Influência da discretização de espectros de onda na repostade movimento de plataformas flutuantes offshore

Abstract

With the advancement of oil companies in exploration and production in ever deeper waters, there is a grwing need for new technologies, especially in the development of platforms, mooring systems and risers for these conditions. At the same time, numerical simulators have been incorporating new mathematical formulations validated with experimental tests to represent in a more realistic way the behavior of these systems,always looking for a balance between precision and computacional cost. In this context, this work presents through parametric studies the influence of discretization procedures of sea spectrum in design of mooring lines and risers; More specifically, in the first and second order motion response of floating production units and in the response of the stresses of the anchor lines and risers. The parameters studied involve the number of wave components as well as different ypes of spectrum discretization.