---
_id: '61014'
abstract:
- lang: eng
  text: '<jats:p>To obtain a more comprehensive understanding of the specific properties
    of complex-shaped technical aerosols—such as partially sintered aggregates formed
    in combustion processes or structured particles resulting from complex synthesis
    processes—it is essential to measure more than a single equivalent size. This
    study examines a novel method for determining a two-dimensional distribution of
    two distinct particle properties within the size range from 50nm to 1000nm: the
    Centrifugal Differential Mobility Analyzer (CDMA). The CDMA enables the simultaneous
    measurement of both mobility and Stokes equivalent diameters, providing a detailed
    two-dimensional particle property distribution. This, in turn, allows for the
    extraction of shape-related information, which is essential for characterizing
    particles in terms of their chemical composition, reactivity, and other physicochemical
    properties. This paper presents a detailed evaluation of a first CDMA prototype.
    First, CFD simulations of the flow field within the classifier are presented in
    order to assess and understand non-idealities arising from the exact geometry.
    Subsequently, the transfer function is evaluated by particle trajectory calculations
    based on the simulated flow field. It can be demonstrated that the simulated transfer
    functions agree quite well with transfer functions derived from streamlines of
    an ideal flow field, indicating that the non-idealities in the classifying region
    are almost negligible in their effect on the classification result. An experimental
    determination of the transfer function shows additional effects not covered by
    the previous simulations, like broadening by diffusion and losses due to diffusion
    and precipitation within the in- and outlet of the classifier. Finally, the determined
    transfer functions are used to determine the full two-dimensional distribution
    with regard to the mobility and Stokes equivalent diameter of real aerosols, like
    spherical particles and aggregates at different sintering stages, respectively.</jats:p>'
article_number: '11'
article_type: original
author:
- first_name: Torben Norbert
  full_name: Rüther, Torben Norbert
  last_name: Rüther
- first_name: Sebastian
  full_name: Gröne, Sebastian
  last_name: Gröne
- first_name: Christopher
  full_name: Dechert, Christopher
  last_name: Dechert
- first_name: Hans-Joachim
  full_name: Schmid, Hans-Joachim
  id: '464'
  last_name: Schmid
  orcid: 000-0001-8590-1921
citation:
  ama: Rüther TN, Gröne S, Dechert C, Schmid H-J. Centrifugal Differential Mobility
    Analysis—Validation and First Two-Dimensional Measurements. <i>Powders</i>. 2025;4(2).
    doi:<a href="https://doi.org/10.3390/powders4020011">10.3390/powders4020011</a>
  apa: Rüther, T. N., Gröne, S., Dechert, C., &#38; Schmid, H.-J. (2025). Centrifugal
    Differential Mobility Analysis—Validation and First Two-Dimensional Measurements.
    <i>Powders</i>, <i>4</i>(2), Article 11. <a href="https://doi.org/10.3390/powders4020011">https://doi.org/10.3390/powders4020011</a>
  bibtex: '@article{Rüther_Gröne_Dechert_Schmid_2025, title={Centrifugal Differential
    Mobility Analysis—Validation and First Two-Dimensional Measurements}, volume={4},
    DOI={<a href="https://doi.org/10.3390/powders4020011">10.3390/powders4020011</a>},
    number={211}, journal={Powders}, publisher={MDPI AG}, author={Rüther, Torben Norbert
    and Gröne, Sebastian and Dechert, Christopher and Schmid, Hans-Joachim}, year={2025}
    }'
  chicago: Rüther, Torben Norbert, Sebastian Gröne, Christopher Dechert, and Hans-Joachim
    Schmid. “Centrifugal Differential Mobility Analysis—Validation and First Two-Dimensional
    Measurements.” <i>Powders</i> 4, no. 2 (2025). <a href="https://doi.org/10.3390/powders4020011">https://doi.org/10.3390/powders4020011</a>.
  ieee: 'T. N. Rüther, S. Gröne, C. Dechert, and H.-J. Schmid, “Centrifugal Differential
    Mobility Analysis—Validation and First Two-Dimensional Measurements,” <i>Powders</i>,
    vol. 4, no. 2, Art. no. 11, 2025, doi: <a href="https://doi.org/10.3390/powders4020011">10.3390/powders4020011</a>.'
  mla: Rüther, Torben Norbert, et al. “Centrifugal Differential Mobility Analysis—Validation
    and First Two-Dimensional Measurements.” <i>Powders</i>, vol. 4, no. 2, 11, MDPI
    AG, 2025, doi:<a href="https://doi.org/10.3390/powders4020011">10.3390/powders4020011</a>.
  short: T.N. Rüther, S. Gröne, C. Dechert, H.-J. Schmid, Powders 4 (2025).
date_created: 2025-08-25T16:10:45Z
date_updated: 2025-08-25T16:15:41Z
doi: 10.3390/powders4020011
funded_apc: '1'
intvolume: '         4'
issue: '2'
keyword:
- centrifugal differential mobility analysis
- 2D-measurement
- particle characterization
- moving reference frame CFD-simulation
- transfer function
language:
- iso: eng
publication: Powders
publication_identifier:
  issn:
  - 2674-0516
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Centrifugal Differential Mobility Analysis—Validation and First Two-Dimensional
  Measurements
type: journal_article
user_id: '464'
volume: 4
year: '2025'
...
---
_id: '65007'
author:
- first_name: Felix
  full_name: Knaup, Felix
  id: '45124'
  last_name: Knaup
- first_name: Volker
  full_name: Schöppner, Volker
  id: '20530'
  last_name: Schöppner
citation:
  ama: Knaup F, Schöppner V. Improvement of a numerical two-phase simulation model
    for single-screw plasticizing extruders based on experimental investigations.
    <i>International Polymer Processing</i>. Published online 2025. doi:<a href="https://doi.org/10.1515/ipp-2025-0072">10.1515/ipp-2025-0072</a>
  apa: Knaup, F., &#38; Schöppner, V. (2025). Improvement of a numerical two-phase
    simulation model for single-screw plasticizing extruders based on experimental
    investigations. <i>International Polymer Processing</i>. <a href="https://doi.org/10.1515/ipp-2025-0072">https://doi.org/10.1515/ipp-2025-0072</a>
  bibtex: '@article{Knaup_Schöppner_2025, title={Improvement of a numerical two-phase
    simulation model for single-screw plasticizing extruders based on experimental
    investigations}, DOI={<a href="https://doi.org/10.1515/ipp-2025-0072">10.1515/ipp-2025-0072</a>},
    journal={International Polymer Processing}, author={Knaup, Felix and Schöppner,
    Volker}, year={2025} }'
  chicago: Knaup, Felix, and Volker Schöppner. “Improvement of a Numerical Two-Phase
    Simulation Model for Single-Screw Plasticizing Extruders Based on Experimental
    Investigations.” <i>International Polymer Processing</i>, 2025. <a href="https://doi.org/10.1515/ipp-2025-0072">https://doi.org/10.1515/ipp-2025-0072</a>.
  ieee: 'F. Knaup and V. Schöppner, “Improvement of a numerical two-phase simulation
    model for single-screw plasticizing extruders based on experimental investigations,”
    <i>International Polymer Processing</i>, 2025, doi: <a href="https://doi.org/10.1515/ipp-2025-0072">10.1515/ipp-2025-0072</a>.'
  mla: Knaup, Felix, and Volker Schöppner. “Improvement of a Numerical Two-Phase Simulation
    Model for Single-Screw Plasticizing Extruders Based on Experimental Investigations.”
    <i>International Polymer Processing</i>, 2025, doi:<a href="https://doi.org/10.1515/ipp-2025-0072">10.1515/ipp-2025-0072</a>.
  short: F. Knaup, V. Schöppner, International Polymer Processing (2025).
date_created: 2026-03-16T14:23:34Z
date_updated: 2026-03-18T09:17:45Z
department:
- _id: '9'
- _id: '321'
- _id: '367'
doi: 10.1515/ipp-2025-0072
keyword:
- CFD simulation
- melting modeling
- melting process
- polymer extrusion
- single-screw extruder
language:
- iso: eng
publication: International Polymer Processing
quality_controlled: '1'
status: public
title: Improvement of a numerical two-phase simulation model for single-screw plasticizing
  extruders based on experimental investigations
type: journal_article
user_id: '59363'
year: '2025'
...
---
_id: '65238'
author:
- first_name: Hogenrich
  full_name: Damanik, Hogenrich
  last_name: Damanik
- first_name: Arooj
  full_name: Fatima, Arooj
  last_name: Fatima
- first_name: Stefan
  full_name: Turek, Stefan
  last_name: Turek
- first_name: Jonas Dirk Rudolf Helmut
  full_name: Petzke, Jonas Dirk Rudolf Helmut
  id: '57512'
  last_name: Petzke
- first_name: Dennis
  full_name: Kleinschmidt, Dennis
  id: '40516'
  last_name: Kleinschmidt
- first_name: Florian
  full_name: Brüning, Florian
  id: '72920'
  last_name: Brüning
citation:
  ama: 'Damanik H, Fatima A, Turek S, Petzke JDRH, Kleinschmidt D, Brüning F. Numerical
    modeling of the non-isothermal viscoelastic flow behavior of rubber compounds
    based on the PHAN-THİEN-TANNER (PTT) model. In: <i>International Rubber Conference
    (IRC) 2025, Bangkok, BITEC; e-Abstract Book</i>. ; 2025:266–268.'
  apa: Damanik, H., Fatima, A., Turek, S., Petzke, J. D. R. H., Kleinschmidt, D.,
    &#38; Brüning, F. (2025). Numerical modeling of the non-isothermal viscoelastic
    flow behavior of rubber compounds based on the PHAN-THİEN-TANNER (PTT) model.
    In <i>International Rubber Conference (IRC) 2025, Bangkok, BITEC; e-abstract book</i>
    (pp. 266–268).
  bibtex: '@inbook{Damanik_Fatima_Turek_Petzke_Kleinschmidt_Brüning_2025, title={Numerical
    modeling of the non-isothermal viscoelastic flow behavior of rubber compounds
    based on the PHAN-THİEN-TANNER (PTT) model}, booktitle={International Rubber Conference
    (IRC) 2025, Bangkok, BITEC; e-abstract book}, author={Damanik, Hogenrich and Fatima,
    Arooj and Turek, Stefan and Petzke, Jonas Dirk Rudolf Helmut and Kleinschmidt,
    Dennis and Brüning, Florian}, year={2025}, pages={266–268} }'
  chicago: Damanik, Hogenrich, Arooj Fatima, Stefan Turek, Jonas Dirk Rudolf Helmut
    Petzke, Dennis Kleinschmidt, and Florian Brüning. “Numerical Modeling of the Non-Isothermal
    Viscoelastic Flow Behavior of Rubber Compounds Based on the PHAN-THİEN-TANNER
    (PTT) Model.” In <i>International Rubber Conference (IRC) 2025, Bangkok, BITEC;
    e-Abstract Book</i>, 266–268, 2025.
  ieee: H. Damanik, A. Fatima, S. Turek, J. D. R. H. Petzke, D. Kleinschmidt, and
    F. Brüning, “Numerical modeling of the non-isothermal viscoelastic flow behavior
    of rubber compounds based on the PHAN-THİEN-TANNER (PTT) model,” in <i>International
    Rubber Conference (IRC) 2025, Bangkok, BITEC; e-abstract book</i>, 2025, pp. 266–268.
  mla: Damanik, Hogenrich, et al. “Numerical Modeling of the Non-Isothermal Viscoelastic
    Flow Behavior of Rubber Compounds Based on the PHAN-THİEN-TANNER (PTT) Model.”
    <i>International Rubber Conference (IRC) 2025, Bangkok, BITEC; e-Abstract Book</i>,
    2025, pp. 266–268.
  short: 'H. Damanik, A. Fatima, S. Turek, J.D.R.H. Petzke, D. Kleinschmidt, F. Brüning,
    in: International Rubber Conference (IRC) 2025, Bangkok, BITEC; e-Abstract Book,
    2025, pp. 266–268.'
date_created: 2026-03-30T13:58:30Z
date_updated: 2026-03-30T14:02:19Z
department:
- _id: '9'
- _id: '321'
- _id: '367'
keyword:
- CFD simulation
- Materialmodellierung
- Phan-Thien-Tanner
- PTT
- Simulation
language:
- iso: eng
page: 266–268
publication: International Rubber Conference (IRC) 2025, Bangkok, BITEC; e-abstract
  book
quality_controlled: '1'
status: public
title: Numerical modeling of the non-isothermal viscoelastic flow behavior of rubber
  compounds based on the PHAN-THİEN-TANNER (PTT) model
type: book_chapter
user_id: '59363'
year: '2025'
...