Diesel Injector Fuel Injector 0445120061 Bosch for Man TGA TGS TGX 10.5L D2066

Dynamic cavitation mukati meyakanyanya kuita dhiziri jekiseni - yekuyedza uye CFD kuongorora(chikamu 2)

MuCFD simulation, kugadzirisa zvimiro zvakakura zvine mhirizhonga uchishandisa Large Eddy Simulation (LES) yakavakirwa modhi inoratidza yenguva pfupi yekuenzanisira kubatsirwa pamusoro peRANS simulations [3] [4] [5]. Iyo yakakomba yakashata yeLES yakavakirwa CFD munzvimbo yeindasitiri ndiyo hombe komputa sosi inodiwa, yehurongwa hwemazana akati wandei akazvitsaurira cores. Pasina sosi yakadai, nguva yekumhanya yenyaya imwe chete inogona kutora mwedzi, zvichiita kuti kuferefetwa kwakakomba kusagoneke munguva inonzwisisika.

Zviitiko zvakakosha zvakaitwa mukati meCFD modelling iyo inoedza kusanganisa mabhenefiti eLES uye RNS turbulence modeling [6]. Aya modhi anowanzo kunzi mahybrid modhi uye anopa mukana wakakura weLES kuti ushandiswe mukati menzvimbo yeindasitiri.

Iyo yakasanganiswa LES-RANS CFD modhi, ichishandisa musanganiswa multi-phase nzira ye cavitation yakagadzirwa kutevedzera kuita kweiyo control orifice. Turbulence modelling uchishandisa yakasanganiswa LES-RANS nzira inobvumira kwakakosha computational kuwana pamusoro izere LES, kunyanya mune yakakwira Reynolds nhamba (Re) madziro-akaganhurwa kuyerera geometries mukati mejekitari redhiziri.

2. Basa Rokuedza

Mamodheru akajeka akagadzirwa e hydraulic control parts kubva mukati me dhiziri injector, kusanganisira yakakwira pressure control orifice, pakati petsono pamusoro uye vharafu yekudzora. Nekuda kwechiyero chidiki chemajekiseni chaiwo muenzaniso wakagadzirwa panguva ye40 chaiyo-saizi, sezvakaratidzwa mune zvakapfuura zvidzidzo kuti orifice flow performance inozvimiririra yakazvimirira pachiyero [1]. Ichi chakawedzera chiyero chakabvumira kurerukirwa kukuru kwekuona uchishandisa yakamhanya kamera, Vision Research Phantom V1210. Kamera yakadaro ine mwenje wakakodzera inotora ruzivo rwekuyerera kusingaonekwe neziso remunhu, uye inobvumira maitiro ehydraulic kuti atevedzerwe kuburikidza necavitation process.