Preferential cavitation and friction-induced heating of multi-component Diesel fuel surrogates up to 450MPa

• Analysis of formation and development cavitation a multicomponent Diesel fuel surrogate discharging from high-pressure injector. Two approaches have been followed: (i) barotropic evolution (ii) the inclusion wall friction-induced pressurisation thermal effects. The preferential components within injector's hole is predicted by Vapour-Liquid Equilibrium calculations. Results indicate significant increase temperature with increasing pressures due to heating, an in vapour pressure Found unprecedented decrease volume inside injector injection pressure, attributed found orifice. present work investigates operating range 60MPa 450MPa. compressible form Navier-Stokes equations numerically solved density-based solver employing homogeneous mixture model for accounting presence liquid phases, while turbulence resolved using Large Eddy Simulation approximation. Simulations are performed on tapered heavy-duty engine at nominal fully-open needle valve lift 350 ? m. To account effect extreme pressurisation, two density as function where effects not considered solving energy conservation equation. PC-SAFT equation state utilised derive thermodynamic property tables eight-component based grade no.2 emissions-certification temperature, fraction. Moreover, calculations; lighter cavitate greater extent than heavier ones. leading mean mass cavitating, but same time pressure. This has shift drop feed back orifice discharges; increases, so does orifice, confining location smaller attached upper part thus restricting growth.