高圧雰囲気中に噴射されたディーゼル噴霧の平均粒径

概要

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The new empirical equations to represent the Sauter mean diameter of a spray injected from a diesel nozzle were reported in this paper. In order to determine the new equations of the mean diameter, drop sizes of a diesel spray were analyzed by a laser diffraction technique. Liquids with different viscosities and different surface tensions were tested. The maximum injection pressure and the maximum ambient pressure were 90 MPa and 3 MPa, respectively. According to the tendencies of break-up length and drop sizes of a spray for an injection velocity and an ambient pressure, the spray formation mechanism could be divided into two categories as a function of the injection velocity and physical properties of the liquid. Finally, dimensionless analysis for each category of a spray could lead tot the empirical equations of the Sauter mean diameter.
一般社団法人日本機械学会の論文
1989-10-25