Safety and comfort
Safety and comfort simulations include aerodynamics analysis and its improvement, explosion simulations for exhaust pipes of gas engines and other hazardous spaces as well as fire simulations in inner spaces and superstructures.
Aerodynamics analysis
There are various examples where simulations are useful when studying aerodynamics of the ship superstructures.
Conditions at the passenger decks should in all circumstances be pleasant. Using simulations comfortable and safe conditions on superstructures can be ensured. Dispersion analysis shows, how exhaust gas spreads in different wind conditions; if exhaust gas ends up into the passenger areas, required changes can eastly be designed.
Wind load coefficients of the hull can be determined, and if ship has a helicopter shipboard, its operation can be secured.
Safety zone for LNG bunkering
Safety zone at bunkering situation can be determined based on CFD simulations for any LNG ship and port used for bunkering. Situations can cover ship to ship or truck to ship bunkering.
Wind conditions and different release scenarios can be detected in full scale in trustworthy way. Study is reported so that it fulfills the demands of the classification societies.
Exhaust gas pipe rupture disc analysis
Analysis for rupture discs of exhaust gas pipes can be performed for gas engines. Simulation initiates in the turbocharger outlet flange and extends all the way to the exhaust pipe outlet. Blackout conditions prevail, if none of the cylinders is firing with continuing gas supply. If one of the cylinders is not firing, it is misfire: partial blackout with continuing gas supply from 1/8 of the engine. In either case rupture disc is positioned as in the initial design. Silencer is assumed as open, porous structure.
Combustion is standard methane combustion, reactions active only in part of the equipment. Settings such as mass flow rate, temperature and lambda are defined based on the engine type.
Rupture Disc Placement Evaluation (PDF) »
Ventilation and fire
These simulations are performed in inner spaces in order to optimize the ventilation for maximum energy efficiency. Simulations are also a very powerful tool when ensuring smoke extraction in fires, Also heat load analysis can be performed. Typical objects are such as car decks, corridors in cabin decks and engine rooms.
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