2488244 Diesel Fuel Injector no nā ʻenekini Scania DC09/DC13/DC16

ʻO ka hoʻoheheʻe ʻana i loko o kahi injector diesel hana kiʻekiʻe - kahi hoʻokolohua hoʻokolohua a me ka hoʻokolokolo CFD （mahele 4）

I ka hōʻuluʻulu manaʻo: 

ʻO ke kiʻi kiʻi kiʻekiʻe o ka cavitation i loko o kahi puka mana i hōʻike ʻia kahi hopena hydraulic pulsing ʻaʻole i ʻike ʻia ma nā haʻawina mua. Ua hoʻokumu ʻia ka lua hakahaka nui ma ka paia orifice a i ka manawa i hiki ai ka ʻāpana conical, ua hoʻihoʻi ʻia i uka o ka puka. I ka hiki ʻana o ka hoʻihoʻi ʻana i ka puka orifice, aia kahi hoʻololi o ka hoʻololi ʻana, ua hoʻoponopono hou ʻia ka cavitation nui a ua hana hou ke kaʻina hana.

ʻO ka hoʻohālike ʻana i ka turbulence kiʻekiʻe i nā hoʻohālikelike CFD i hoʻopuka i nā hopena i ʻoi aku ka pololei ma mua o nā hiʻohiʻona maʻamau ke hoʻohālikelike ʻia me nā hopena hoʻokolohua. 

Ua kūlike ka CFD me ka puʻu nui ʻana o ka lua ʻole ma ka puka a me ka hanana hoʻopiha hope. 

Ua ʻae pū ka pinepine o kēia ʻano ma nā hopena CFD me kēlā o ka hoʻokolohua. 

Ua hōʻike ʻia ka CFD i ka puʻupuʻu pū ʻana o ka kahe kahe, pili pū me ka hana cavitation i wehewehe ʻia ma luna. ʻO ka ʻoiaʻiʻo o ka Cd awelika i ka CFD i ʻae ʻia me ka mea i ana ʻia i ka hoʻokolohua hāʻawi i ka hilinaʻi i ka pololei o ka CFD flow rate pulsation. 

Ma ka hoʻohana ʻana i nā LSM i hiki ai ke hoʻomohala ʻana i nā hiʻohiʻona LES CFD i kahi manawa hoʻokele. Ua mālama kēia i ka manawa nui i ka hoʻomohala ʻana i nā kumu hoʻohālike no nā ʻāpana nui maoli. 

I ka hihia o ka injector maoli, ua kiʻekiʻe loa ke alapine o ka cavitation pulsing e hoʻoikaika i ka hana ʻenekini. ʻO ka ʻike o ka hanana i hāʻawi ʻia e kēia hana e hiki ai ke pale ʻia nā hopena maikaʻi ʻole i nā pae hoʻolālā e hiki mai ana.

Nā kuhikuhi
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[2]C. Soteriou, M. Smith a me R. Andrews, "Diesel injection - laser kukui pepa illumination o ka ulu ana o cavitation i orifices," ma IMechE C529/018/98, 1998.
[3]B. Befrui, P. Spiekermann, MA Shost a me M.-C. Lai, "VoF-LES Studies of GDi Multi-Hole Nozzle Plume Primary Breakup and Comparison with Imaging Data," ma ILASS Europe Conference on Liquid Atomization and Spray Systems, Chania, Greece, 2013.
[4] RE Bensow, "Ka hoʻohālikelike ʻana o ka cavitation paʻa ʻole ma ka pahu Delft Twist11 me ka hoʻohana ʻana iā RANS, DES a me LES," ma ka Second International Symposium on Marine Propulsors, Hamburg, Kelemānia, 2011.
[5]C. Egerer, S. Hickel, S. Schmidt a me N. Adams, "Analysis of turbulent cavitating flow in a micro channel," ma SHF Conference on Hydraulic Machines and Cavitation / Air in Water Pipes, Grenoble, Farani, 2013.
[6] ML Shur, PR Spalart, MK Strelets a me AK Travin, "He hoʻokokoke RANS-LES hybrid me ka hiki ke hoʻopaneʻe-DES a hoʻohālikelike ʻia i ka pā," ma ka International Journal of Heat and Fluid Flow, 2008.
[7] C. Arcoumanis, JM Nouri a me RJ Andrews, "Application of Refractive Index Matching to a Diesel Nozzle Internal Flow," ma 6th International Symposium on Applications of Laser Techniques to Fluid Mechanics, 1992. [8] D. Bush, CCESoteriou , M. Winterbourn a me C Daveau, "Ke noiʻi nei i nā ʻāpana hoʻokele hydraulic i nā injectors hana kiʻekiʻe" ma nā ʻōnaehana Fuel no IC ʻEnekinia, IMechE 2015.