Three-Dimensional Velocity and Vorticity Measuring and Image Analysis Techniques

1. Front Matter

   Pages i-xviii

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2. Multi-Hot-Wire Anemometry

   1. Front Matter

      Pages N1-N1

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   2. Determination of 3-D Velocity and Vorticity Vectors in Turbulent Flows by Multi-Hotwire Anemometry

      • G. Lemonis, T. Dracos

      Pages 1-42

   3. The Multichannel Constant Temperature Anemometer

      • F. E. Jørgensen

      Pages 43-58

3. Particle Image Velocimetry

   1. Front Matter

      Pages 59-59

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   2. Particle Image Velocimetry: A New Approach in Experimental Fluid Research

      • Wing T. Lai

      Pages 61-92

   3. Real-Time Signal Processing in Particle Image Velocimetry

      • D. R. McCluskey, E. Hayes

      Pages 93-112

   4. Investigation of Unsteady Flow Fields in Wind Tunnels by Means of Particle Image Velocimetry

      • J. Kompenhans, M. Raffel, C. Willert, M. Wiegel, C. Kähler, A. Schröder et al.

      Pages 113-127

   5. Three-Dimensional Particle Velocimetry

      • Klaus D. Hinsch, Heiko Hinrichs

      Pages 129-152

4. Particle Tracking Velocimetry

   1. Front Matter

      Pages 153-153

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   2. Particle Tracking Velocimetry (PTV)

      • Th. Dracos

      Pages 155-160

   3. Videogrammetry: Methodology and PTV/LIF Applications

      • A. Gruen

      Pages 161-190

   4. Contributions of Digital Photogrammetry to 3-D PTV

      • H.-G. Maas

      Pages 191-207

   5. Particle Tracking in Three-Dimensional Space

      • Th. Dracos

      Pages 209-227

   6. Establishment of a Videogrammetric PTV System

      • M. Virant, Th. Dracos

      Pages 229-254

5. Laser Induced Fluorescence Velocimetry

   1. Front Matter

      Pages 255-255

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   2. Laser Induced Fluorescence Velocimetry

      • Th. Dracos

      Pages 257-263

   3. Adaptive Least-Squares-Matching for Accurate Tracking of Patterns in Voxel Data Sequences

      • H.-G. Maas

      Pages 265-276

   4. Establishment of a Tomographic Laser Induced Fluorescence System

      • S. Deusch, Th. Dracos, P. Rys

      Pages 277-297

   5. Application and Performance of LIF-Velocimetry

      • G. J. Merkel, Th. Dracos, P. Rys, F. S. Rys

      Pages 299-310

The contents of this volume reflect to a large extent the efforts made by a group of Institutes at the ETH Zürich to develop new techniques for measurements of flows in fluids in the last decade. The motivation came from the study of tr~sport and mixing processes in natural and industrial systems. One of the characteristic properties of turbulence is its high mixing efficiency. The techniques developed are therefore suitable, although not exclusively, for turbulence measurements. They can be subdivided into point-measurements and field-measurements. The aim of the point-measurements developed is to determine the three components of the velocity and all their first derivatives with good temporal resolution and accuracy in turbulent flows. The old and weIl established method of hot-wire anemometry was used for this purpose. One of the main achievements in this context is the construction of miniature multi-wire probes. This technique was introduced to the Institute of Hydromechanics and Water Resources Management of ETH Zürich by Profs. A. Tsinober and E. Kit from Tel-Aviv University. This was made possible by the generous financial support by ETH, for which I would like to express my gratitude on this occasion. In addition, Dr. F.E. Joergensen from DANTEC contributed an example of recent developments in the hardware ofConstant Temperature Anemometry (CTA), for which I am very thankful.

• Anemometer
• Particle Image Velocimetry
• fluid mechanics
• temperature
• wind

• Institute of Hydromechanics and Water Resources Management, Swiss Federal Institute of Technology, Zürich, Switzerland

  Th. Dracos

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