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The journal International Shipbuilding Progress (ISP) was founded in 1954. Each year four issues appear (in April, July, September and December). Publications submitted to ISP should describe scientific work of high international standards, advancing subjects related to the field of Marine Technology, such as:
The contents may be of a pure scientific or of an applied scientific nature.
Authors: Beukelman, W.
Article Type: Research Article
Abstract: The coefficients of the pitch- and heave equations have been experimentally determined for the model of the Davidson A-destroyer with a bulbous bow. Moreover the wave-forces and -moments on the restrained model have been measured in different head waves. These measurements are compared with the results of computations based on two modes of strip theory and on a ‘rational’ strip theory for slender bodies. The motions have been calculated with both the computed- and experimentally determined coefficients, forces and moments and are compared with each other. A comparison for one speed has also been made with the measured motions …of the Naval Ship Research and Development Center (NSRDC) and the measurements of Breslin and Eng. Show more
Citation: International Shipbuilding Progress, vol. 17, no. 192, pp. 235-252, 1970
Authors: Meyerhoff, W. Kay
Article Type: Research Article
Abstract: The linearized theory of normal-symmetric wedge impact on a water surface developed by v. Karman and by Wagner is used to determine the forces acting during the impact of water wedges upon wedge-shaped rigid walls. The linearized conditions are applied also to the cases of larger dead-rise angles. The potential flow in the water wedge during the impact is found by conformal mapping according to the method of Schwarz and Christoffel and is obtained in form of an infinite series. From this the added mass, the wetting correction, and an expression for the pressure distribution are derived. Numerical results for …the added-mass coefficient and for the wetting correction, calculated on a computer, are presented in diagrams. For the limiting case of wedge impact on an initially flat water surface, the results are in agreement with previously published results of the linearized theory, which reasonably agree with the results of non-linear investigations for larger dead-rise angles. For the other limiting case of water-wedge impact upon a plane wall, forces are compared with published results from approximate non-linear investigations. Reasonable agreement was found only with the results given by Cumberbatch, but not with those by Borisova, Koriavov, and Moiseev. Show more
Citation: International Shipbuilding Progress, vol. 17, no. 192, pp. 253-264, 1970
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