Ojulowo Tuntun Titun Rail Injector Nozzle L246pbc fun Abẹrẹ epo
awọn ọja apejuwe awọn
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Ti a lo ninu Awọn ọkọ ayọkẹlẹ / Awọn ẹrọ
koodu ọja | L246pbc |
Awoṣe ẹrọ | / |
Ohun elo | / |
MOQ | 6 pcs / Idunadura |
Iṣakojọpọ | Apoti apoti funfun tabi ibeere alabara |
Atilẹyin ọja | osu 6 |
Akoko asiwaju | 7-15 ṣiṣẹ ọjọ lẹhin ibere ibere |
Isanwo | T/T, PAYPAL, bi o ṣe fẹ |
Ọna Ifijiṣẹ | DHL, TNT, UPS, FedEx, EMS tabi Beere |
FAQ
Iwadi lori Ipa tiAbẹrẹ abẹrẹ Gbigbe ti Diesel Engine Injector lori awọn abuda abẹrẹ ti kọọkan Iho (apakan 2)
Awọn akoonu iwadi akọkọ ti iwe jẹ bi atẹle:
(1) Da lori ofin ti itoju ti ipa ati Bernoulli ká Theorem, a igbeyewo eto fun awọn tionkojalo idana abẹrẹ abuda ti kọọkan iho da lori sokiri ipa ọna igbeyewo opo ti a še ati itumọ ti. Eto idanwo naa le gba oṣuwọn abẹrẹ idana lẹsẹkẹsẹ ti iho kọọkan ti injector pupọ-iho ni akoko kanna, ki o mọ ikojọpọ ọmọ ti awọn akoko abẹrẹ epo pupọ. Awọn išedede ati igbẹkẹle ti eto idanwo ni a ṣe atupale.
(2) Da lori ìmọ orisun C ++ ìkàwé kilasi OpenFOAM? Syeed, lori ipilẹ ti rhoCentralFoam solver fun compressible transonic sisan, awọn koodu fun lohun compressible gaasi-omi meji-alakoso sisan ninu awọn nozzle ti a ni idagbasoke ati riri. Olumulo naa nlo awoṣe ṣiṣan isokan lati yanju ṣiṣan idana multiphase ni nozzle ati yanju iyipada ipele ipele-meji nipasẹ idogba titẹ rere ti ipinle. Niwon boṣewa RNGk-ε Awoṣe rudurudu ko ni deede to lati yanju ṣiṣan compressible, paapaa lasan cavitation ni agbegbe titẹ kekere, awoṣe rudurudu jẹ atunyẹwo nipasẹ iṣafihan iṣẹ iwuwo ti o ni ibatan si ipo cavitation dipo iwuwo igbagbogbo. Ni afikun, nigba ti o ba yanju awọn idogba Euler fun awọn ṣiṣan ti o rọpọ, nigbagbogbo awọn ojutu dawọ duro, eyun iṣoro Riemann, nitori awọn abuda mathematiki hyperbolic ti o lagbara ti awọn idogba.
Ninu iwe yii, olutayo Riemann isunmọ kan ni a lo lati ṣe ilana ṣiṣan nọmba ti apapo lati mu ojuutu ti o dawọ duro, iyẹn ni, iyalẹnu igbi mọnamọna ti ito compressible. Awọn awoṣe ti lo lati itupalẹ awọn ipa ti awọnAbẹrẹ abẹrẹ iṣipopada lori ṣiṣan iho inu nozzle ti abẹrẹ iho meji, ati awoṣe CFD ti iṣeto ti jẹri nipasẹ lilo awọn ofin abẹrẹ idana ti iwọn ti iho kọọkan. Awọn kikopa esi fihan wipe awọn awoṣe le parí Yaworan awọn cavitation ati rudurudu kioto-tẹle eto ti o ndagba lorekore ninu awọn nozzle, ati awọn cavitation idagbasoke ti oke nozzle iho jẹ diẹ àìdá ju ti isalẹ nozzle iho.