David de Prémorel, CEO of finot-conq

Cavitation prediction in high performance sailing, a review of the needs and means of a yacht designer

Competitive sailing today heavily relies on the use of hydrofoils to increase the speed of yachts, both inshore (America's cup for example) and offshore (Vendee Globe's IMOCA monohulls or Ultim Trimarans). These lifting appendages allow to reduce or completely eliminate the drag of the hull(s), but they come with a full set of design challenges. In particular, their size is limited by class rules or by the laws of mechanics, and therefore they often operate at their hydrodynamic and mechanical limits. When trying to optimize foils and to predict the performance of a yacht, the naval architect therefore needs to precisely capture the complete behavior of the foils including fluid-structure interaction, cavitation and ventilation. Several low and high fidelity approaches are currently available, which will be presented with their advantages, drawbacks and limitations. A special focus will be made on the need for simplified cavitation approaches in RANSE CFD-based yacht performance prediction in order to make them suitable for widespread industrial applications.

David de Prémorel

After graduating in mechanical and aerospace engineering, and a first career in the aerospace and software industries, David fulfilled his childhood dream by joining famous naval architects finot-conq 23 years ago. He has since been in charge of fluid dynamics, structural design and computer sciences. He started the development of a RANSE CFD-based sailing yacht performance prediction tool, which is currently carried on by a PhD student. He has been appointed CEO of finot-conq 4 years ago.

Published on June 24, 2024 Updated on June 24, 2024