Numerical and experimental study of appendages in racing yachts and their influence on the free surface

• Autores: Jorge Izquierdo Yerón
• Directores de la Tesis: Ricardo Zamora Rodríguez (dir. tes.)
• Lectura: En la Universidad Politécnica de Madrid ( España ) en 2016
• Idioma: inglés
• Tribunal Calificador de la Tesis: Luis Pérez Rojas (presid.), Francisco Pérez Arribas (secret.), Amadeo García Gómez (voc.), Benjamin Lehugeur (voc.), Jesús Valle Cabezas (voc.)
• Materias:
  • Ciencias tecnológicas
    • Tecnología naval
      • Arquitectura naval
• Enlaces
  • Tesis en acceso abierto en: Archivo Digital UPM
• Resumen

  • The performances of a racing sailboat are estimated by means of the speed prediction programs (VPP), which include the ship stability characteristics and the aero and hydrodynamic models. For this reason, it is important to have an adequate evaluation of the forces in appendices and its variation in different sailing conditions, heel and leeway Moreover, for the analysis of the forces in the appendices, it is important to know their hydrodynamic characteristics when they work together in a fluid field strongly modified by the canoe body. For this reason, several tests have been done in the ETSIN towing tank with the aim to validate numeric codes that allowing faster analysis and they permit to focus on the different phenomena that occur there. Such tests have been done in a way that the hydrodynamic forces in each appendage could be measured independently allowing assessing the distribution of forces in different sailing conditions to be able to deepen the interactions between the canoe body, the keel and the rudder. Numerical techniques allow capturing details that can hardly be displayed in experimental tests. In this sense, the latest techniques used in the recent workshops have been reviewed and the study has been focused to propose a new model with the aim to show a new faster methodology which serves the industry for this type of approach to the problem.