Proceedings of the
Sixth International Conference on Numerical Ship Hydrodynamics

edited by
V.C.Patel and F.Stern

Sponsored jointly by:

Naval Studies Board of the U.S. National Research Council

Iowa Institute of Hydraulic Research

David Taylor Research Center

Office of Naval Research

NATIONAL ACADEMY PRESS
Washington, D.C.
1994



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Proceedings of the Sixth International Conference on Numerical Ship Hydrodynamics Proceedings of the Sixth International Conference on Numerical Ship Hydrodynamics edited by V.C.Patel and F.Stern Sponsored jointly by: Naval Studies Board of the U.S. National Research Council Iowa Institute of Hydraulic Research David Taylor Research Center Office of Naval Research NATIONAL ACADEMY PRESS Washington, D.C. 1994

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Proceedings of the Sixth International Conference on Numerical Ship Hydrodynamics The National Research Council serves as an independent advisor to the federal government on scientific and technical questions of national importance. Established in 1916 under the congressional charter of the private, nonprofit National Academy of Sciences, the Research Council brings the resources of the entire scientific and technical community to bear on national problems through its volunteer advisory committees. Today the Research Council stands as the principal operating agency of both the National Academy of Sciences and the National Academy of Engineering and is administered jointly by the two academies and the Institute of Medicine. The National Academy of Engineering and the Institute of Medicine were established in 1964 and 1970, respectively, under the charter of the National Academy of Sciences. The National Research Council has numerous operating units. One of these is the Naval Studies Board, which is charged with conducting and reporting on surveys and studies in the fields of scientific research and development applicable to the operation and function of the Navy. A portion of the work done to prepare this document was performed under Department of Navy Contract N00014-87-C-0018 issued by the Office of Naval Research under contract authority NR 201-124. However, the content does not necessarily reflect the position or the policy of the Department of the Navy or the government, and no official endorsement should be inferred. The United States Government has at least a royalty-free, nonexclusive, and irrevocable license throughout the world for government purposes to publish, translate, reproduce, deliver, perform, and dispose of all or any of this work, and to authorize others so to do. Printed in the United States of America

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Proceedings of the Sixth International Conference on Numerical Ship Hydrodynamics SPONSORS The Executive Committee of the Sixth International Conference on Numerical Ship Hydrodynamics extends its thanks to those organizations whose financial contributions made this conference possible. Because of their generous contributions, copies of the Proceedings will be distributed to all member organizations of the International Conference on Numerical Ship Hydrodynamics. Naval Studies Board of the U.S. National Research Council Iowa Institute of Hydraulic Research David Taylor Research Center Office of Naval Research

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Proceedings of the Sixth International Conference on Numerical Ship Hydrodynamics PREFACE The Sixth International Conference on Numerical Ship Hydrodynamics was held in Iowa City on August 2–5, 1993. The conference was hosted by the Iowa Institute of Hydraulic Research and cosponsored by the Institute in collaboration with the David Taylor Research Center, the Office of Naval Research, and the Naval Studies Board of the National Research Council. In keeping with the tradition of the previous conferences, the papers covered a wide range of topics and numerical methods. Numerical ship hydrodynamics is developing at least as rapidly as the parent field of computational fluid dynamics, and on some topics it is pioneering new approaches. Such is the case, for example, in the study of the complex flow physics associated with the free surface and related phenomena. The papers presented at the conference report advances made not only at the fundamental level but also in the application of numerical methods to certain aspects of ship design. Having the conference in Iowa City provided an opportunity for the research community to celebrate the accomplishments of a distinguished colleague, Professor Louis Landweber. His many contributions to the field of ship hydrodynamics, through research, education, and service, are highlighted in the accompanying biographical sketch. The conference attracted many of his past students and associates to join the celebration. The conference was judged a great success by all measures, both technical and social. Organization of such an event demands the time and effort of many individuals. Members of the three conference committees deserve thanks for their effort. In addition, appreciation should be extended to the University of Iowa Center for Conferences and Institutes and to the students and staff of the Institute of Hydraulic Research, who made the arrangements before, during, and after the conference. Special thanks go to Twila Meder and Judy Holland for their help throughout the conference and in timely production of this proceedings volume. V.C.Patel Co-Chair

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Proceedings of the Sixth International Conference on Numerical Ship Hydrodynamics ORGANIZING COMMITTEE Co-Chairs Francis L.Noblesse David Taylor Research Center, USA V.C.Patel Iowa Institute of Hydraulic Research The University of Iowa, USA Members Robert Ettema Iowa Institute of Hydraulic Research The University of Iowa, USA Edwin P.Rood Office of Naval Research, USA Fred Stern Iowa Institute of Hydraulic Research The University of Iowa, USA LOCAL COMMITTEE Chair Fred Stern Conference Administrator Marlene Janssen Members Wu Joan Kim Fotis Sotiropoulos Ramkumar N.Parthasarathy Yusuke Tahara Daohua Zhang PAPERS COMMITTEE Chair Justin H.McCarthy Members Robert F.Beck H.J.Lugt George F.Carrier J.Nicholas Newman James A.Fein Francis L.Noblesse Henry J.Haussling V.C.Patel Fred Stern

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Proceedings of the Sixth International Conference on Numerical Ship Hydrodynamics

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Proceedings of the Sixth International Conference on Numerical Ship Hydrodynamics

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Proceedings of the Sixth International Conference on Numerical Ship Hydrodynamics DEDICATION Louis Landweber was born on January 8, 1912, in New York City. He attended public schools there and received his B.S. degree in mathematics from City College of New York, where he was elected to Phi Beta Kappa. Upon graduation in 1932, he was awarded the Ward Medal for Physics and the Belden Prize for Mathematics and Physics, and he accepted a position as Junior Physicist at the U.S. Experimental Model Basin at the Washington Navy Yard (which became David Taylor Naval Ship Research and Development Center (NSRDC)). He found the subject of his work fascinating and challenging and, though he was a mathematician, he realized that the field required mathematics he had not yet studied. He began work toward his master's degree by attending evening classes at George Washington University. He received a master's degree in physics in 1935. In 1940, Dr. Landweber became head of a small research group when the NSRDC (now David Taylor Model Basin (DTMB)) opened at Carderock, Maryland. This group distinguished itself in vital war-related research, primarily in mine-sweeping problems, which led to his receiving the Navy's Meritorious Civilian Service Award in 1947. Shortly after World War II, his research group was expanded to become the Hydrodynamics Division. During the years at Carderock, Dr. Landweber completed work on his Ph.D. in physics at the University of Maryland and began teaching some courses for the University at the center. In 1954, he accepted a position at the University of Iowa, where he was Professor in the Department of Mechanics and Hydraulics and Research Engineer in the Iowa Institute of Hydraulic Research. He continued full-time teaching and research, concentrating his efforts in Ship Hydrodynamics, until his retirement in 1982; but he continues to advise students working on new problems. During his distinguished career, Dr. Landweber has received many awards and citations, the most notable of which include being appointed the David Taylor Lecturer at DTMB and being awarded the Davidson Medal for Ship-Research Accomplishments by the Society of Naval Architects, both in 1978; being honored by a special session at the Third Engineering Mechanics Division Specialty Conference of the American Society of Civil Engineers in 1979; and being named Weinblum Memorial Lecturer for 1981. He was named Fellow both of the Society of Naval Architects and Marine Engineers and the American Academy of Mechanics, and he was elected, in 1980, to the National Academy of Engineering. He has supervised over 50 M.S. and Ph.D. students and has been author, co-author, or editor of approximately 150 technical papers, reports, monographs, and books. Dr. Landweber's superb research and teaching skills have been enhanced and made even more effective by his very genuine personal qualities. He has been mentor and friend to three generations of students and research associates, all of whom have been influenced by his deep integrity, his warmth and caring, and his wonderful humor. It is indeed appropriate that the Sixth International Conference on Numerical Ship Hydrodynamics was held in his honor and that these Proceedings are dedicated to him.

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