Author(s): M. L. Narasimham; V. Mallayachari
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Keywords: No Keywords
Abstract: The evaluation of wave forces and moments on a vertical cylindrical pile becomes very important since these are quite common members in the coastal and off shore structures. For an accurate and precise estimation of these forces and moments, the realistic prediction of wave kinematics is a critical stage which depends on the wave profile. In literature there exist several wave theories for obtaining the surface profile. Thus the magnitude of wave forces and moments varies depending on the theory used. It is customary to use either Airy's linear theory or Stokes higher order theories for the evaluation of hydrodynamic forces and moments, despite the fact that these theories have limited regions of applicability. The wave force tables prepared by R. G. Dean (1974) are to some extent found to be valid in a wider range of wave transformation. The Fourier approximation wave theory proposed by Rienecker and Fenton (1981) is reported to be valid for both deep and shallow waters, thus suggesting its usage for the evaluation of wave forces and moments. The present paper deals with the comparison of dimensionless wave forces and moments obtained using this theory and three other theories.
Year: 1991