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

Cavitation mai ƙarfi a cikin injector dizal mai babban aiki - gwajin gwaji da CFD(part 2)

A cikin simintin CFD, warware manyan sikelin rikice-rikice ta amfani da manyan samfuran Eddy Simulation (LES) yana nuna fa'idar ƙirar ƙirar wucin gadi akan simintin RANS [3] [4] [5].Babban rashin lahani na tushen CFD na LES a cikin yanayin masana'antu shine babban kayan aikin kwamfuta da ake buƙata, na tsari na ɗaruruwan ƙididdiga masu yawa.Idan ba tare da irin wannan albarkatu ba, lokacin gudu don shari'a ɗaya na iya ɗaukar watanni, yana sa bincike mai tsanani ba zai yiwu ba a cikin madaidaicin lokaci.

An sami ci gaba mai mahimmanci a cikin ƙirar CFD waɗanda ke ƙoƙarin haɗa fa'idodin duka biyun LES da RANS ƙirar turbulence [6].Waɗannan samfuran galibi ana kiransu ƙirar haɗaɗɗiya kuma suna ba da babbar dama ga LES da za a yi amfani da su a cikin yanayin masana'antu.

Samfurin LES-RANS CFD mai haɗe-haɗe, ta amfani da hanyar cavitation mai nau'i-nau'i da yawa don cavitation an ƙirƙira shi don kwaikwayi aikin gaban bangon sarrafawa.Samfuran turbulence ta amfani da hanyar LES-RANS gauraye yana ba da damar samun gagarumar riba ta lissafin sama da cikakken LeS, musamman a cikin babban lambar Reynolds (Re) geometries mai iyaka da bango a cikin injin dizal.

2. Aikin Gwaji

An ƙirƙiri samfura masu ma'ana na sassan sarrafa na'ura mai aiki da ƙarfi daga cikin injector dizal, gami da babban matsi mai sarrafa matsi, tsakanin saman allura da bawul ɗin sarrafawa.Saboda ƙananan ma'auni na ainihin injectors an ƙirƙiri samfurin a cikin 40 sau na gaske, kamar yadda aka nuna a cikin binciken da ya gabata cewa aikin kwararar igiya yana da 'yanci daga ma'auni [1].Wannan haɓakar sikelin ya ba da damar mafi girman sauƙin gani ta amfani da kyamarar sauri mai sauri, Fahimtar Binciken Vision V1210.Irin wannan kyamara tare da hasken da ya dace yana ɗaukar cikakkun bayanai game da kwararar da ba a iya gani ga idon ɗan adam, kuma yana ba da damar bin diddigin halayen hydraulic ta hanyar cavitation.