Abstract
Abstract This paper is concerned with the prediction of the three-dimensional turbulent flows around bodies of irregular but basically cylindrical shape. Examples of such bodies are: ship or submarine hulls or an aircraft fuselage. The solution method described uses a non-orthogonal coordinate system in which the surface of the body is arranged to coincide with a coordinate surface. The velocity components solved for are the axial, radial and circumferential components of the cylindrical system from which the coordinates are derived. The equations are solved by the finite difference method of [1] for three-dimensional, parabolic flows. Turbulence is accounted for via a two-equation model of turbulence developed in [2] and modelled in [3]. Some preliminary solutions are presented for flow around the rear part of a ship's hull. The results seem to be qualitatively correct. However, no comparison with experimental data has yet been made. The present method can be easily extended to handle partially parabolic effects as described in [4].
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