Emulsions: Principles and preparation - Making emulsions using flow fields - Turbulent flow
5 important questions on Emulsions: Principles and preparation - Making emulsions using flow fields - Turbulent flow
When does turbulent flow take place?
What is the mechanism of turbulent flow?
How are the turbulence, the size of eddies (draaikolken) and the forces related?
- Turbulence not too large --> eddies similar size as droplets --> viscous forces by eddies dominate
- Turbulence very large --> eddies very small --> inertial forces of liquid impinging on the droplets dominate
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Is flow in a colloid mill turbulent/laminar and which forces (viscous/inertial) dominate?
W/O emulsions --> viscosity high --> viscosity dominates
O/W emulsions --> depends on droplet size
Is flow in emulsification with ultrasound turbulent/laminar and which forces (viscous/inertial) dominate?
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