Characterization of fluorescence tracers for thermometry and film thickness measurements in liquid coolants relevant for thermal management of electric and …

M Koegl, M Delwig, L Zigan - Sensors, 2022 - mdpi.com
This study investigated a novel two-color LIF (laser-induced fluorescence) technique for
thermometry in coolants relevant for electric components. In principle, this diagnostic …

Optimization of planar LIF/Mie imaging for droplet sizing characterization of dilute sprays

S Garcia, P Doublet, C Lempereur, G Illac, M Stiti… - Experiments in …, 2023 - Springer
The aim of this work is to investigate the planar LIF/Mie droplet sizing technique from an
experimental and theoretical point of view. This technique is a good alternative compared to …

Polarization-dependent LIF/Mie ratio for sizing of micrometric ethanol droplets doped with Nile red

M Koegl, H Dai, K Baderschneider, H Ulrich, L Zigan - Applied Optics, 2022 - opg.optica.org
The present study deals with droplet sizing based on laser-induced fluorescence (LIF) and
Mie scattering for varied polarization of the utilized laser (parallel or perpendicular). The …

Characterization of nile red as a tracer for laser-induced fluorescence spectroscopy of gasoline and kerosene and their mixture with biofuels

M Koegl, C Mull, K Baderschneider, J Wislicenus… - Sensors, 2019 - mdpi.com
Suitable fluorescence tracers (“dyes”) are needed for the planar measurement of droplet
sizes by using a combination of laser-induced fluorescence (LIF) and Mie scattering …

Planar droplet sizing for studying the influence of ethanol admixture on the spray structure of gasoline sprays

M Koegl, YN Mishra, K Baderschneider, C Conrad… - Experiments in …, 2020 - Springer
A novel planar droplet sizing (PDS) technique based on laser-induced fluorescence (LIF)
and Mie-scattering is utilized for the characterization of the spray structure under gasoline …

Analysis of the LIF/Mie ratio from individual droplets for planar droplet sizing: application to gasoline fuels and their mixtures with ethanol

M Koegl, K Baderschneider, FJ Bauer, B Hofbeck… - Applied Sciences, 2019 - mdpi.com
In this work, the possibility of using planar droplet sizing (PDS) based on laser-induced
fluorescence (LIF) and Mie scattering was investigated within the framework of measuring …

Simultaneous film temperature and film thickness measurements for jet impingement applications using two-color laser-induced fluorescence

M Koegl, N Mil 'to, L Zigan - Experiments in Fluids, 2024 - Springer
The study investigates a jet impingement cooling process of a cylindrical geometry relevant
for electric and electronic applications. The applied two-color detection technique enables a …

A novel approach for measurement of composition and temperature of N-decane/butanol blends using two-color laser-induced fluorescence of nile red

M Koegl, M Pahlevani, L Zigan - Sensors, 2020 - mdpi.com
In this work, the possibility of using a two-color LIF (laser-induced fluorescence) approach
for fuel composition and temperature measurements using nile red dissolved in n …

Optimization of SLIPI–polarization ratio imaging for droplets sizing in dense sprays

S Garcia, M Stiti, P Doublet, C Lempereur, M Orain… - Experiments in …, 2024 - Springer
In this article, structured laser illumination planar imaging and polarization ratio techniques
are successfully combined to size droplets in various optically dense sprays. The …

A novel laser-induced fluorescence concept for thermometry measurements in machining lubricoolants

M Koegl, J Glahn, L Zigan - Measurement Science and …, 2024 - iopscience.iop.org
This study investigates a two-colour laser-induced fluorescence (LIF) technique for
thermometry in cooling lubricants (CL) for machining. The diagnostic technique should …