/ 35 NOZZLE INTERFACE The �� ow conditions predicted at the nozzle orifi ce e��it plane are recorded during the AVL FIRE™ injector �� ow simulation and serve as input for AVL FIRE™ in-cylinder mixture formation and combustion simulations. That way, a perfect correlation can be established ��etween the �� ow conditions inside the nozzle and the conditions under which fuel enters the combustion chamber. This correaltion also takes into account the non-uniform �� ow 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 pro��a��ility helps to defi ne the design parameters of the nozzle in order to decrease the �� ow 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
Solutionskatalog_2017_E
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