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Propulsion design From propeller analysis to integrated propeller-aft body design


In the year 2030, the French Naval Architect Monique Lorand was tasked to optimise a preliminary ship design in only 24 hours - a task deemed impossible some 15 years before. The reason that she showed no signs of stress while doing this was that she had great confidence in a toolbox of software with state-of-the-art CRS tools and optimisation techniques. She and her staff had learned how to use these tools within CRS projects and dedicated workshops. In fact, the resulting high quality, integrated design was considered one of the main reasons for the success of her shipyard.


CRS propeller design developments in a nutshell The development of Monique’s toolbox had started long before 2030, on a cold and dark December afternoon in 2002 in Wageningen, where some 15 men of different origin had gathered around a projector and screen, discussing a proposed sequel to the PIF working group. The PIF project officially ended that day and yielded three different ways to provide inflow fields for propeller analysis. This discussion appeared to be the perfect breeding ground for a propeller analysis tool, designated PROCAL, for which a three-year project was approved the next day at the AGM.


Tom van Terwisga, Johan Bosschers & Joost Moulijn


t.v.terwisga@marin.nl 20 report


The PROCAL group started working on a baseline panel code, including a first version of a cavitation model. After three years, further developments and validation appeared necessary (PROCAL-2), resulting in a mature tool for the analysis of open propellers. In 2009, the PROCAL development continued as a side track in PROPDEV and PROPLOADS, realising,


Development of propulsor related tools and applications


amongst other achievements, the coupling of PROCAL to RANS methods. Further developments addressed ducted propellers (PRODUCT-1,2) and the application of


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