BMT Nigel Gee Present the Benefits of CFD
BMT Nigel Gee were pleased to be a guest speaker at the Numeca and AC&E FINE™/ Marine seminar held at the Royal Southampton Yacht Club, on the 22nd of March. BMT presented the ‘Application of CFD in the Design Spiral’ alongside KER Yacht Design and Numeca to a room of industry professionals.
NUMECA is recognised today as the most innovative company in the field of Computational Fluid Dynamics (CFD) and multiphysics design, analysis and optimisation. FINE™/Marine is an integrated CFD software environment for the simulation of mono-fluid and multi-fluid flows around any kind of vessel.
BMT apply in-house CFD from the earliest design stage. Preliminary CFD is used for resistance estimates and visualisation of the flow regime in various areas such as increasing confidence in well-known empirical methods or filling the gaps between scaled model test results and other methods. Moreover, the application of CFD in preliminary design stages has proved to be a highly effective tool to support the early development of specialist vessels, such as low wash designs, where factors such as wake wash need to be quantified.
During an evaluation study of Numeca Fine/Marine, experimental results for a high performing BMT designed hull form were compared with CFD results both at model and full scale. The differences found between CFD and the model test were in the range of 5%.
Matteo Magherini, Naval Architect at BMT Nigel Gee discussed during his presentation, “Nowadays CFD projects have become noticeably shorter, more reliable and cheaper than they were, enabling CFD to be a readily available and cost effective tool in the Naval Architect skill box. BMT’s approach has always been to apply a careful blend of computational methods such as CFD alongside traditional techniques such as model testing to ensure absolute reliability and insight into the hydrodynamics at play”.
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