Droplet motion and deposition in vertical turbulent pipe flow
Thesis/Dissertation
·
OSTI ID:6474699
The motion of droplets injected in a turbulent air flow and the rate of deposition on surrounding boundaries were studied. A new axial-viewing photographic technique was developed to measure directly the turbulent characteristics of the droplets in planes perpendicular to the mean flow in a 2-inch i.d. pipe carrying a downward flow of air. The size of the centrally injected droplets were 50 ..mu..m, 90 ..mu..m, and 150..mu..m in diameter, and the Reynolds numbers of the air flow were 36,000 and 52,000. Direct measurements were made of the particle eddy diffusivity, the radial and tangential turbulent intensities of the droplets, the characteristics of droplet motion, the mass flux, and the concentration profiles. It was found that the droplets considered in this investigation do not follow the fluid motion completely. A theoretical deposition model was developed to relate deposition results to measurements of turbulent characteristics of the droplets. A two-resistance theory is also presented to interpret droplet mass transfer across the pipe.
- Research Organization:
- Illinois Univ., Urbana (USA)
- OSTI ID:
- 6474699
- Country of Publication:
- United States
- Language:
- English
Similar Records
High-energy air shock study in a grout pipe
Convective heat and mass transfer from single evaporating water, methanol and ethanol droplets
Gas-liquid bubbly flow in vertical pipes
Conference
·
Sat Jun 01 00:00:00 EDT 1985
·
OSTI ID:5413180
Convective heat and mass transfer from single evaporating water, methanol and ethanol droplets
Book
·
Sat Dec 30 23:00:00 EST 1995
·
OSTI ID:435745
Gas-liquid bubbly flow in vertical pipes
Journal Article
·
Sat Jun 01 00:00:00 EDT 1996
· Journal of Fluids Engineering
·
OSTI ID:267963