2488244 Dizilo Injector ya Mafuta a Scania DC09/DC13/DC16 Injini

Dynamic cavitation mkati mwa jekeseni wa dizilo wapamwamba kwambiri - kafukufuku woyesera ndi CFD (gawo 4)

Mwachidule: 

Kuyerekeza kothamanga kwambiri kwa cavitation mkati mwa orifice yowongolera kunawulula pulsing hydraulic effect yomwe sinawonekere m'maphunziro am'mbuyomu. Large void cavitation idapangidwa pakhoma la orifice ndipo pomwe gawo la conical lidafikira, kubweza kunachitika kumtunda kwa mtsinje. Kubwerera kumbuyo kukafika pakhomo la orifice, panali kusintha kwa kayendedwe ka kayendedwe kake, kusinthidwa kwakukulu kwa void cavitation ndipo ndondomekoyi inabwerezedwa.

Mawonekedwe apamwamba a chipwirikiti muzoyerekeza za CFD adatulutsa zolondola kwambiri kuposa zitsanzo wamba poyerekeza ndi zotsatira zoyeserera. 

CFD inafanana ndi kugwedezeka kwakukulu kwa void cavitation pafupi ndi orifice ndi chochitika chodzaza kumbuyo. 

Kuchuluka kwa khalidweli pa zotsatira za CFD kumagwirizananso ndi zomwe zayesera. 

CFD idawulula kuti kuthamanga kwa magazi kunalinso kuthamanga, kulumikizidwa ndi khalidwe la cavitation lomwe tafotokozazi. Mfundo yakuti Cd wamba mu CFD idagwirizana ndi zomwe zidayesedwa pakuyesa zidapereka chidaliro kuti kugunda kwa CFD kunali kolondola. 

Kugwiritsa ntchito ma LSM kunapangitsa kuti mitundu ya LES CFD ipangidwe munthawi yoyenera. Izi zinapulumutsa nthawi yochuluka popanga zitsanzo za zigawo zenizeni zenizeni. 

Pankhani ya jekeseni weniweni, mafupipafupi a pulsing cavitation anali okwera kwambiri kuti asakhudze ntchito ya injini. Kudziwitsa za zochitika zomwe zaperekedwa ndi ntchitoyi zidzathandiza kuti zotsatira zomwe zingakhale zovuta zipewedwe m'mapangidwe amtsogolo.

Maumboni
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