Raphael Mansmann

Raphael Mansmann
University of Duisburg-Essen | uni-due · Institut für Verbrennung und Gasdynamik

Dr.-Ing.

About

14
Publications
3,090
Reads
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134
Citations
Education
October 2013 - March 2019
University of Duisburg-Essen
Field of study
  • Mechanical Engineering / Process Engineering
October 2006 - September 2013
RWTH Aachen University
Field of study
  • Mechanical Engineering / Process Engineering

Publications

Publications (14)
Article
Full-text available
In many time-resolved laser-induced incandescence (TiRe-LII) experiments, it is common practice to relate the intensity emitted by laser-heated nanoparticles to the detected LII signal through a factor (here called the intensity scaling factor, ISF) that includes the particle volume fraction and other parameters that may not be the focus of the ana...
Conference Paper
Full-text available
This paper presents measurements of spectrally and temporally resolved laser-induced incandescence (LII) signals from an ethylene laminar coflow diffusion flame using excitation wavelengths of 1064 and 532 nm for a fluence range of 0.1-10.0 mJ/mm 2. Measurements were performed at four positions in the flame to infer how soot maturity influences the...
Conference Paper
Full-text available
This paper examines the method be calculating temperatures and scaling factor, which is related to the volume fraction, from time-resolved laser-induced incandescence data on in-flame soot. A Bayesian analysis is used to estimate the probability densities for these variables, and to introduce prior information into the procedure in order to narrow...
Article
Interpreting laser-induced incandescence (LII) measurements on aerosolized nanoparticles requires a spectroscopic model that relates the measured spectral incandescence to the temperature of the nanoparticles. We present spectroscopic models for molten silicon and copper nanoparticles, which are evaluated through extinction and incandescence measur...
Conference Paper
Interpreting laser-induced incandescence (LII) measurements on synthetic nanoaerosols requires a spectroscopic model that relates spectral incandescence to the temperature of the laser energized nanoparticles. We present models for molten silicon and copper nanoparticles, which are evaluated through extinction and incandescence measurements on nano...
Conference Paper
Particle sizes of silicon nanoparticles were determined by laser-induced incandescence measurements within a microwave-plasma reactor. Literature data of the silicon vapor pressure are compared and analyzed for the suitability towards modeling LII temperature decay curves.
Article
Full-text available
This paper describes the application of time-resolved laser-induced incandescence (TiRe-LII), a combustion diagnostic used mainly for measuring soot primary particles, to size silicon nanoparticles formed within a plasma reactor. Inferring nanoparticle sizes from TiRe-LII data requires knowledge of the heat transfer through which the laser-heated n...

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Projects

Project (1)
Project
LIISim is a modular toolbox for signal processing and data analysis of laser-induced incandescence measurements. The open-source software was developed in our group for systematic data analysis and comparison. Physical properties of investigated particles can be defined in database-files and allow evaluation of LII signal traces for various material systems (soot, silicon, germanium,…). Detailed information, download links and documentation: http://www.liisim.com