Effect of Fluid Viscosity on Noise of Bileaflet Prosthetic Heart Valve
Background. Numerical simulation and experimental research have been used as powerful tools to understand and predict the behavior and mechanics of the operation of natural heart valves and their prostheses in natural and pathological conditions. Such studies help to evaluate the effectiveness of t...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Igor Sikorsky Kyiv Polytechnic Institute
2017-10-01
|
| Series: | Наукові вісті Національного технічного університету України "Київський політехнічний інститут" |
| Subjects: | |
| Online Access: | http://bulletin.kpi.ua/article/view/112097/pdf_256 |
| _version_ | 1818657420543524864 |
|---|---|
| author | Vladimir A. Voskoboinick Alberto Redaelli Oleg R. Chertov Bengamino Fiore Andrey V. Voskoboinick Aleksandr G. Rudnitckii Lidiia M. Tereshchenko Sergii V. Siryk Federico Lucherini |
| author_facet | Vladimir A. Voskoboinick Alberto Redaelli Oleg R. Chertov Bengamino Fiore Andrey V. Voskoboinick Aleksandr G. Rudnitckii Lidiia M. Tereshchenko Sergii V. Siryk Federico Lucherini |
| author_sort | Vladimir A. Voskoboinick |
| collection | DOAJ |
| description | Background. Numerical simulation and experimental research have been used as powerful tools to understand and predict the behavior and mechanics of the operation of natural heart valves and their prostheses in natural and pathological conditions. Such studies help to evaluate the effectiveness of the valves, their design and the results of surgical procedures, to diagnose healthy and impaired function of the heart valves. There is an actual problem in creating more reliable methods and tools for the operation diagnostics of mechanical heart valves.
Objective. The aim of the research is to investigate the effect of fluid viscosity on the hydroacoustic characteristics of jets that flow from a semi-closed and open mechanical bileaflet heart valve. To study the possibility of using hydroacoustic measuring instruments as diagnostic equipment for determining the working conditions of the bileaflet prosthetic heart valve.
Methods. The experimental research was carried out by means of hydroacoustic measurements of the hydrodynamic noise in the near wake of the side and central jets of the glycerin solution and the pure water flow downstream of the prosthetic bileaflet heart valve.
Results. The effect of fluid viscosity on the hydroacoustic characteristics of the jets that flow from a semi-closed and open mechanical bileaflet heart valve has been experimentally determined. Integral and spectral characteristics of the hydrodynamic noise of jets of the glycerin solution and the pure water flow downstream of the bileaflet mitral heart valve for different fluid rate were detected.
Conclusions. In the stream conditions of pure water, the integral characteristics of the pressure field are lower than in stream conditions of the aqueous glycerin solution. As the glycerin concentration in the solution increases, increase average pressures and especially RMS pressure fluctuations. The spectral levels of the hydrodynamic noise in the near wake of the side jet of the glycerin solution are lower than for water flow in the frequency ranges from 1 to 7-8 Hz and from 100 to 1000 Hz for fluid rate 5 l/min. For higher fluid rates, the spectral components of the hydrodynamic noise in the near wake of the side jet of the glycerin solution of the semi-closed mitral valve are higher than that for the pure water. The greatest difference (1.5–1.8 times) in the spectral levels is observed in the frequency range from 10 to 100 Hz for the fluid rate 15 l/min. |
| first_indexed | 2024-12-17T03:41:12Z |
| format | Article |
| id | doaj.art-4e949bbbf2a045cb9dd3f2225bfa0d71 |
| institution | Directory Open Access Journal |
| issn | 1810-0546 2519-8890 |
| language | English |
| last_indexed | 2024-12-17T03:41:12Z |
| publishDate | 2017-10-01 |
| publisher | Igor Sikorsky Kyiv Polytechnic Institute |
| record_format | Article |
| series | Наукові вісті Національного технічного університету України "Київський політехнічний інститут" |
| spelling | doaj.art-4e949bbbf2a045cb9dd3f2225bfa0d712022-12-21T22:05:00ZengIgor Sikorsky Kyiv Polytechnic InstituteНаукові вісті Національного технічного університету України "Київський політехнічний інститут"1810-05462519-88902017-10-015415010.20535/1810-0546.2017.5.112097Effect of Fluid Viscosity on Noise of Bileaflet Prosthetic Heart ValveVladimir A. Voskoboinick0Alberto Redaelli1Oleg R. Chertov2Bengamino Fiore3Andrey V. Voskoboinick4Aleksandr G. Rudnitckii5Lidiia M. Tereshchenko6Sergii V. Siryk7Federico Lucherini8Institute of Hydromechanics NAS of Ukraine UkrainePolitecnico di Milano Igor Sikorsky Kyiv Polytechnic Institute Politecnico di Milano Institute of Hydromechanics NAS of Ukraine UkraineInstitute of Hydromechanics NAS of Ukraine UkraineInstitute of Hydromechanics NAS of Ukraine UkraineIgor Sikorsky Kyiv Polytechnic Institute Politecnico di Milano Background. Numerical simulation and experimental research have been used as powerful tools to understand and predict the behavior and mechanics of the operation of natural heart valves and their prostheses in natural and pathological conditions. Such studies help to evaluate the effectiveness of the valves, their design and the results of surgical procedures, to diagnose healthy and impaired function of the heart valves. There is an actual problem in creating more reliable methods and tools for the operation diagnostics of mechanical heart valves. Objective. The aim of the research is to investigate the effect of fluid viscosity on the hydroacoustic characteristics of jets that flow from a semi-closed and open mechanical bileaflet heart valve. To study the possibility of using hydroacoustic measuring instruments as diagnostic equipment for determining the working conditions of the bileaflet prosthetic heart valve. Methods. The experimental research was carried out by means of hydroacoustic measurements of the hydrodynamic noise in the near wake of the side and central jets of the glycerin solution and the pure water flow downstream of the prosthetic bileaflet heart valve. Results. The effect of fluid viscosity on the hydroacoustic characteristics of the jets that flow from a semi-closed and open mechanical bileaflet heart valve has been experimentally determined. Integral and spectral characteristics of the hydrodynamic noise of jets of the glycerin solution and the pure water flow downstream of the bileaflet mitral heart valve for different fluid rate were detected. Conclusions. In the stream conditions of pure water, the integral characteristics of the pressure field are lower than in stream conditions of the aqueous glycerin solution. As the glycerin concentration in the solution increases, increase average pressures and especially RMS pressure fluctuations. The spectral levels of the hydrodynamic noise in the near wake of the side jet of the glycerin solution are lower than for water flow in the frequency ranges from 1 to 7-8 Hz and from 100 to 1000 Hz for fluid rate 5 l/min. For higher fluid rates, the spectral components of the hydrodynamic noise in the near wake of the side jet of the glycerin solution of the semi-closed mitral valve are higher than that for the pure water. The greatest difference (1.5–1.8 times) in the spectral levels is observed in the frequency range from 10 to 100 Hz for the fluid rate 15 l/min.http://bulletin.kpi.ua/article/view/112097/pdf_256Prosthetic bileaflet heart valveKinematic viscosityHydroacoustic measurementPressure fluctuations |
| spellingShingle | Vladimir A. Voskoboinick Alberto Redaelli Oleg R. Chertov Bengamino Fiore Andrey V. Voskoboinick Aleksandr G. Rudnitckii Lidiia M. Tereshchenko Sergii V. Siryk Federico Lucherini Effect of Fluid Viscosity on Noise of Bileaflet Prosthetic Heart Valve Наукові вісті Національного технічного університету України "Київський політехнічний інститут" Prosthetic bileaflet heart valve Kinematic viscosity Hydroacoustic measurement Pressure fluctuations |
| title | Effect of Fluid Viscosity on Noise of Bileaflet Prosthetic Heart Valve |
| title_full | Effect of Fluid Viscosity on Noise of Bileaflet Prosthetic Heart Valve |
| title_fullStr | Effect of Fluid Viscosity on Noise of Bileaflet Prosthetic Heart Valve |
| title_full_unstemmed | Effect of Fluid Viscosity on Noise of Bileaflet Prosthetic Heart Valve |
| title_short | Effect of Fluid Viscosity on Noise of Bileaflet Prosthetic Heart Valve |
| title_sort | effect of fluid viscosity on noise of bileaflet prosthetic heart valve |
| topic | Prosthetic bileaflet heart valve Kinematic viscosity Hydroacoustic measurement Pressure fluctuations |
| url | http://bulletin.kpi.ua/article/view/112097/pdf_256 |
| work_keys_str_mv | AT vladimiravoskoboinick effectoffluidviscosityonnoiseofbileafletprostheticheartvalve AT albertoredaelli effectoffluidviscosityonnoiseofbileafletprostheticheartvalve AT olegrchertov effectoffluidviscosityonnoiseofbileafletprostheticheartvalve AT bengaminofiore effectoffluidviscosityonnoiseofbileafletprostheticheartvalve AT andreyvvoskoboinick effectoffluidviscosityonnoiseofbileafletprostheticheartvalve AT aleksandrgrudnitckii effectoffluidviscosityonnoiseofbileafletprostheticheartvalve AT lidiiamtereshchenko effectoffluidviscosityonnoiseofbileafletprostheticheartvalve AT sergiivsiryk effectoffluidviscosityonnoiseofbileafletprostheticheartvalve AT federicolucherini effectoffluidviscosityonnoiseofbileafletprostheticheartvalve |