0445120059 0445120231 Common Rail Fuel Injector Compatible for Cummins SAA6d107e-1 Komatsu PC200-8

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

Chovala chofanana cha 1000Bar chinafaniziridwa pogwiritsa ntchito kutsika kwamphamvu kofanana ndi kuwerengetsera kwa Large Scale Model. Kwa cavitation, chitsanzo chosakaniza chinagwiritsidwa ntchito. Izi zimaganiza kuti zonse zamadzimadzi ndi nthunzi zimayenda mosiyanasiyana mosiyanasiyana; ngakhale kuti alibe malire, ndi chomveka lingaliro kwa cavitating umayenda. Magawo awiri osasunthika amatsatiridwa, omwe ndi omveka pa madontho otsika otsika omwe amagwiritsidwa ntchito muzojambula zazikulu.

Kufananiza kwa 1000Bar yofanana ndi jekeseni ya jekeseni inapereka khalidwe lachidule lomwe likugwirizana ndi zotsatira zoyesera, monga momwe tawonetsera pa Chithunzi 3 ndi zithunzi zisanu ndi zitatu zoyesera kuchokera ku Chithunzi 2. Mafupipafupi ndi 156Hz, akupereka mgwirizano wabwino kwambiri ndi kuyesa kwa 160Hz. Makanema amayendedwe oyesera komanso zotsatira za CFD akuwonetsa kufanana kodabwitsa. Mtengo wapakati wa Cd kuchokera ku mtundu wosakanizidwa wa LES Rans ndi 0.71. Izi zimapereka mgwirizano wabwino kwambiri ndi mtengo woyesedwa pa Large Scale Model. Zotsatira izi zimapereka chidaliro pakupanga ndi kutsimikizira mwamphamvu kuphatikiza kwa chipwirikiti ndi mitundu yambiri ya CFD. Zambiri zaperekedwa mu [8].

Real-size CFD Modelling

Mtundu wa CFD udayendetsedwa pamlandu weniweni ndipo udatulutsa kugunda kofananako kufupi ndi 150 kHz. Mafupipafupi omwe akuyembekezeka kuchokera pakuwerengera makulitsidwe ndi 160 kHz, zomwe zimatsimikiziranso njirayo. 5. Zokambirana Njira yeniyeni yawonetsedwa yomwe imathandiza kugwiritsa ntchito chitsanzo cha LES CFD pakusintha kwazinthu. Kutsimikizika kwina kwa njirayi kwawonetsedwanso, zomwe sizodziwika kwa LES CFD m'munda uno.