Umuyoboro mushya wa gari ya moshi isanzwe Nozzle L246pbc kubitera lisansi

Ubushakashatsi ku Ingaruka zaInzoka Kwimuka kwa Diesel Moteri Injeneri Kubiranga Injection Ibiranga buri mwobo (igice2)

Ibyingenzi byubushakashatsi bikubiye mu mpapuro ni ibi bikurikira:

. Sisitemu yo kwipimisha irashobora kwegeranya igipimo cya lisansi ako kanya ya buri mwobo watewe inshinge nyinshi icyarimwe, kandi ikamenya ikusanyirizo ryigihe cyo gutera inshuro nyinshi. Isesengura nukuri kwizerwa rya sisitemu yikizamini irasesengurwa.

(2) Ukurikije isoko ifunguye isomero rya C ++ isomero rya OpenFOAM? platform, hashingiwe kuri rhoCentralFoam solver kugirango igabanuke transonic transonic, code yo gukemura gazi-yamazi ya compressible gaz-ibice bibiri byimbere muri nozzle yarakozwe kandi iraterwa. Umuti ukoresha moderi ya homogeneous flow kugirango ikemure ibitoro byinshi bya peteroli muri nozzle kandi ikemure ibyiciro bibiri byinzibacyuho binyuze mukigereranyo cyiza cya leta. Kuva RNGk isanzwe-ε Icyitegererezo cy’imivurungano ntabwo gisobanutse neza kugirango gikemure umuvuduko ukabije, cyane cyane ibintu bya cavitation mu karere k’umuvuduko muke, icyitegererezo cy’imivurungano gisubirwamo hifashishijwe imikorere yubucucike bujyanye na cavitation aho kuba ubucucike buhoraho. Byongeye kandi, mugihe gikemura ibingana na Euler kumazi yoroha, mubisanzwe hariho ibisubizo bidahagarara, aribyo ikibazo cya Riemann, kubera imibare ikomeye ya hyperbolic mibare iranga ibingana.

Muri iyi mpapuro, hafi ya Riemann solver ikoreshwa mugutunganya umubare wumubare wa mesh kugirango ufate igisubizo kidahagarara, ni ukuvuga impanuka yibintu byamazi ya compressible fluid. Icyitegererezo gikoreshwa mu gusesengura ingaruka zaInzoka kugenda kuri cavity itemba imbere ya nozzle yinshinge ebyiri, kandi moderi ya CFD yashyizweho igenzurwa hakoreshejwe amategeko yapimwe ya lisansi yapimwe kuri buri mwobo. Ibisubizo byigero byerekana ko icyitegererezo gishobora gufata neza imiterere ya cavitation na turbulence quasi-ikurikiranye igenda ikura mugihe gito muri nozzle, kandi iterambere rya cavitation yumwobo wo hejuru wa nozzle rirakabije kurenza iryobo ryo hepfo.