/ 35 NOZZLE INTERFACE The flow conditions predicted at the nozzle orifice exit plane are recorded during the AVL FIRE® injector flow simulation and serve as input for AVL FIRE® in-cylinder mixture formation and combustion simulations. That way, a perfect correlation can be established between the flow conditions inside the nozzle and the conditions under which fuel enters the combustion chamber. This correaltion also takes into account the non-uniform flow out of the injector. EROSION MODELING Cavitation in injection nozzles often causes material erosion and is strongly related to the durability of injection components. Prediction of erosion probability helps to define the design parameters of the nozzle in order to decrease the flow aggressiveness in critical areas and assure the best possible break-up of the fuel discharged into the combustion chamber or into the port. Chesnel et al., ASME (2010) AVL FIRE® Application of LES together with the Volume-of-Fluid surface tracking method to capture spray propagation details Cavitation erosion probability averaged over an injection event on the surface of the spray hole Coupling of AVL BOOST HYDSIM and AVL FIRE® allowing for prediction of lateral needle forces and displacements
Solutionskatalog2016_EN
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