Since six generations Meyer Werft in Papenburg (Germany) is owned by  the Meyer family. Especially in building luxury cruise liners Meyer Werft  has gained worldwide reputation. Meyer Werft builds vessels in all size  classes. To guarantee maximum comfort and safety to the passengers of a cruise  liner, not only the sections of the ship, which are visible to the passengers,  but also the technical components and  machinery must be designed on highest  engineering level. One of the most important  section of the ship is the engine room. To  remove the enormous amount of thermal energy generated by the engines, heaters,  water treatment apparatus et cetera, many fans, pumps and huge air ducts are applied  for ventilation purposes. This ventilation system must not just provide a sufficient  cooling, but also has to generate a slight low pressure to prevent a release of smelly air  from the engine room.   The design of the ventilation system becomes even more complex, not only due to the  tasked mentioned above, but also due to the very limited space for technical components  in a modern cruise liner. The maximization of space for payload has always the highest  priority. For the latest cruise liner the performance of a new ventilation  concept should  be determined in a very early design stage. Therefore FlowMotion has been asked to  simulate the working of the entire ventilation system for the engine room.  To do so, a 3D model of all fans, air ducts and machines,  which release heat starting from the chimney to the  engine room has been designed. With the help of the  results of the flow-simulations, also called CFD (Compu-  tational Fluid Dynamics) calculations, the pressure,  velocity and tempera-ture distribution in the air ducts  and all rooms could be analysed.   The simulations showed, that the ventilation system  works as the engineers of Meyer Werft had planned and  the comfort and safety for the passengers can be  guaranteed. Offices: The Netherlands Leeghwaterstraat 21 2628 CA Delft Tel.: +31 15 278 2907 Germany Weenermoorer Str. 193 26826 Weener Tel.: +49 4953 922 969 Consultancy for Heat Transfer and Fluid Dynamics CFD makes fluid dynamics visible. ANSYS We solve every Flow problem. Keeping the engine room of a cruise ship cool Ventilation of the engine room of a large cruise ship Meyer Werft GmbH www.meyerwerft.de static pressure temperature