0445120059 0445120231 Na kowa Rail Fuel Injector Mai jituwa ga Cummins SAA6d107e-1 Komatsu PC200-8

Cavitation mai ƙarfi a cikin injector dizal mai babban aiki - gwajin gwaji da CFD(part 4)

An kwaikwayi kwatankwacin shari'ar 1000Bar ta amfani da juzu'in sikeli iri ɗaya kamar yadda aka ƙididdige shi don Babban Sikeli Model. Don cavitation, an yi amfani da samfurin cakuda. Wannan yana ɗauka cewa duka ruwa da tururi suna tafiya a cikin kwararar multiphase iri ɗaya; ko da yake ba tare da iyakancewa ba, yana da inganci zato don cavitating kwarara. An tsara matakai guda biyu marasa daidaituwa, wanda ke da ma'ana a ƙananan matsa lamba da aka yi amfani da su a cikin babban sikelin samfurin.

Kwaikwayo na 1000Bar daidai matsi na allura ya ba da hali na wucin gadi wanda ya dace da sakamakon gwaji, kamar yadda aka nuna a cikin Hoto 3 tare da hotuna takwas na gwaji daga Hoto 2. Mitar ita ce 156Hz, yana ba da kyakkyawar dangantaka tare da ƙimar gwaji na 160Hz. Fina-finan duka gwajin gwaji da sakamakon CFD suna nuna kamanceceniya. Matsakaicin ƙimar Cd daga samfurin LES RNS matasan shine 0.71. Wannan yana ba da kyakkyawar yarjejeniya tare da ƙimar da aka auna akan Babban Sikeli Model. Waɗannan sakamakon suna ba da kwarin gwiwa ga ƙirar ƙira da ingantaccen inganci don haɗuwa da tashin hankali da samfuran CFD da yawa. An bayar da cikakkun bayanai a cikin [8].

Madaidaicin girman CFD Modeling

An gudanar da ƙirar CFD don shari'ar girman gaske kuma an samar da irin wannan bugun jini kusa da 150 kHz. Mitar da ake tsammanin daga lissafin ƙididdiga shine 160 kHz, wanda ya kara tabbatar da hanyar. 5. Tattaunawa An nuna hanyar da ta dace wacce ke ba da damar yin amfani da ƙirar LES CFD wajen haɓaka samfura. An kuma nuna wasu ingantaccen hanyar, wanda ba kowa bane ga LES CFD a wannan filin.