April 2006
Table of Contents:

Greek Section

Pacific Northwest Section

Greek Section
by Nikos Dionissopoulos

March 16, 2006

On March 16, 2006, the SNAME Greek Section held its fifth technical meeting for this fiscal year, in the presence of about 60 members and non-members, of which most were students. The meeting was a joint venture with the Laboratory for Ship and Marine Hydrodynamics of the National Technical University of Athens, during which Professor Fred Stern,, Research Engineer of Iowa Institute of Hydraulic Research (IIHR) - Hydroscience and Engineering at the University of Iowa (USA), presented his paper on the topic “Progress on Development of Simulation-Based Design For Ship Hydrodynamics.”

Simulation-based design (SBD) for ship hydrodynamics merges traditional fields of resistance and propulsion, seakeeping, and maneuvering, in which inclusion of environmental effects will revolutionize the design process and offer possibilities for innovative out-of-the-box concepts for future ships to meet the challenges of the 21st century. Development of SBD involves a new paradigm for hydrodynamics research in which Computational Fluid Dynamics (CFD), Experimental Fluid Dynamics (EFD) and Uncertainty Analysis (UA) are conducted simultaneously for benchmark geometries and conditions using an integrated approach along with optimization methods, of which all serve as the internal engine guaranteeing simulation fidelity.

The speaker described the current research at IIHR in major components of SBD for ship hydrodynamics by providing an overview of the status of its application to traditional fields and future directions, followed by the prognosis for realization of practical applications. The speaker emphasized the fact that the evolution of CFD will remarkably extend the capabilities of the testing facilities (EFD), taking into account the scaling effects apparent in the testing of scaled models. Furthermore, the ever-increasing computing speed and power will minimize the execution time leading to reasonable computing time for the large number of CFD runs necessary in the design process.

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Pacific Northwest Section
by Jon Markestad

March 16, 2006

SNAME Pacific Northwest Section held a joint meeting with ASNE on March 16th at Ivar’s on the Seattle waterfront. The overall attendance was 30-40 people, of which 17 were SNAME Members.

The content in the presentation was a great learning source about the US Coast Guard icebreaker fleet, in particular the USS HEALY.

Captain Daniel K. Oliver, from the U.S. Coast Guard, gave an interesting presentation on the HEALY’s design and last year’s tour of duty, which included many wonderful pictures to illustrate the topic.
Last year the vessel spent a few months in northern Alaska doing research for NOAA and NSF then traversed the Artic. The traverse was in conjunction with the Swedish icebreaker ODEN, and included a stop at the North Pole. The traverse ended in Scotland where the research crew left the ship. The trip back to Seattle was by way of the Caribbean and the Panama Canal.

We would like to thank Capitan Oliver for taking the time to talk to us and we wish him the best on his next assignment.

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