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  • Measurement of temperature field in moving fluids is connected with many difficulties. Usage of point temperature measurement methods, such as Constant Current Anemometry (CCA), is limited to frequencies up to 3 kHz. This frequency should be the limiting factor for using the CCA in fluid when fast change of temperature occurs. This shortcoming of CCA measurements should be overcome by using of optical methods such as Digital Holographic Interferometry (DHI). It is necessary to employ a special holographic setup with double sensitivity instead of the commonly used Mach-Zehnder type of holographic interferometer in order to obtain the parameters sufficient for the studied cases. This setup is not light efficient like the Mach-Zehnder type but has double sensitivity. The article also shows the method of synchronization and the method for phase averaging of the acquired data. The presented DHI is based on a modified Twymann-Green setup.
  • Measurement of temperature field in moving fluids is connected with many difficulties. Usage of point temperature measurement methods, such as Constant Current Anemometry (CCA), is limited to frequencies up to 3 kHz. This frequency should be the limiting factor for using the CCA in fluid when fast change of temperature occurs. This shortcoming of CCA measurements should be overcome by using of optical methods such as Digital Holographic Interferometry (DHI). It is necessary to employ a special holographic setup with double sensitivity instead of the commonly used Mach-Zehnder type of holographic interferometer in order to obtain the parameters sufficient for the studied cases. This setup is not light efficient like the Mach-Zehnder type but has double sensitivity. The article also shows the method of synchronization and the method for phase averaging of the acquired data. The presented DHI is based on a modified Twymann-Green setup. (en)
Title
  • Holographic interferometry as a tool for visualization of temperature fields in air
  • Holographic interferometry as a tool for visualization of temperature fields in air (en)
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  • Holographic interferometry as a tool for visualization of temperature fields in air
  • Holographic interferometry as a tool for visualization of temperature fields in air (en)
skos:notation
  • RIV/46747885:24210/13:#0005574!RIV14-GA0-24210___
http://linked.open...avai/predkladatel
http://linked.open...avai/riv/aktivita
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  • I, P(GCP101/11/J019), P(IAA200760801), S
http://linked.open...iv/cisloPeriodika
  • 3/4
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
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  • 77963
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  • RIV/46747885:24210/13:#0005574
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  • DHI; Mach-Zender holographic interferometer; Twymann-Green interferometer (en)
http://linked.open.../riv/klicoveSlovo
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  • CZ - Česká republika
http://linked.open...ontrolniKodProRIV
  • [2DBD8D03A0C0]
http://linked.open...i/riv/nazevZdroje
  • Engineering Mechanics
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http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 20
http://linked.open...iv/tvurceVysledku
  • Dančová, Petra
  • Doleček, Roman
  • Lédl, Vít
  • Trávníček, Zdeněk
  • Vít, Tomáš
issn
  • 1802-1484
number of pages
http://localhost/t...ganizacniJednotka
  • 24210
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