Prediction of Ship Structural Response When Operating in Extreme Seas

Date: 
Friday, March 9, 2018 - 2:30pm
Location: 
3110 Etcheverry Hall
Speaker: 
Associate Professor Kevin Maki

Department of Naval Architecture and Marine Engineering

University of Michigan, Ann Arbor

About: 

E-201 Ocean Engineering Seminar Series, Spring 2018

 

2:00 - 2:30pm Beverages & Refreshments

2:30 - 4:00pm Seminar

 

Ships operating in the sea experience routine loading due to the interaction with ambient waves, and intermittent loading due to encounters with large waves that lead to slamming-type events. The focus of this talk is the development of numerical algorithms that are suitable for the prediction of the loads on a ship that encounters extreme loads due to both slamming and wave bending. Specifically, a two-way coupled fluid-structure algorithm is presented that combines a fully nonlinear viscous hydrodynamics solver with a linear dynamic finite element solver. The algorithm includes a generalized mapping capability to exchange information between the fluids and structures domains. The fluid solver is based on the OpenFOAM open source library, and has the capability to generate a wide range of sea conditions. The structural solver utilizes a modal decomposition of the structure to exploit modal truncation and which provides valuable computational savings. The talk will include validation examples that range for canonical problems to real ships operating in extreme seas.

Biography: 

Kevin Maki is an Associate Professor in the Department of Naval Architecture and Marine Engineering (NA&ME) at the University of Michigan, Ann Arbor. He received his Ph.D. from the NA&ME Department in 2006, and earned two MSE degrees in Aerospace Engineering (2004) and NA&ME (2002). His research areas are in numerical free-surface hydrodynamics, hydroelasticity, and renewable energy related to the marine environment. He was a Summer Faculty Fellow in 2007 and 2009 at the Naval Surface Warfare Center Carderock Division, supported by the Office of Naval Research. He has been a Visiting Professor at the Italian Ship Model Basin. He has worked as an independent consultant in marine engineering on projects related to high-performance naval vessels, hydrokinetic energy extraction, and high-performance sailing-yacht design. His research is sponsored by the Office of Naval Research, Ford Motor Company, NAVSEA, and the American Bureau of Shipping. He teaches courses on numerical hydrodynamics and the design of sailing yachts and high-speed craft. He is an Associate Member of SNAME.

 

Hosted by: Asst. Prof. S.A. Mäkiharju, 6179 Etcheverry Hall (makiharju@berkeley.edu)