0445120059 0445120231 Common Rail Fuel Injector Inoenderana neCummins SAA6d107e-1 Komatsu PC200-8

Dynamic cavitation mukati meyakanyanya kuita dhiziri jekiseni - yekuyedza uye CFD kuongorora(chikamu 4)

Iyo 1000Bar yakaenzana kesi yakateedzerwa ichishandisa chiyero chakafanana chekutsikirira kudonha sekuverengerwa kweLarge Scale Model. Kune iyo cavitation, musanganiswa womuenzaniso wakashandiswa. Izvi zvinotora kuti zvese mvura nemhute zvinofamba mune homogeneous multiphase kuyerera; kunyangwe isiri isina miganhu, iko fungidziro inoshanda ye cavitating inoyerera. Zvikamu zviviri zvisingasviki zvinofananidzirwa, izvo zvinonzwisisika pamadonhwe ekudzvinyirira anoshandiswa muhukuru hwekuenzanisira.

Kufananidzwa kwe1000Bar yakaenzana jekiseni pressure yakapa maitiro echinguvana anoenderana nemigumisiro yekuedza, sezvinoratidzwa muMufananidzo 3 nemifananidzo misere yekuedza kubva kuMufananidzo 2. Iyo yakawanda ndeye 156Hz, ichipa kuwirirana kwakanakisisa nehuwandu hwekuedza kwe160Hz. Mafirimu eese ari maviri ekuyedza kuyerera uye CFD mhedzisiro inoratidza kufanana kunoshamisa. Avhareji kukosha kweCd kubva kune yakasanganiswa LES RANS modhi i0.71. Izvi zvinopa chibvumirano chakanakisa nehukoshi hwakayerwa paLarge Scale Model. Mhedzisiro iyi inopa chivimbo mukuenzanisira uye kusimbiswa kwakasimba kwemusanganiswa wemhirizhonga uye multiphase CFD modhi. Ruzivo ruzere rwunopihwa mu [8].

Real-saizi CFD Modelling

Iyo CFD modhi yakamhanyirwa iyo chaiyo saizi kesi uye yakagadzira yakafanana pulsation padyo ne150 kHz. Iyo inotarisirwa frequency kubva pachiyero chekuverenga ndeye 160 kHz, iyo inosimbisazve nzira. 5. Hurukuro Nzira yechokwadi yakaratidzwa iyo inogonesa kushandiswa kweLES CFD modeling mukuvandudza chigadzirwa. Kumwe kusimbiswa kwenzira kwakaratidzwawo, izvo zvisingawanzo kuLES CFD munharaunda iyi.