Imaging Measurement Methods for Flow Analysis

Prof. Dr.-Ing. Wolfgang Nitsche holds the chair of Aerodynamics at the Institute of Aeronautics and Astronautics of the Technische Universität Berlin, and is coordinator of the priority programme 1147 "Imaging Measurement Methods for Flow Analysis" funded by the DFG (German Research Foundation).

• Principles of a Volumetric Velocity Measurement Technique Based on Optical Aberrations.- The Wall-PIV Measurement Technique for Near Wall Flow Fields in Biofluid Mechanics.- Laser Doppler Field Sensor for Two Dimensional Flow Measurements in Three Velocity Components.- Array Doppler Global Velocimeter with Laser Frequency Modulation for Turbulent Flow Analysis – Sensor Investigation and Application.- Self-calibrating Single Camera Doppler Global Velocimetry Based on Frequency Shift Keying.- Recent Developments in 3D-PTV and Tomo-PIV.- 3D Tomography from Few Projections in Experimental Fluid Dynamics.- Tomographic PIV for Investigation of Unsteady Flows with High Spatial and Temporal Resolution.- Time-Resolved Two- and Three-Dimensional Measurements of Transitional Separation Bubbles.- Coloured Tracer Particles Employed for 3-D Particle Tracking Velocimetry (PTV) in Gas Flows.- Two Scale Experiments via Particle Tracking Velocimetry: A Feasibility Study.- Extended Three Dimensional Particle Tracking Velocimetry for Large Enclosures.- High Density, Long-Term 3D PTV Using 3D Scanning Illumination and Telecentric Imaging.- Quantitative Measurements of Three-Dimensional Density Fields Using the Background Oriented Schlieren Technique.- Tomographic Reconstruction and Efficient Rendering of Refractive Gas Flows.- 2D-Measurement Technique for Simultaneous Quantitative Determination of Mixing Ratio and Velocity Field in Microfluidic Applications.- Simultaneous, Planar Determination of Fuel/Air Ratio and Velocity Field in Single Phase Mixture Formation Processes.- Development of Imaging Laser Diagnostics for the Validation of LE-Simulations of Flows with Heat and Mass Transfer.- Optical Measurements in the Wake of a Circular Cylinder of Finite Length at a High Reynoldsnumber.-Surface Pressure and Wall Shear Stress Measurements on a Wall Mounted Cylinder.- Numerical Simulation and Analysis of the Flow Around a Wall-Mounted Finite Cylinder.- Measurement of Distributed Unsteady Surface Pressures by Means of Piezoelectric Copolymer Coating.- AeroMEMS Sensor Arrays for Time Resolved Wall Pressure and Wall Shear Stress Measurements.- Infrared-Based Visualization of Wall Shear Stress Distributions.- Variational Approaches to Image Fluid Flow Estimation with Physical Priors.- Real-Time Approaches for Model-Based PIV and Visual Fluid Analysis.- Biocompatible Visualization of Flow Fields Generated by Microorganisms.- Nonlinear Dynamic Phase Contrast Microscopy for Microflow Analysis.- Spatiotemporal Image Analysis for Fluid Flow Measurements.- Extraction and Visualization of Flow Features.