Durida Shidaalka Naaftada 0445110466 0445110717 0445110794 Bosch ee Gawaarida Jianghuai

Jilidda weyn ee Eddy ee duritaanka naaftada oo ku furmaya qaab laba weji oo cavitation ah(qaybta 1)

Abstract.

Waraaqda hadda jirta, natiijooyinka tilmaanta ee jilitaanka socodka inta lagu jiro marxaladda furitaanka ee duritaanka Diesel ayaa la soo bandhigay. Si loo qabto goobta qulqulka kakan iyo qaab dhismeedka cavitation ee ka samaysan mudeeyaha, Simulation Large Eddy ayaa la adeegsaday, halka cadaadiska dareeraha lagu daray. Iyadoo la tixgelinayo saamaynta cavitation-ka, nooc isku dhafan oo laba waji ah ayaa la adeegsaday.

Heerka wareejinta tirada badan ee qaabka isku dhafka ah ayaa la hagaajiyay si loo xaddido inta ugu badan ee suurtogalka ah ee dhacdooyinka cadaadiska xun. Inta lagu jiro jilitaanka, cadaadiska ugu sarreeya ayaa laga helay aagagga uumiga burburay, oo leh cabbir ka sarreeya 4000bar, taas oo ka sarreysa walaaca soo-saarka alaabta caadiga ah. Meelaha ugu sarreeya cadaadiska noocan oo kale ah waxay si fiican ula siman yihiin goobta dhabta ah ee nabaad guurka sida laga helay raajada.

1. Hordhac

Nidaamyada duritaanka naaftada ayaa door aasaasi ah ka ciyaara matoorada gubashada gudaha tan iyo markii ay saameeyaan samaynta buufinta shidaalka, atomization iyo gubashada, qiiqa la sameeyay iyo waxtarka matoorka. Xawaaraha jet-ka ee la sameeyay waa isku xigxiga 500m/s, oo leh cadaadis kor u kaca oo ku dhow 2000bar. Isbeddellada hadda jira waxay muujinayaan cadaadiska cirbadeynta oo xitaa kor u kaca ilaa 3000bar, si loo daboolo sharciyada mustaqbalka EU ee qiiqa. Si kastaba ha ahaatee, heerarka cadaadiska sare ayaa sababa xawli aad u sarreeya iyada oo loo marayo marinnada cidhiidhiga ah ee durida Diesel iyo dardargelinta xoogga leh ee isbeddelka jihada fiiqan (geesaha, roodhida iwm.), taas oo u horseedda cadaadiska maxalli ah oo hoos u dhacaya cadaadiska saturation oo keena cavitation.

Intaa waxaa dheer, cavitation waxay u horseedi kartaa dhaawac nabaad-guurka cavitation iyo hoos u dhac halis ah oo ku yimaada waxqabadka cirbadeynta, xitaa masiibada cirbadaha musiibada ah, taas oo dhaawici karta mishiinka, haddii caarada cirbaduhu go'do. Waxaa jiray dadaallo badan oo loogu talagalay saadaasha nabaad-guurka injector Diesel, tusaale ahaan shaqada Koukouvinis et al. [1]