A numerical method for non linear analysis of the dynamics of marine systems under gravity waves and current.

• Grant number: 12/06681-7
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: December 01, 2012
• End date: November 30, 2015
• Field of knowledge: Engineering - Naval and Oceanic Engineering - Hydrodynamics of Ships and Ocean Systems
• Principal Investigator: Alexandre Nicolaos Simos
• Grantee: Felipe Ruggeri
• Host Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

This proposal is related to theoretical and numerical hydrodynamic research applied to offshore strucutres, which will be placed in the Numerical Offshore Tank (TPN-USP), that can provide all the support required to the research. The theme proposed has already been developed in a time domain linear bidimensional approach by Eng. Felipe Ruggeri in his master program. The extension to tridimensional problems is a theme developed by other student (FAPESP PROCESS 2010/08778-2) under the supervision of prof. Dr. Alexandre Nicolaos Simos and has already provided validated results. The numerical scheme adopted until now used low order approximation and it is being proposal the extension to higher order approximations concerning the numerical scheme and evaluation of non linearities and current effects concerning the physical problem. The motivation of this research is directly related to the laboratory, which has a time domain offshore simulator and nowadays need to transpose the results from frequency (obtained using a commercial software) to time domain, that solves only the linear and weakly non-linear hydrodynamic problem. There are problems such as monobuoys, multibodies simulation concerning large relative displacements and wave/current interaction which the strong non linearities can be very important and they are not considered properly nowadays in the simulator.

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

WATAI, R. A.; DINOI, P.; RUGGERI, F.; SOUTO-IGLESIAS, A.; SIMOS, A. N.. Rankine time-domain method with application to side-by-side gap flow modeling. APPLIED OCEAN RESEARCH, v. 50, p. 69-90, MAR 2015. (10/08778-2, 12/06681-7)

RUGGERI, FELIPE; WATAI, RAFAEL A.; SIMOS, ALEXANDRE N.; ASME. A 3D HIGHER ORDER TIME DOMAIN RANKINE PANEL METHOD FOR WAVE-CURRENT INTERACTION. PROCEEDINGS OF THE ASME 35TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING , 2016, VOL 7, v. N/A, p. 10-pg., 2016-01-01. (12/06681-7, 10/08778-2)

WATAI, R. A.; RUGGERI, F.; SIMOS, A. N.. A new time domain Rankine panel method for simulations involving multiple bodies with large relative displacements. APPLIED OCEAN RESEARCH, v. 59, p. 93-114, SEP 2016. (10/08778-2, 12/06681-7)

RUGGERI, FELIPE; WATAI, RAFAEL A.; SAMPAIO, CLAUDIO M. P.; SIMOS, ALEXANDRE N.. On the development of a higher order time-domain Rankine panel method for linear and weakly non-linear seakeeping computations. Journal of the Brazilian Society of Mechanical Sciences and Engineering, v. 40, n. 2, FEB 2018. (10/08778-2, 12/06681-7)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

RUGGERI, Felipe. A higher order time domain panel method for linear and weakly non linear seakeeping problems.. 2016. Doctoral Thesis - Universidade de São Paulo (USP). Escola Politécnica (EP/BC) São Paulo.