Velocity Measurements of Turbulent Two-Phase Flow in a High-Pressure Homogenizer Model
Author
Summary, in English
The effect of disperse phase volume fraction on the turbulence in a scale model of a high-pressure homogenizer was studied experimentally. Velocity fields of the continuous phase were measured using particle image velocimetry. Refractive index matching combined with digital filtering enabled measurement with disperse phase present. Geometry and physical properties were carefully scaled in order to ensure turbulent flow and disperse phase modulation comparable to that of a technical high-pressure homogenizer. The results show a widening of the jet downstream of the gap and increased Reynolds stresses in the region of high turbulence intensity. This is consistent with previous experiments under similar conditions. Furthermore, the spectra of turbulent kinetic energy were investigated, indicating that the increase in turbulent kinetic energy is mainly due to an increase in energy of eddies of large length scales.
Department/s
- Department of Food Technology, Engineering and Nutrition
- Fluid Mechanics
- eSSENCE: The e-Science Collaboration
Publishing year
2013
Language
English
Pages
93-114
Publication/Series
Chemical Engineering Communications
Volume
200
Issue
1
Document type
Journal article
Publisher
Taylor & Francis
Topic
- Fluid Mechanics and Acoustics
- Food Engineering
Keywords
- Emulsification
- High-pressure homogenization
- Multiphase flows
- Particle
- image velocimetry
- Turbulence
Status
Published
ISBN/ISSN/Other
- ISSN: 1563-5201