Suppressed diffusion of drag-reducing polymer in a turbulent boundary layer

Journal Article · Sat Jan 01 00:00:00 EST 1972 · J. Hydronaut.; (United States)

DOI:https://doi.org/10.2514/3.48121· OSTI ID:6331685

Wu, J

The concentration of drag-reducing polymer ejected from a thin wall slot into a developing turbulent boundary layer (external flow) was measured with a laser- phototransistor unit. Experiments included tests of ejecting polymer solutions of various concentrations at various ejection rates. The polymer solution was colored with dye and the additive concentration within the boundary layer was deduced from the dye concentration, which attentuated the laser light received by the phototransistor. The results indicate a suppressed turbulent diffusion of polymer solution. (17 refs.)

• Research Organization: Hydronautics Inc
• OSTI ID: 6331685
• Journal Information: J. Hydronaut.; (United States), Vol. 6:1
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
36 MATERIALS SCIENCE
FLUID FLOW
BOUNDARY LAYERS
POLYMERS
DIFFUSION
DATA
DRAG
FRACTURING
LASERS
OIL WELLS
PHOTOTRANSISTORS
TESTING
TURBULENCE
WATER TREATMENT
WELL STIMULATION
COMMINUTION
INFORMATION
LAYERS
SEMICONDUCTOR DEVICES
STIMULATION
TRANSISTORS
WELLS
020300* - Petroleum- Drilling & Production
360403 - Materials- Polymers & Plastics- Mechanical Properties- (-1987)