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26 results on '"Zotti, I. ."'

6. Theoretical and Experimental Comparison between the Resistance Components of a fast Catamaran in different Configurations

Author

Damiano, C, Stroligo, M, Zotti, I., VIRZI' MARIOTTI, Gabriele, ATENA, Damiano, C, Stroligo, M, VIRZÌ MARIOTTI, G, Zotti, Igor, Virzi' Mariotti, G, and Zotti, I

Subjects
Fast catamaran, resistance test, CFD, resistance, Settore ING-IND/14 - Progettazione Meccanica E Costruzione Di Macchine, Passenger catamaran, CFD
Abstract

The investigation performed by the Authors represents the most recent development of a research presented in [1] and [2], in which the geometrical solutions of the hull have been obtained through an optimization process, made by using the CFD numerical methods. The most important result of this optimization was the wave resistance reduction, which arrived up to 20% of the total initial resistance. In this further process the hull catamaran model has been built and tested at the towing tanks of the Universities of Naples and Trieste. The results obtained in the numerical process have been compared with the experimental ones and the reliability of the numerical results will be proved. Then the numerical investigation has been extended further on, through a numerical process made by using the linear theories of the wave resistance and a general comparison between the results has been made

Published
2009

12. High Speed Trimarans. Validation of numerical Results by Geosim Tests

Author

BEGOVIC, ERMINA, BRUZZONE D., CASSELLA P., ZOTTI I., BERTORELLO, CARLO FRANCESCO MARIO, Zotti, Igor, C., Bertorello, D., Bruzzone, P., Cassella, E., Begovich, Begovic, Ermina, Bertorello, CARLO FRANCESCO MARIO, Bruzzone, D., Cassella, Pasquale, Zotti, I., and Cassella, P.

Abstract

Southampton ( U.K.)

Published
2001

25. Experimental and Numerical wave pattern analysis

Author

Balsamo, F., Bruzzone, Dario, Cassella, P., Scamardella, A., Zotti, I., F., Balsamo, D., Bruzzone, Cassella, Pasquale, A., Scamardella, and I., Zotti

Abstract

Proceedings of Third International Synmposium Conference on Hydrodynamics ottobre 1998- Seoul (Korea)

Published
1998

26. Trimaran Model Test Results and Comparison with Different High Speed Craft

Author

Dario Bruzzone, C. Bertorello, Igor Zotti, P. Cassella, Bertorello, C., Bruzzone, D. ., Cassella, Pasquale, and Zotti, I.

Subjects
Engineering, Total resistance, business.industry, Hull, Outrigger, Model test, Regular wave, Hydrodynamic resistance, Seakeeping, business, Trim, Marine engineering
Abstract

Publisher Summary This chapter summarizes the results of a research program on high speed trimarans, jointly performed at Genoa, Naples, and Trieste Universities. Two geosim models of a trimaran hull equivalent to high speed vessels operating in the bay of Naples were built. Resistance tests were carried out to assess the best trim and configuration regarding the hydrodynamic resistance. Resistance and wave pattern tests were carried out separately on the main hull, on the outrigger, and on the trimaran. Due to very slender hulls the wave resistance of the considered trimaran is a low percentage of the total resistance and the wave interference phenomenon is generally beneficial to the trimaran. Preliminary seakeeping tests in regular waves show very significant differences of heave and pitch motions of the trimaran with respect to those of its main hull. The reported data seem to indicate a significant beneficial effect of the outriggers on the seakeeping performances.

Published
2001

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