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Cavitation A Ciki Babban-Matsi Na gani Fassarar Fuel Injector Nozzles (PART 2)

An yi amfani da nozzles masu iya gani (OA) a cikin binciken da yawa da suka gabata na kwararar ciki na injector nozzle geometries da aka samu a cikin injunan matsawa-inji kai tsaye. Yawancin waɗannan karatun da suka gabata an yi su ne a matsi na allura da ƙasa fiye da na injector ɗin masana'antu masu alaƙa, saboda ƙalubalen ƙira mai allurar OA wanda zai iya jure matsi mai ƙarfi. Don ramawa, wasu sun yi amfani da ma'auni masu girman gaske don daidaita lambar Reynolds.

Za a taƙaita binciken da ya yi ƙoƙari ya kai ga matsananciyar allura a nan, tun da waɗannan su ne mafi dacewa ga ƙirar da aka gabatar a cikin wannan takarda, kuma a ƙarshe sun fi dacewa idan ya zo ga sake haifar da kwararar sha'awa.

Arcoumanis et al. yayi nazarin tasirin ƙwanƙwasa geometries yayin da ya dace da Reynolds da lambobin Cavitation a cikin girman gaske da haɓakar lissafi [2]. Sun gano cewa tsarin cavitation ya bambanta a cikin geometries guda biyu a lambobin cavitation iri ɗaya. Duk ma'auni na lissafi biyu sun nuna cavitation na geometric a gefen ƙasa na gefen saman bangon (tare da injector mai nuni zuwa ƙasa), da cavitation na kirtani da ke a kishiyar ramin gindin.

Babban bambamcin da marubutan suka lura an danganta shi da bambancin lokacin zama na kumfa a cikin kwararar sabili da tsayin daka. Babban sikelin injector an yi shi da gilashin acrylic, yayin da ainihin ma'aunin injector an yi shi da sandar ma'adini da aka makala a jikin injector na gama-gari na Bosch kuma an kewaye shi da hoton tallan acrylic. Yankin acrylic ya fi girma fiye da bututun ƙarfe na injector na asali. Reid et al. yayi amfani da sapphire don ƙirƙirar sassauƙan juzu'i na lissafin da aka samo a cikin injectors-cloded-orifice (VCO) [3]. Sun sami matsi na allura na mashaya 2000 tare da zane. Da alama an gina bangon ne ta hanyar shimfida faranti na sapphire a cikin axial direction tare da jerin ramuka waɗanda suka haifar da jigo na ƙarshe. Wannan wata hanya ce mai wayo don sauƙaƙe sarrafa sassan.