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Atakan, Burak ; Roskosch, Dennis:
Thermographic phosphor thermometry in transient combustion : A theoretical study of heat transfer and accuracy.
In: Proceedings of the Combustion Institute.
Bd. 34
(2013)
Heft 2
.
- S. 3603-3610.
ISSN 1873-2704
DOI: https://doi.org/10.1016/j.proci.2012.05.022
Abstract
Thermographic phosphors (TPs) are used in combustion environments to study wall surface temperatures and heat fluxes. Recently they are also applied in unsteady environments like internal combustion engines to study the heat transfer to walls. The present study investigates theoretically some related effects leading to limitations of the method and thus trying to help experimenters to choose proper conditions for their experiments. The influence of absorptivity and film thickness is studied first. Then the unsteady heat flux of a surrounding gas phase is investigated as a function of film thickness and conductivity, including the effect on the temperatures which would be measured using TPs. The errors in temperature measurements and time resolution are investigated for typical cases. Finally the relation between the surface temperature and film thickness is investigated for combinations of two base materials (quartz and steel) coated with layers of Mg₂SiO₄ or SiO₂, as representatives for TP host materials. It is seen that the maximum surface temperature is influenced in unsteady heat transfer processes even by relatively thin layers.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Keywords: | Thermographic phosphor; Surface temperature; Heat transfer |
| Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Technische Thermodynamik und Transportprozesse |
| Titel an der UBT entstanden: | Nein |
| Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Eingestellt am: | 05 Okt 2026 06:11 |
| Letzte Änderung: | 05 Okt 2026 06:11 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/99581 |