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On the truncation of spectra

Article type: Research Article

Authors: Bishop, R.E.D. | Price, W.G.

Affiliations: Department of Mechanical Engineering, University College London, England

Abstract: A rational method of truncating a Pierson and Moskowitz wave spectrum ϕξξ(ω) of wave elevation is explained. The fourth order moment of the spectrum, m4=∫0∞ω4ϕξξ(ω)dω is rendered finite and its value is given, once the cut-off frequency has been selected. The implications of the theory as regards bandwidth parameter are examined and the particular features of the ITTC and ISSC formulations are discussed.

DOI: 10.3233/ISP-1978-2528101

Journal: International Shipbuilding Progress, vol. 25, no. 281, pp. 3-6, 1978

Published: 1 January 1978
Price: EUR 27.50
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