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Multiparameter Determination of Thin Liquid Urea-Water Films

Kley, Sani van der ; Goet, Gabriele ; Schmidt, Anna ; Einspieler, Valentina ; Wagner, Steven (2022)
Multiparameter Determination of Thin Liquid Urea-Water Films.
In: Applied Sciences, 2022, 11 (19)
doi: 10.26083/tuprints-00021277
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Multiparameter Determination of Thin Liquid Urea-Water Films
Language: English
Date: 2022
Place of Publication: Darmstadt
Year of primary publication: 2022
Publisher: MDPI
Journal or Publication Title: Applied Sciences
Volume of the journal: 11
Issue Number: 19
Collation: 11 Seiten
DOI: 10.26083/tuprints-00021277
Corresponding Links:
Origin: Secondary publication via sponsored Golden Open Access

In this work, wavelengths were determined for the robust and simultaneous measurement of film thickness, urea concentration and fluid temperature. Film parameters such as film thickness, film temperature and the composition of the film are typically dynamically and interdependently changing. To gain knowledge of these quantities, a measurement method is required that offers a high temporal resolution while being non-intrusive so as to not disturb the film as well as the process conditions. We propose the extension of the FMLAS method, which was previously validated for the film thickness measurement of thin liquid films, to determine temperatures and concentrations using an adapted evaluation approach.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-212779
Additional Information:

This article belongs to the Special Issue Diode Laser Spectroscopy – Robust Sensing for Environmental and Industrial Applications

Keywords: laser diagnostic; spectroscopy; film thickness; selective catalytic reduction

Classification DDC: 600 Technology, medicine, applied sciences > 600 Technology
Divisions: Profile Areas > Thermo-Fluids & Interfaces
16 Department of Mechanical Engineering > Institute of Reactive Flows and Diagnostics (RSM)
Date Deposited: 13 May 2022 12:08
Last Modified: 23 Aug 2022 12:11
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/21277
PPN: 494719958
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