b'Engineer Innovation | MarineDF combustion, gas mode 5 CA b TDC 20 CA a TDCFigure 5: More than 660 Gas and 1200 Diesel combustion CFD simulations have been carried out to find an optimum combustion chamber and injector configuration and ideal engine operating conditionsFigure 6: CFD simulation of the prechamber, one of the critical components for the gas powered engineand CFD analysis. Simcenter STAR- Lars Ola comments, Our use of CFD CCM+s power licensing scheme meansmeant we knew a lot better what to the teams are not limited in their use ofexpect before we started the engine in parallel cores, allowing them to meetthe lab and allowed us to use our their varying simulation needs. Thetesting capacity in a much smarter power licensing was a quantum leapway.forward in capability for us, as it allowed us to ride the wave of hardwareThis way of working, with the usecapacity improvement. We can use ourof simulation through ideation, computing resources to their maximumconcept and detailed design stages, capacity and run full engine cyclemeant that the final engine has simulations in just one day. exceeded the planned performance targets from the very first version. Final design testing Instead of a prototype stage lasting Wrtsils use of CFD from early in theseveral years, with subsequent release design process not only improved thestages to fix later problems, the design but also reduced the amount ofWrtsil 31 has already been optimized engine rig testing required.and rigorously tested via virtual validation. Looking back on the As a big bore engine can burn severalchanges in the development process tonnes of heavy fuel per hour, reducingover the years, Lars Ola comments that the physical testing saves both time andIt is the way of working that is the real energy, as well as reducing costs. Asrevolution. We are using the tools 8'