The method of discrete singularities in the problem of determining the frequencies and modes of vibrations of turbine blades

  • Роман Павлович Москаленко
  • Виталий Васильевич Науменко
  • Елена Александровна Стрельникова
Keywords: hydro-turbine, free vibrations, liquid added masses, hypersingular equation, discrete singularities method

Abstract

The mathematical models for estimation of free vibrations of turbomachine elements in interaction with a fluid has been developed on the basis of the methods of potential theory as well as boundary singular and hypersingular integral equations. The analysis of plate vibrations with consideration of the effects of added liquid masses has been presented in the paper. The liquid is supposed to be an ideal and incompressible one and its flow is irrotational. The pressure is obtained by linearized Bernoulli integral. To evaluate a velocity potential, the system of singular boundary integral equations has been developed. The discrete singularities method has been used for its numerical solution.

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References

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Published
2017-10-27
How to Cite
Москаленко, Р. П., Науменко, В. В., & Стрельникова, Е. А. (2017). The method of discrete singularities in the problem of determining the frequencies and modes of vibrations of turbine blades. Bulletin of V.N. Karazin Kharkiv National University, Series «Mathematical Modeling. Information Technology. Automated Control Systems», 34, 44-51. Retrieved from https://periodicals.karazin.ua/mia/article/view/9608
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