DNV GL announced the completion of the LNGreen joint industry project to develop a state-of-the-art next-generation LNG carrier. The LNGreen joint industry project brought together experts from DNV GL and industry specialists from GTT, Hyundai Heavy Industries (HHI) and shipowner GasLog. Each of the project partners contributed their unique know-how and experience, to develop next-generation LNG carrier using the latest technology, within the bounds of existing shipbuilding methods.
LNGreen investigated the improvement of efficiency and performance of LNG carriers by considering actual operational conditions and optimisation in terms of hydrodynamics, machinery and system configuration. These developments were based on DNV GL’s integrated systems engineering approach COSSMOS, state-of-the-art computational fluid dynamics calculations (CFD), and a containment system design, tailored to a specific operational profile and anticipated trades.
The total efficiency was assessed using an integrated systems approach. DNV GL COSSMOS assessed the integrated machinery system under realistic operating conditions as experienced by GasLog. HHI and DNV GL carried out the hydrodynamic performance evaluation by comparing CFD simulations. Cargo containment optimisation was investigated by GTT and HHI. The tank shape, necessary reinforcements and boil off rate calculations, were examined to develop alternative cargo tank designs that could yield additional cargo capacity.