Analysis of hydrodynamic losses for various types of aortic valves

I. M. Starobin, S. P. Lupachev, R. V. Dolgopolov, V. M. Zaiko, V. A. Kas'yanov, D. D. Mungalov, G. V. Morov

Research output: Contribution to journalArticlepeer-review


The creation of an automated computer-controlled hydraulic stand made it possible to measure the main hydrodynamic parameters of the flow through the investigated HVP and to determine the coefficients of Eq. (2) of fluid flow in the test chamber of the stand. The coefficients found can serve as a criterion of a comparative assessment of the hydrodynamics of HVPs. An analysis of the coefficients showed that the main contribution to pressure losses across ball and disc valves is made by viscous and convective effects. An analysis of inertial losses confirmed the presence of oscillations of the ball closing elements of the AKCh-3-06 valve around the props of the stroke limiters and made it possible to assess them quantitatively. For leaflet valves the contribution of inertial losses to the total pressure losses is more considerable than in the case of disc and ball valves both in the regime of an increase of power of the output and in the regime of a constant power. The mechanical properties of the material of leaflet valves have an effect on the hydrodynamic characteristics. The advantage of the investigated leaflet valves consists not only in that they have smaller total hydraulic losses compared with the other valves, but also in that they provide a high amplitude of pulsations of the blood stream in the case of insufficient contractility of the heart.

Original languageEnglish
Pages (from-to)349-354
Number of pages6
JournalMechanics of Composite Materials
Issue number3
Publication statusPublished - May 1985
Externally publishedYes

Field of Science*

  • 2.5 Materials engineering
  • 2.6 Medical engineering

Publication Type*

  • 1.1. Scientific article indexed in Web of Science and/or Scopus database


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