Contributions to the modeling of internal axial-flow induced vibrations in pipes conveying fluid

• Grant number: 22/12546-7
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate (Direct)
• Start date: May 01, 2023
• End date: April 30, 2024
• Field of knowledge: Engineering - Naval and Oceanic Engineering - Hydrodynamics of Ships and Ocean Systems
• Principal Investigator: Guilherme Rosa Franzini
• Grantee: Vitor Schwenck Franco Maciel
• Supervisor: Mojtaba Kheiri
• Host Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Institution abroad: Concordia University, Canada
• Associated to the scholarship: 21/04434-1 - Passive suppression of internal axial-flow-induced vibrations of a cantilevered pipe discharging fluid using non-linear vibration absorber: a numerical, analytical and experimental study, BP.DD

Abstract

The phenomenon of internal axial-flow induced vibrations in pipes conveying fluid is one of several ways in which fluid-structure interactions manifest themselves. These vibrations may occur in many engineering applications such as production risers in offshore applications, ocean mining procedures, industrial heat exchangers and in in-flight refueling scenarios. Due to its wide array of applications and rich dynamical behavior, modeling the dynamics of pipes conveying fluid has attracted a lot of interest in the past several decades. It is clear from the literature that the published models have become more complex over the years, and recently, more focus has been put on the three-dimensional non-linear dynamics of these systems. The main focus of the proposed research is to contribute to the ever growing literature by developing a three-dimensional, geometrically non-linear mathematical model for the dynamics of an extensible pipe conveying fluid. In the model, the torsional dynamics will also be considered, as well as improvements to include a wide array of practical applications. These improvements include modeling support imperfections, lumped mass additions, immersion in still fluid, and the inclusion of structural damping in the mathematical model. With this improved model, the effects of the axial extensibility and torsional dynamics on the three-dimensional non-linear dynamics of the pipe will be analyzed using tools from both linear and non-linear dynamical theories. Then, the effects of the aforementioned improvements on the overall dynamics of the system will be examined as functions of the system parameters. This research will be conducted at Concordia University, Montréal under the supervision of Prof. Mojtaba Kheiri, a recognized expert on the topic. (AU)

Scientific publications

(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)

FRANZINI, GUILHERME ROSA; MACIEL, VITOR SCHWENCK FRANCO; VERNIZZI, GUILHERME JORGE; ZULLI, DANIELE. Simultaneous passive suppression and energy harvesting from galloping using a bistable piezoelectric nonlinear energy sink. NONLINEAR DYNAMICS, v. N/A, p. 22-pg., 2023-09-21. (21/04434-1, 22/12546-7, 22/00770-0, 22/02995-9)