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RESEARCH PAPERS: Offshore Mechanics

Second-Order Radiation Condition of Scattering Wave and Its Application

[+] Author and Article Information
J. Li

Department of Civil Engineering, Dalian Institute of Technology, Dalian, People’s Republic of China

H. Huang

Physical Oceanography Division, Institute of Marine Environmental Protection, State Oceanic Administration, Dalian, People’s Republic of China

J. Offshore Mech. Arct. Eng 112(3), 177-180 (Aug 01, 1990) (4 pages) doi:10.1115/1.2919853 History: Received April 04, 1989

Abstract

The first and second-order radiation conditions for scattering waves in two and three-dimensional problems have been derived by virtue of a sequence of linear differential operators. The wave forces on a large circular cylinder are computed by using finite element methods with first and second-order radiation conditions and the Sommerfeld condition, respectively. The results show that an improvement in accuracy is achieved by employing the second-order radiation condition. The interior region in which finite elements are employed can be restricted to a much smaller one, compared with that using the Sommerfeld condition and the computing efforts and required storage in the computer are reduced.

Copyright © 1990 by The American Society of Mechanical Engineers
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