PDFs & Technicians Graduates Undergraduates Past Students
Sina Ghaemi
B.Sc. : Sharif University of Technology (2006)
M.Sc. : University of Alberta (2009)
Supervisors
Dr. Payam Rahimi, Dr. David S. Nobes
Research Project: Effervescent Sprays
Effervescent atomization is based on injection of relatively small amount of gas into the liquid before exiting the atomizer nozzle . Pressure drop across the the nozzle results in sudden expansion of gas which disintegrats the liquid film into ligaments and droplets.
The effervescent atomizer which is shown in the above figure has successfully designed and built.
Shadowgraphy images from the water spray produced by the effervescent atomizer are shown in the below images. Nozzle diameter is 0.8mm.
Laser Sheet illuminating the spray droplets
Effervescent Sprays
Effervescent atomizers mainly demonstrate the following advantages over conventional atomizers:
- Very low injection pressure, less than 100 psig.
- Relatively large exit nozzle diameter.
- Low gas flow rate.
These advantages make effervescent atomizers suitable for:
- Gas turbine combustors
- IC engines
- Furnaces
- Coating
- Consumer products
- Incineration