A method for the accurate numerical prediction of the tip vortices shed from hydrofoils

• Autorzy: Flaszyński P. , Szantyr J. A. , Dymarski P. , Kraskowski M.
• Języki publikacji: EN

Abstrakty

EN

The possibly accurate numerical prediction of the detailed structure of vortices shed from the tips of hydrofoils is an important element of the design process of marine propellers. The concentrated tip vortices are responsible for the propeller cavitation erosion and acoustic emission. The purpose of the project described in this paper was to develop the numerical method for prediction of the tip vortex structure. In the course of the project the numerical calculations were confronted with the results of experimental measurements. This led to creation of the specific method of construction of the computational grid and to selection of the optimum turbulence model. As a result the reliable method for the accurate numerical prediction of the concentrated tip vortices for different hydrofoil geometry and flow conditions has been developed and validated. This method enables elimination of the unfavourable phenomena related to the tip vortices in the course of the propeller design calculations.

Słowa kluczowe

EN

marine propulsors; vortex generation; numerical methods; experimental techniques

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2010
• Tom: nr 2
• Strony: 10--17
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Flaszyński P.

autor

Szantyr J. A.

autor

Dymarski P.

autor

Kraskowski M.

• Faculty of Mechanical Engineering Gdansk University of Technology Narutowicza 11/12 80-231 Gdansk

Bibliografia

• 1. Dymarski P., Szantyr J., Flaszyński P., Kraskowski M., Biernacki R.: Modelling of Tip Vortex Behind a Blade Using Different Turbulence Models and Different RANSE Solvers. Comparison with LDA Measurements, Proc. of the 11th Numerical Towing Tank Symposium, Brest, France, September 8-10 2008
• 2. Flaszyński P., Szantyr J., Dymarski P., Krasowski M.: Numerical Prediction of Vortex Generated by a Hydrofoil, Proc. of the International Symposium on Marine Propulsors, Trondheim, Norway, June 22-24, 2009
• 3. Flaszyński P., Szantyr J., Biernacki R., Dymarski P., Kraskowski M,: An Experimental and Numerical Study of the Vortices Generated by Hydrofoils, Polish Maritime Research Vol. 16, No. 4 (63), 2009
• 4. CTO S.A. Report No. RH-2008/T-133 Results of measurements of the velocity field in the vortex path behind the hydrofoils (in Polish)
• 5. CTO S.A. Report No. RH-2008/T-019 Calculations for the first variant of the discrete mesh – program Fluent (in Polish)
• 6. CTO S.A. Report No. RH-2008/T-020 Calculations for the first variant of the discrete mesh – programs Comet and Solaga (in Polish)
• 7. CTO S.A. Report No. RH-2008/T-110 Calculations for the second variant of the discrete mesh – program Fluent (in Polish)
• 8. CTO S.A. Report No. RH-2008/T-111 Calculations for the second variant of the discrete mesh – program Comet (in Polish)
• 9. CTO S.A. Report No. RH-2009/T-019 Calculations for the third variant of the discrete mesh – program Comet (in Polish)
• 10. CTO S.A. Report No. RH-2009/T-019 Calculations for the third variant of the discrete mesh – program Comet (in Polish)