Ensayos experimentales para la obtención del coeficiente hidráulico como un factor relevante en el desarrollo del proyecto de un buque

12th International Conference on Project Engineering[Resumen]En este artículo se presenta un estudio experimental del comportamiento de un modelo sujeto a la inundación progresiva de sus compartimentos. El estudio consta de varios ensayos mediante los que se inunda uno o varios compartimientos utilizando aberturas circulares, y de otras formas, con diferentes dimensiones. En cada ensayo se mide en el dominio del tiempo el calado y los ángulos de escora y cabeceo. Teniendo en cuenta estos movimientos se estima la cantidad de agua y caudal en el interior del compartimiento. Estos datos sirven para obtener el coeficiente hidráulico asociado a las aberturas del modelo. Estos coeficientes pueden ser utilizados posteriormente para calibrar programas de cálculo de la inundación progresiva en los buques. ------ [abstract] In this paper an experimental study appears about the behavior of a model subject to the progressive flood of its compartments. The study consists of several tests by means of which one or more compartments are flooded using circular openings, and of other forms, with different dimensions. In every test the domain of the time the draw and the angles of roll and pitch are measured. Bearing these movements in mind the volume and water quantity is estimated inside the compartment. This information serves to obtain the hydraulic coefficient associated with the openings of the model. These coefficients can be used later to calibrate programs of calculation to the progressive flooding in the ships

Diseño de un sistema de propulsion ondulante

Selected Proceedings from the 13th International Congress on Project Engineering. (Badajoz, July 2009)[Abstract] Throughout history the practical implementation of propulsion mechanisms in the fluid environment based on the rotation has been easier to deal because of the state of the art in its time, and this has meant that it has not been more interest a further development of wave based mechanisms which are most of those seen in nature. The Research Group Innovacións Mariñas, attached to the Ship Building Department. (University of A Coruña) is currently developing a wave propeller prototype (based on a invention whose antecedent can be found in invention patent nr. 200002012, author Primitivo B. Gonzalez), applicable to systems and bodies located in fluid environment, and based on the way chosen by first living organisms to move. We are currently finishing the construction of a prototype for trials in a testing tank, whose virtual model has been developed with SOLID EDGE V.18 and its components calculated with the help of finite element module that incorporates this software. Simulation of the propeller performance has been done through software FLUENT 6.3Xunta de Galicia; PGIDIT06DPI172PR