0445120059 0445120231 I-Common Rail Fuel Injector Ihambelana neCummins SAA6d107e-1 Komatsu PC200-8

I-Dynamic cavitation ngaphakathi kwi-injector ye-diesel ephezulu yokusebenza - uvavanyo kunye nophando lweCFD(icandelo 4)

Ityala elilinganayo le-1000Bar liye lalinganiswa kusetyenziswa ukuhla koxinzelelo lwesikali esifanayo njengoko kubalwe kwiModeli eNkulu yesikali.Kwi-cavitation, kusetyenziswe imodeli yomxube.Oku kuthatha ukuba zombini ulwelo kunye nomphunga zihamba nge-homogeneous multiphase flow;nangona kungekho ngaphandle kwemida, yingcinga esebenzayo yokuhamba kwe-cavitating.Izigaba ezibini ezingenakunyanzeliswa zenziwe imodeli, enengqiqo kuxinzelelo oluphantsi loxinzelelo olusetyenziswe kwimodeli enkulu.

Ukulinganisa kwe-1000Bar yoxinzelelo lwenaliti elinganayo wanika ukuziphatha okwexeshana okuhambelana neziphumo zovavanyo, njengoko kubonisiwe kuMfanekiso 3 kunye nemifanekiso yovavanyo esibhozo evela kuMfanekiso 2. I-frequency yi-156Hz, inika ulungelelwaniso olubalaseleyo kunye nexabiso lokulinga le-160Hz.Iimuvi zazo zombini ukuhamba kovavanyo kunye neziphumo zeCFD zibonisa ukufana okumangalisayo.Umyinge wexabiso le-Cd ukusuka kwimodeli ye-hybrid LES Rans yi-0.71.Oku kunika imvumelwano egqwesileyo kunye nexabiso elilinganiswe kwiModeli yeSikali esikhulu.Ezi ziphumo zinika ukuzithemba kwimodeli kunye nokuqinisekiswa olomeleleyo kwindibaniselwano yesiphithiphithi kunye neemodeli ze-CFD ezininzi.Iinkcukacha ezipheleleyo zinikwe kwi- [8].

Ubungakanani bokwenyani be-CFD Modeling

Imodeli ye-CFD yaqhutyelwa ubungakanani bokwenyani kwaye yavelisa i-pulsation efanayo kufutshane ne-150 kHz.I-frequency elindelekileyo kwizibalo zokulinganisa yi-160 kHz, eqinisekisa ngakumbi indlela.5. Ingxoxo Indlela eyinyani iye yaboniswa eyenza ukuba kusetyenziswe i-LES CFD modeling kuphuculo lwemveliso.Okunye ukuqinisekiswa kwendlela kuye kwaboniswa, okungaqhelekanga kwi-LES CFD kule ndawo.