{
"title": "Holografic Interferometry used for Measurement of Temperature Field in Fluid",
"authors": "V\u00edt L\u00e9dl, Tom\u00e1\u0161 V\u00edt, Pavel Psota, Roman Dole\u010dek",
"country": null,
"institution": null,
"volume": "59",
"journal": "International Journal of Mathematical, Computational, Physical, Electrical and Computer Engineering",
"pagesStart": 1746,
"pagesEnd": 1750,
"ISSN": "1307-6892",
"URL": "http:\/\/waset.org\/publications\/5902",
"abstract": "The presented paper shows the possibility of using\r\nholographic interferometry for measurement of temperature field in\r\nmoving fluids. There are a few methods for identification of velocity\r\nfields in fluids, such us LDA, PIV, hot wire anemometry. It is very\r\ndifficult to measure the temperature field in moving fluids. One of the\r\noften used methods is Constant Current Anemometry (CCA), which\r\nis a point temperature measurement method. Data are possibly\r\nacquired at frequencies up to 1000Hz. This frequency should be\r\nlimiting factor for using of CCA in fluid when fast change of\r\ntemperature occurs. This shortcoming of CCA measurements should\r\nbe overcome by using of optical methods such as holographic\r\ninterferometry. It is necessary to employ a special holographic setup\r\nwith double sensitivity instead of the commonly used Mach-Zehnder\r\ntype of holographic interferometer in order to attain the parameters\r\nsufficient for the studied case. This setup is not light efficient like the\r\nMach-Zehnder type but has double sensitivity. The special technique\r\nof acquiring and phase averaging of results from holographic\r\ninterferometry is also presented. The results from the holographic\r\ninterferometry experiments will be compared with the temperature\r\nfield achieved by methods CCA method.",
"references": null,
"publisher": "World Academy of Science, Engineering and Technology",
"index": "International Science Index 59, 2011"
}