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

I-Dynamic cavitation ngaphakathi kwi-injector ye-diesel ephezulu yokusebenza - uvavanyo kunye nophando lweCFD(icandelo 2

Kwi-CFD yokulinganisa, ukusombulula izakhiwo ezinkulu eziphazamisayo usebenzisa i-Large Eddy Simulation (LES) esekelwe kwimifuziselo ibonisa inzuzo yokulinganisa okwexeshana ngaphezu kokulinganisa kwe-RANS [3] [4] [5].Ububi obumandundu be-LES esekwe kwi-CFD kwindawo yoshishino sisixhobo esikhulu sekhompyutha esifunekayo, ngokolandelelwano lwamakhulu aliqela anikezelweyo.Ngaphandle kwesixhobo esinjalo, ixesha lokuqhutywa kwetyala elinye linokuthatha iinyanga, nto leyo eyenza ukuba uphando olunzulu lungenzeki ngexesha elimiselweyo.

Uphuhliso olubalulekileyo lwenziwe ngaphakathi kwimodeli yeCFD ezama ukudibanisa iinzuzo zombini i-LES kunye ne-RANS turbulence modeling [6].Ezi modeli zihlala zibizwa ngokuba ziimodeli ezixubileyo kwaye zinika amandla amakhulu okuba iLES isetyenziswe kwindawo yeshishini.

Imodeli ye-hybrid ye-LES-RANS CFD, usebenzisa umxube we-multi-phase method for cavitation yadalwa ukulinganisa ukusebenza kwe-orifice yokulawula.Imodeli yesiphithiphithi kusetyenziswa indlela exutyiweyo ye-LES-RANS ivumela iinzuzo ezibalulekileyo zokubala ngaphezulu kwe-LES epheleleyo, ngakumbi kwinani eliphezulu le-Reynolds (Re) elinomda wejometri equkuqelayo eludongeni ngaphakathi kwesitofu sedizili.

2. Umsebenzi woMfuniselo

Iimodeli ezicacileyo zenziwe ngamacandelo olawulo lwe-hydraulic ukusuka ngaphakathi kwi-injector ye-diesel, kubandakanywa ne-orifice yokulawula uxinzelelo oluphezulu, phakathi kwenaliti ephezulu kunye nevalve yokulawula.Ngenxa yomlinganiselo omncinci wee-injection zangempela imodeli yenziwe ngamaxesha angama-40 okwenene, njengoko kuboniswe kwizifundo zangaphambili ukuba i-orifice flow performance ixhomekeke ngokufanelekileyo kwisikali [1].Esi sikali esonyukayo savumela ukuba kube lula ukubonwa usebenzisa ikhamera yesantya esiphezulu, iVision Research Phantom V1210.Ikhamera enjalo enokukhanya okufanelekileyo ibamba iinkcukacha zokuhamba okungabonakaliyo kwiliso lomntu, kwaye ivumela ukuziphatha kwe-hydraulic ukuba ilandelwe ngenkqubo ye-cavitation.