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CFD Analysis for High-Speed Catamaran

NOVEMBER 18, 2021

DLBA is excited to announce a collaboration with Blue Gulf Cat (UAE) on the hydrodynamic design of a 42’ (13m) high-speed catamaran. With a design top speed exceeding 65kts, speed is king on this platform leading to the use of multiple transverse steps on each demi hull to reduce resistance at the highest operating speeds. DLBA was tasked with reviewing the hydrodynamic efficiency of the preliminary hull geometry and Blue Gulf Cat’s CFD simulations.

DLBA Image: Hull developed by Blue Gulf Cat in concert with DLBA

 

With a stepped hull, properly balancing vessel safety with performance is critical. The most efficient stepped hulls are generally those that operate close to the threshold of dynamic instability. With the safety of the platform in mind, DLBA has recommended some changes to the details of the step arrangement on Blue Gulf Cat’s proposed hull form. With our expertise, we identified and recommended some changes to the CFD practices which are expected to improve the accuracy of the CFD simulations. We are excited to continue collaborating with Blue Gulf Cat and seeing if our recommendations produce the desired results!

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