://dx.doi.org/10.53846/goediss-7110

 

 

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Abstract

English

In this cumulative thesis contributions are presented that cover the computational aspects of optical measurement systems for flow investigations in aerodynamics and fluid mechanics. Flow measurements are useful in gaining an understanding of flow dynamics and validating numerical models for flow dynamics simulations. With the goal of accurately capturing and visualizing details of unsteady and moving flow structures based on recorded digital images of small tracer particles, the contributions cover a wide range from digital image processing, camera calibration, 2D and 3D reconstruction, estimation of position, velocity and acceleration, noise reduction and spatial interpolation of scattered 3D data using physically-motivated regularizations.
Keywords: particle image velocimetry; flow measurement; particle tracking; pressure estimation
 

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