ResearchResearch Projects
Spray-Einspritzung an Zweistoffdüsen

Spray Investigation on Twin-Fluid Injectors

© Institut für Technische Verbrennung
Team:  M.Sc. Dipl.-Ing. (FH) Markus Höltermann; Jan Wichmar, M.Sc.
Year:  2018

The spray test rig consists of a frame construction which is used to install the desired nozzle as well as the needed measurement equipment. The nozzle can be aligned and positioned by a linear traversing unit in horizontal direction and the height can be set manually by a spindle drive. The nozzle can be embedded into an optically accessible chamber as needed.

Preferred measurement methods used to characterize the sprays are phase-Doppler anemometry (PDA) and shadowgraphy. Shadowgraphy or imaging methods can be used to determine macroscopic properties such as spray angle and penetration depth. Droplet diameters can be measured by high resolution shadowgraphy and transient spray breakup phenomena can be studied by high speed high resolution shadowgraphy. PDA can be used to measure droplet velocities and diameters. This allows the investigation especially of twin-fluid injectors, as being used in aviation or for the exhaust gas treatment of ship engines with urea solution.