K-1910 くぼみを持つ壁面に衝突するディーゼル噴霧の挙動(S24-1 ガス流動,噴霧と混合気形成)(S24 燃料噴霧,ガス流動,混合気形成過程)

概要

論文の詳細を見る
Behavior of spray impinging on a recessed-wall was experimentally investigated as a new concept of impingement diesel spray. The spray injected through a diesel nozzle impinged vertically on the center of the circular recess. Spray height and spray path penetration were measured at various timings on high speed photographs of the spray, which was injected by a single shot injection system into a high pressure chamber. The spray impinged on the recessed-wall was more rebounded from the recess compared with the spray impinged on a flat wall. When the spray width at the wall location was wider than the recess diameter, the spray after impingement expanded along the wall. Conversely, the spray width was narrower than the recess diameter, the spray after impingement was rebounded with rolling up motion. It resulted in the formation of the spray having more homogeneous structure. Also, for increasing the spray height, it was necessary that the value of Ws/Dr should be around 0.5.
一般社団法人日本機械学会の論文
2001-08-22