2488244 Diesel Fuel Injector yeScania DC09/DC13/DC16 Injini

Dynamic cavitation mukati meyakanyanya kuita dhiziri jekiseni - yekuyedza uye CFD kuferefeta (chikamu 4)

Muchidimbu: 

High speed imaging ye cavitation mukati mekutonga orifice yakaratidza pulsing hydraulic effect isina kuonekwa mune zvidzidzo zvekare. Yakakura void cavitation yakagadzirwa padivi pemadziro orifice uye kana chikamu checonical chasvikwa, kudzoreredza kwakaitika kumusoro kwerwizi. Kana iyo yekudzosera yasvika pamusuwo weorifice, pakanga paine kuyerera chimiro shanduko, hombe void cavitation yakagadziridzwa uye maitiro akadzokororwa.

Yepamberi turbulence modelling muCFD simulations yakaburitsa mibairo yakanyatso kurongeka kupfuura yakajairwa modhi kana ichienzaniswa nemhedzisiro yekuedza. 

Iyo CFD yakaenzana nekupuruzira hombe void cavitation padivi pe orifice uye yekumashure-yekuzadza chiitiko. 

Kuwanda kwemaitiro aya pamigumisiro yeCFD yakabvumiranawo neiyo yekuedza. 

Iyo CFD yakaratidza kuti chiyero chekuyerera chaive zvakare kupuruzira, chakabatana necavitation maitiro anotsanangurwa pamusoro. Chokwadi chekuti avhareji Cd muCFD yakabvumirana neyakayerwa mukuyedza yakapa chivimbo chekuti CFD kuyerera kweyero yekupuruzira yaive yakarurama. 

Kushandisa LSMs kwakagonesa kuvandudzwa kweLES CFD modhi mune inogoneka nguva-yakatarisana. Izvi zvakachengetedza nguva yakawanda mukugadzira mamodheru ezvikamu zvesaizi chaiyo. 

Munyaya yeinjector chaiyo, kuwanda kweiyo pulsing cavitation yaive yakakwira zvakanyanya kuti isapesvedze kuita kweinjini. Kuziva kwechiitiko chinopiwa nebasa iri kuchaita kuti chero zvingangove zvakashata zvidzivirirwe mumatanho ekugadzira ramangwana.

References
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