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 kwaikwaiyon CFD, warware manyan sikelin rikice-rikice ta amfani da manyan samfuran Eddy Simulation (LES) suna nuna fa'idar ƙirar ƙirar wucin gadi akan simintin RANS [3] [4] [5]. Babban rashin lahani na tushen CFD na LES a cikin mahallin masana'antu shine babbar hanyar sarrafa kwamfuta da ake buƙata, na tsari na ɗaruruwan kwatancen kwatance. Idan ba tare da irin wannan albarkatun ba, lokacin gudu don shari'a ɗaya na iya ɗaukar watanni, yana sa bincike mai tsanani ba zai yiwu ba a cikin lokaci mai ma'ana.

An sami ci gaba mai mahimmanci a cikin ƙirar CFD waɗanda ke ƙoƙarin haɗa fa'idodin tsarin ƙirar tashin hankali na LES da RANS [6]. Waɗannan samfuran galibi ana kiran su 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 juzu'i ta amfani da hanyar LES-RANS masu gauraya suna 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 ruwa 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 ingantacciyar '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.