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ISSN Online: 2377-424X

ISBN Print: 0-85295-345-3

International Heat Transfer Conference 10
August, 14-18, 1994, Brighton, UK

MODERN ELECTRONICS IN IMAGE-PROCESSING AND IN PHYSICAL MODELLING − A NEW CHALLENGE FOR OPTICAL TECHNIQUES

Get access (open in a dialog) DOI: 10.1615/IHTC10.5260
pages 61-79

Sinopsis

In heat and mass transfer and in fluiddynamics optical methods have a long tradition. For many years, however, processing data gained from optical techniques, especially from image-forming processes, was very time-consuming. New electronic devices and methods allow to reduce this data processing considerably and so image-forming processes like holography, holographic interferometry or Laser-Induced Fluorescence which provide comprehensive and detailed information on heat-, mass- or momentum exchange can be effectively and successfully applied to research and development in engineering. Modern data processing allows image-forming also from spot-wise working optical techniques like from Raman-spectroscopy. A huge amount of data can be evaluated within a short time and can be composed to a clear, vivid but also meaningful information.
For describing complicated phenomena in fluiddynamics or in heat transfer by computer programs global experimental information is not sufficient. Optical techniques provide local and instant data without disturbing the process and with a high temporal resolution. By using the results of optical measuring techniques it is possible to improve computer programs describing physical processes, and optical techniques are also very sensitive touchstones for checking the quality and the reliability of such programs.