A New Technique for the Measurement of Sauter Mean Diameter of Droplets in Unsteady Dense Sprays Tokyo Institute of Technology

Format:

Conference/Event

Author/Creator:

Kamimoto, Takeyuki, author.

Conference Name:

SAE International Congress & Exposition (1989-02-27 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1989

Summary:

A new technique is developed for the in-situ measurement of Sauter mean diameter of droplets in non-evaporating transient dense sprays. This method analyzes the image of a shadowpicture of a spray based on the incident light extinction principle, and allows the sizing of Sauter mean diameter of whole droplets in a transient spray with any shape. In addition, this method allows the measurement of the local droplet size in a quasi-steady region of an axisymmetric spray if the conservation equations regarding mass and momentum are included in the calculation and data analysis. A calibration was carried out using glass beads as test particles: this was proved to have an accuracy of Sauter mean diameter measurement within 10%, on average. Applications of the new technique to both diesel and gasoline (EFI) sprays have been made. The experimental results show that the rise in injection pressure contributes in the reduction of the overall Sauter mean diameter and that, in the peripheral region the droplets are smaller than those in the central region

Notes:

Vendor supplied data

Publisher Number:

890316

Access Restriction:

Restricted for use by site license