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Wall Shear Stress Measurements in Artificial Heart Valves with Hot-Film Probes

  • W. Tillmann
  • G. Häußinger
Conference paper

Abstract

For blood traumatization after the implantation of artificial organs, such as artificial heart valves, the shear field generated by the prosthesis is believed to be a prime factor. Therefore, it is of interest to determine the shear stress experimentally in heart valve prostheses in a mock circuit, especially since the results of several research groups indicate that shear stresses above a critical level lead to irreversible damage of blood components. Hot film anemometry with flush mounted probes is used as measurement technique. Since the flow in the human systemic arteries is pulsatile, the hot film wall shear probes are to be calibrated under steady and unsteady flow conditions in order to determine their dynamic characteristics.

Keywords

Wall Shear Stress Heart Valve Couette Flow Wall Shear Stress Distribution Rigid Tube 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Literature

  1. (1).
    Tillmann, W., Schlieper, H.: “A Device for the Calibration of Hot Film Wall Shear Probes in Liquids” Journal of Physics E: Scientific Instruments, Vol. 12, 1979Google Scholar
  2. (2).
    Ludwieg, H.: “Ein Gerät zur Messung der Wandschubspannung turbulenter Reibungsschichten”, Ingenieurarchiv, Vol. 17, p. 207, 1949CrossRefGoogle Scholar
  3. (3).
    Ling, S.C., Atabeck, H.B. et al.: “The Application of Heated-Film Velocity and Shear Probes to Hemodynamic Studies”, Circulation Research, Vol. 23, p. 789, 1968Google Scholar
  4. (4).
    Roschke, E.J., Harrison, E.C.: “Fluid Shear Stresses in Prosthetic Heart Valves” Journal of Biomechanics, Vol. 10, p. 299–311, 1977CrossRefGoogle Scholar

Copyright information

© Proceedings of the Dynamic Flow Conference 1978

Authors and Affiliations

  • W. Tillmann
    • 1
  • G. Häußinger
    • 1
  1. 1.Helmholtz-Institut für BMTAachenGermany

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