Dizilo Injector Mafuta 0445120061 Bosch kwa Man TGA TGS TGX 10.5L D2066

Dynamic cavitation mkati mwa jekeseni wa dizilo wapamwamba kwambiri - kafukufuku woyesera ndi CFD(gawo 2)

Mu kayeseleledwe ka CFD, kuthetsa zomangira zazikulu za chipwirikiti pogwiritsa ntchito zitsanzo za Large Eddy Simulation (LES) zikuwonetsa kupindula kwakanthawi kachitidwe ka RNS [3] [4] [5].Kuipa kwakukulu kwa LES yochokera ku CFD m'mafakitale ndizomwe zimafunikira pakompyuta, mwa dongosolo la ma cores mazana angapo odzipereka.Popanda chithandizo choterocho, nthawi yoyendetsa mlandu umodzi ingatenge miyezi yambiri, zomwe zimapangitsa kufufuza kwakukulu kukhala kosatheka mu nthawi yomveka bwino.

Zosintha zazikulu zachitika mkati mwa CFD modelling yomwe imayesa kuphatikiza mapindu a LES ndi RNS chipwirikiti modelling [6].Mitundu iyi nthawi zambiri imatchedwa mitundu yosakanizidwa ndipo imapereka mwayi wochulukirapo kuti LES igwiritsidwe ntchito m'mafakitale.

A wosakanizidwa LES-RANS CFD chitsanzo, ntchito osakaniza Mipikisano gawo njira cavitation analengedwa kuti yesezera ntchito ya orifice ulamuliro.Mawonekedwe a chipwirikiti pogwiritsa ntchito njira yosakanizidwa ya LES-RANS amalola kupindula kwakukulu kopitilira LES yathunthu, makamaka pamapangidwe apamwamba a Reynolds (Re) oyenda pakhoma mkati mwa jekeseni wa dizilo.

2. Ntchito Yoyesera

Mitundu yowonekera idapangidwa ndi magawo owongolera ma hydraulic kuchokera mkati mwa jekeseni wa dizilo, kuphatikiza orifice yowongolera kuthamanga kwambiri, pakati pa singano pamwamba ndi valavu yowongolera.Chifukwa cha kuchepa kwa majekeseni enieni chitsanzocho chinapangidwa nthawi za 40 kukula kwake, monga momwe zasonyezedwera m'maphunziro apitalo kuti orifice flow performance ndi yodziyimira pawokha pamlingo [1].Kukula kumeneku kunapangitsa kuti kukhale kosavuta kuwonera pogwiritsa ntchito kamera yothamanga kwambiri, Vision Research Phantom V1210.Kamera yotere yokhala ndi kuyatsa koyenera imajambula tsatanetsatane wa kayendedwe kake kosawoneka ndi maso a munthu, ndipo imalola kuti machitidwe a hydraulic azitsatiridwa kudzera mu cavitation process.