Abstract:

Turbulent oil-in-water jets are generated in an experimental facility in order to obtain the resulting droplet size distributions (DSD). Flow rates and nozzle sizes are varied. For capturing and analyzing the DSD, an endoscopic particle size analysis technique is applied. A transparent oil serves as a dispersed phase, water serves as a continuous phase.

Suggested Citation:

Pesch, Simeon. 2019. Droplet Size Distribution of Turbulent Oil-in-Water Jets. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/n7-khds-0w63

Purpose:

Determination of droplet size distribution of jet-induced oil-in-water dispersions depending on outflow conditions.

Data Parameters and Units:

The file R6.x805.000.0013_droplet_sizes.xlsx includes multiple worksheets and contains: Temperature (degree C); Pressure (MPa); Flow rate (m³/s); dynamic viscosity (Pa. s); Density (kg/m³); Velocity (m/s); Volume (L); Nozzle diameter (mm); Droplet diameter (µm), Number of particles, Probe Type (SC or PL) and the measurement values (dp, q₀, n[-], ΔQ₀[-]) for several sets of nozzle size and exit velocities. The SC and PL are the names of the probes (instrument models), the only difference is the particle size range, which is given in the dataset. The manufacturer is Sopat GmbH. The worksheets are named according to the exit velocity and nozzle size. For the measurement values, "q₀" is the probability density function (PDF) of number. This is the usual nomenclature for this kind of size distribution in literature. "n" is the number of particles in each size bin. "ΔQ₀" is the difference in terms of the cumulative distribution function (CDF) of the corresponding size bin. Dimensionless distance nozzle-probe is the distance between the jet nozzle and the endoscopic probe, made dimensionless by dividing it by the inner diameter of the jet nozzle.

Methods:

The probes from Sopat GmbH are used for particle/droplet size distribution measurements. They are introduced horizontally into the cylindrical measurement section, thus perpendicular to the oil-in-water jet, coming from the bottom of the measurement section. Particle sizes are captured and evaluated using a particle analysis software from Sopat GmbH. Viscosity was determined with a Rotational viscometer/rheometer; Malvern Kinexus, while Interfacial tension was determined with Droplet volume tensiometer; Krüss DVT50. Exit velocity was determined using a Coriolis flow meter; Endress+Hauser AG ProMass 80F. The number of particles was determined using the probes; Sopat GmbH SC, PL.

Individual Files: