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Methodical Investigation of Vehicle Side Glass Soiling Phenomena

  • Thomas Landwehr
  • Timo Kuthada
  • Jochen Wiedemann
Conference paper

Abstract

Bad weather conditions such as rain and snow affect driving comfort and safety. An unobstructed view onto the surrounding traffic is indispensable. Water whirled up by preceding vehicles can soil the vehicle windows. Depending on the resulting soiling pattern, this can impair the visibility. Therefore, the origin of the vehicle side glass soiling and its influencing factors were investigated in a wind tunnel, resulting in the identification of different soiling phenomena. A crucial parameter is the surface condition as a function of the velocity. Additionally, a new evaluation method is presented which detects and classifies the different types of water accumulations and illustrates the local soiling frequency. It provides information about the composition of soiling patterns and thus can support to during the development process for side glass soiling.

Abbreviations

UV

Ultraviolet

DiVeAn

Digitale Verschmutzungs-Analyse, engl.: Digital soiling analysis

RGB

Red–green–blue

CF

Contamination Factor

SAT

Spray and thin film

VG

Verschmutzungsgrad, engl.: Degree of soiling

FW

Filterwert, engl.: Filter value

References

  1. 1.
    Spruss, I.: Ein Beitrag zur Untersuchung der Kraftfahrzeugverschmutzung in Experiment und Simulation. Dissertation, Universität Stuttgart, Stuttgart (2015)Google Scholar
  2. 2.
    Landwehr, T., Kuthada, T., Wiedemann, J.: Refraction properties of light at wetted vehicle glass planes. In: 17th Stuttgart International Symposium (2017)Google Scholar
  3. 3.
    Landwehr, T., Kuthada, T., Widdecke, N., Wiedemann, J.: Investigation of visibility properties through wetted glass planes on vehicles. In: 16th Stuttgart International Symposium (2016)Google Scholar
  4. 4.
    Widdecke, N., Kuthada, T., Wiedemann, J.: Moderne Verfahrensweisen zur Untersuchung der Fahrzeugverschmutzung. In: Tagung “Aerodynamik des Kraftfahrzeugs“, Haus der Technik e.V. München (2001)Google Scholar
  5. 5.
    Karbon, K.J., Longman, S.E.: Automobile exterior water flow analysis using CFD and wind tunnel visualization. SAE technical paper 980035, Society of Automotive Engineers, SAE, Warrendale, PA (1998)Google Scholar
  6. 6.
    Vollmer, H., Gau, H., Klußmann, S., Kuthada, T., Wiedemann, J.: Comparison of on-road and wind tunnel testing of side window soiling using a new method. In: Wiedemann, J. (Hrsg.) Progress in Vehicle Aerodynamics and Thermal Management: Proceedings of the 10th FKFS Conference, pp. S. 276–288. Expert-Verlag, Renningen (2015)Google Scholar
  7. 7.
    Bannister, M.: Drag and dirt deposition mechanisms of external rear view mirrors and techniques used for optimization. In: Society of Automotive Engineers, Inc. 2000-01-0486Google Scholar
  8. 8.
    Vollmer, H., Gau, H., Winkelmann, H., Kuthada, T., Wiedemann, J.: Methode zur Bewertung der Sichtfreihaltung bei Regen. In: Tagung “Aerodynamik des Kraftfahrzeugs“, Haus der Technik e.V. München (2014)Google Scholar
  9. 9.
    Kuthada, T., Widdecke, N., Wiedemann, J.: Advanced investigation methods on vehicle soiling. In: 4th MIRA International Vehicle Aerodynamics Conference, Warwick (2002)Google Scholar
  10. 10.
    Sauvola, J., Pietikäinen, M.: Adaptive document image binarization. Pattern Recogn. 33, 225–236 (2000)CrossRefGoogle Scholar
  11. 11.
    Burges, C.J.C.: A tutorial on support vector machines for pattern recognition. Data Min. Knowl. Discov. 2(2), 121–167 (1998)CrossRefGoogle Scholar
  12. 12.
    Höfer, P., Mößner, A.: Schmutzfreihaltung. In: Schütz, T. (Hrsg.) Hucho – Aerodynamik des Automobils: 6. Auflage, pp. S. 464–484. Springer Vieweg, Wiesbaden (2013). ISBN 978-3-8348-2316-8Google Scholar
  13. 13.
    Spruss, I., Landwehr, T., Kuthada, T., Wiedemann, J.: Advanced investigation methods on side glass soiling. In: Wiedemann, J. (Hrsg.) Progress in Vehicle Aerodynamics and Thermal Management: Proceedings of the 9th FKFS Conference, pp. S. 167–181. Expert-Verlag, Renningen (2013)Google Scholar
  14. 14.
    DIN 55660-1: Beschichtungsstoffe – Benetzbarkeit – Teil 1: Begriffe und allgemeine Grundlagen. Beuth Verlag, Berlin (2011)Google Scholar

Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  • Thomas Landwehr
    • 1
  • Timo Kuthada
    • 1
  • Jochen Wiedemann
    • 1
  1. 1.FKFSStuttgartGermany

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