Droplet collisions
Grant number:
SO 204/35-3
Title:
Experimental investigation and modelling of coalescence and agglomeration of fluid droplets
Head:
Prof. Dr.-Ing. M. Sommerfeld
Staff:
Dr.-Ing Hai Li
Description:
The present work focuses on the investigation of binary droplet collisions consisting of solutions with different mass fraction of solids. The increase of solids content is associated with a remarkable increase in viscosity. In order to generate mono-disperse droplets two fine liquid jets are excited by means of piezo-electric generators causing a controlled break-up. The impact parameter and the relative velocity included in the We-number are changed systematically. The methodical part will concentrate on a different method to describe the tracking of the droplets to determine the relative velocity and the resulting trajectory of the colliding droplets. Mass fraction and hence viscosity have a great influence on the collision outcome and cause a shift of the impact parameter–Weber number–diagram (B–We–diagram) towards higher Weber numbers. The goal of the investigation is to achieve a model which describes the collision outcome depending on global parameters as mentioned above
Experimental setup and droplet collision
1th period report
Zwischenbericht 1. Förderperiode.pdf
(775.8 KB) vom 18.01.2011