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Statements

Subject Item
n2:RIV%2F46747885%3A24210%2F13%3A%230005574%21RIV14-GA0-24210___
rdf:type
skos:Concept n13:Vysledek
dcterms:description
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.
dcterms: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
skos:prefLabel
Holographic interferometry as a tool for visualization of temperature fields in air Holographic interferometry as a tool for visualization of temperature fields in air
skos:notation
RIV/46747885:24210/13:#0005574!RIV14-GA0-24210___
n13:predkladatel
n14:orjk%3A24210
n3:aktivita
n15:S n15:P n15:I
n3:aktivity
I, P(GCP101/11/J019), P(IAA200760801), S
n3:cisloPeriodika
3/4
n3:dodaniDat
n11:2014
n3:domaciTvurceVysledku
n19:9213848 n19:5155320
n3:druhVysledku
n17:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n4:predkladatel
n3:idSjednocenehoVysledku
77963
n3:idVysledku
RIV/46747885:24210/13:#0005574
n3:jazykVysledku
n7:eng
n3:klicovaSlova
DHI; Mach-Zender holographic interferometer; Twymann-Green interferometer
n3:klicoveSlovo
n16:DHI n16:Mach-Zender%20holographic%20interferometer n16:Twymann-Green%20interferometer
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[2DBD8D03A0C0]
n3:nazevZdroje
Engineering Mechanics
n3:obor
n5:JE
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
5
n3:projekt
n12:GCP101%2F11%2FJ019 n12:IAA200760801
n3:rokUplatneniVysledku
n11:2013
n3:svazekPeriodika
20
n3:tvurceVysledku
Lédl, Vít Trávníček, Zdeněk Doleček, Roman Dančová, Petra Vít, Tomáš
s:issn
1802-1484
s:numberOfPages
8
n9:organizacniJednotka
24210