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Mphamvu ya m'mimba mwake ya nozzle, kuthamanga kwa jakisoni ndi kutentha kozungulira pamayendedwe opopera mu injini ya dizilo (Gawo 1)

1. Mawu Oyamba

Mafuta omwe amabadwira m'chipindacho ndi ofunikira ku injini ya dizilo chifukwa imakhudza magwiridwe antchito ndi umuna. Pa kuyaka, kutsitsi ndi chabe kuyambitsa madzi mu mpweya chilengedwe kudzera nozzle kotero kuti madzi, mwa mogwirizana ndi mpweya wozungulira ndi kusakhazikika kwake, amasweka-m'malovu [1]. Makhalidwe opopera amadziwika kuti amakhudza kwambiri kuyaka ndi kutulutsa mpweya mu injini za dizilo. Mwa kukhathamiritsa mawonekedwe opopera, mpweya waiwisi wochokera ku injini ya dizilo womwe makamaka NOx ndi PM ukhoza kuchepetsedwa [2-4]. Kufufuza mu makhalidwe opopera dizilo anaikira kwambiri pa zotsatira za kutsitsi khalidwe pa injini ntchito monga kutsitsi nsonga malowedwe, yopuma-mmwamba kutalika ndi droplet kukula ndi liwiro magawidwe [5]. Kuthamanga kwa jekeseni kumakhudza kwambiri kulowetsedwa kwamadzimadzi [6] ]. Kulowetsedwa kwa nsonga yopopera kumawonjezeka pamene mphamvu ya jakisoni imakwera. Chotsatirachi chikugwirizana ndi kuchuluka kwachulukidwe komanso kuthamanga kwamphamvu kwa madontho pamitsempha yayikulu ya jakisoni [7]. Molingana ndi kuthamanga kwa jekeseni, kutsitsi kumalowa mwachangu pazovuta za jekeseni [8]. The yopuma-mmwamba kutalika amakhala mfundo ya discontinuity, kumene kutsitsi kusintha kwa zone ya madzi (zochuluka zamadzimadzi, kapena interconnected mitsempha ndi m'malovu), kuti finely atomized boma la m'malovu [9]. Pambuyo kupasuka kwa madzi ndime akutuluka pa nozzle, ndi kwaiye m'malovu akhoza zina kusweka-m'zing'onozing'ono pamene iwo kusuntha mu mpweya wozungulira [10]. Kukula kwa mapindikidwe awa kumabweretsa kusweka kukhala madontho ang'onoang'ono.

Mphamvu zomwe zimagwirizanitsidwa ndi kupanikizika kwamphamvu, kugwedezeka kwapamwamba ndi kukhuthala kumayang'anira kuphulika kwa dontho [11-12]. Komabe, CFD ndi chida chonyengerera chomwe chimagwiritsidwa ntchito kulosera gawo lofunikira lomwe silingachitike poyesera. Mu kafukufukuyu, mawonekedwe a dizilo opopera amafufuzidwa molunjika pakusintha kutentha kozungulira, kuthamanga kwa jakisoni ndi mainchesi osiyanasiyana a nozzle pogwiritsa ntchito Computational Fluid Dynamics. Kuyerekeza uku kumatha kujambula m'mimba mwake, kulowetsedwa kwa utsi komanso kutalika kwapang'onopang'ono.