2488244 I-Diesel Fuel Injector ye-Scania DC09/DC13/DC16 Izinjini

I-Dynamic cavitation ngaphakathi komjovo wedizili osebenza kakhulu - uphenyo lokuhlola kanye ne-CFD (ingxenye 4)

Ngamafuphi: 

I-imaging yesivinini esiphezulu se-cavitation ngaphakathi kwe-orifice yokulawula yembula umphumela we-pulsing hydraulic ongabonakali ezifundweni zangaphambilini.I-void cavitation enkulu idalwe eduze kodonga lwe-orifice futhi lapho isigaba se-conical sesifinyelelwe, ukugcwalisa emuva kwenzeka phezulu komfula eduze kwe-orifice.Lapho ukugcwaliswa kwangemuva kufinyelela ekungeneni kwe-orifice, kwakukhona uguquko lwesakhiwo sokugeleza, i-void cavitation enkulu eshintshiwe futhi inqubo iphindaphindiwe.

Ukumodela okuthuthukisiwe kwesiphithiphithi ekufanisweni kwe-CFD kukhiqize imiphumela enembe kakhulu kunamamodeli ajwayelekile uma kuqhathaniswa nemiphumela yokuhlola.

I-CFD ifanise i-void cavitation enkulu edonsayo eduze kwe-orifice kanye nomcimbi wokugcwalisa ngemuva.

Ukuvama kwalokhu kuziphatha emiphumeleni ye-CFD nakho kwavumelana nalokho kokuhlolwa.

I-CFD iveze ukuthi izinga lokugeleza lalibuye libe yi-pulsating, lixhunywe nokuziphatha kwe-cavitation okuchazwe ngenhla.Iqiniso lokuthi i-Cd emaphakathi ku-CFD yavumelana nalokho okukalwe ekuhlolweni kwanikeza isiqinisekiso sokuthi ukushaya kwesilinganiso sokugeleza kwe-CFD kwakunembile.

Ukusebenzisa ama-LSM kunikeze amandla ukuthuthukiswa kwamamodeli we-LES CFD ngesikhathi esilawulekayo.Lokhu konga isikhathi eside ekwakheni amamodeli wezingxenye zosayizi wangempela.

Endabeni yomjovo wangempela, imvamisa ye-pulsing cavitation yayiphezulu kakhulu ukuthi ingathonya ukusebenza kwenjini.Ukuqwashisa okwenzekayo okuhlinzekwe yilo msebenzi kuzovumela noma yimiphi imiphumela engase ibe mibi ukuba igwenywe emazingeni edizayini ezayo.

Izithenjwa
[1]C.Soteriou, M. Smith kanye noR. Andrews, "Cavitation hydraulic flip and atomization in direct injection diesel sprays," ku-IMechE C465/051/93, 1993.
[2]C.I-Soteriou, M. Smith kanye no-R. Andrews, "I-Diesel injection - laser light sheet illumination of the development of cavitation in orifices," ku-IMechE C529/018/98, 1998.
[3]B.Befrui, P. Spiekermann, MA Shost kanye no-M.-C.Lai, "VoF-LES Studies of GDi Multi-Hole Nozzle Plume Primary Breakup and Comparison with Imaging Data," ku-ILASS Europe Conference on Liquid Atomization and Spray Systems, Chania, Greece, 2013.
[4]RE Bensow, "Ukulingiswa kwe-cavitation engazinzile ku-Delft Twist11 foil kusetshenziswa i-RANS, DES ne-LES," ku-Second International Symposium on Marine Propulsors, Hamburg, Germany, 2011.
[5]C.U-Egerer, S. Hickel, S. Schmidt no-N. Adams, "Ukuhlaziywa kokugeleza kwe-turbulent cavitating kusiteshi esincane," ku-SHF Conference on Hydraulic Machines and Cavitation / Air in Water Pipes, Grenoble, France, 2013.
[6]ML Shur, PR Spalart, MK Strelets kanye ne-AK Travin, "Indlela eyingxube ye-RANS-LES enekhono lokulibaziseka le-DES kanye ne-LES eyenziwe ngodonga," ku-International Journal of Heat and Fluid Flow, 2008.
[7] C. Arcoumanis, JM Nouri kanye no-RJ Andrews, "Ukusetshenziswa Kwe-Refractive Index Matching to a Diesel Nozzle Internal Flow," ku-6th International Symposium mayelana Nezicelo Zezindlela Ze-Laser ku-Fluid Mechanics, 1992. [8] D. Bush, CCESoteriou , M. Winterbourn kanye no-C Daveau, "Ukuphenya ngezingxenye zokulawula ama-hydraulic kuma-injector asebenzayo" kuma-Fuel Systems for IC Engines, IMechE 2015.