STUDIES OF SMALL PARTICLE SUSPENSIONS FOR L.M.F.R. PART IV. CONCENTRATION GRADIENTS IN FLOWING SUSPENSION

Technical Report · Tue Jul 01 04:00:00 EDT 1958

OSTI ID:4220274

Cairns, R C; Lawther, K R

ABS>A radiometric method and the apparatus used to measure cencentration gradients in flowing suspensions are described. Both Ir/sup 192/ and Tm/sup 170/ sources were used to measure gradients. Transverses of both a horizontal and a vertical pipe, in which a tungsten-water suspension was flowing, were made. Plots are given for various velocities of the concentration distribution in wt.% W across the pipe at right angles io the direction of flow. Very turbulent conditions, with velocities in excess of 13.4 fps (Re> 161,000) in a 1-in./sup 2/ pipe are needed before uniform suspension would be achieved. At 13.4 fps the difference in concentration from top to bottom of the pipe amounts to approximately 6% of the bottem concentration. Much larger concentration gradients exist at lower velocities. In vertical flow no measurable concentration gradients exist for mean velocities of 2.6 to 6.3 fps (Reynolds number 29,000 to 74,000) in a 1-in./sup 2/ pipe. Striations noticed in previous work near the settling point were observed. (auth)

• Research Organization: Australia. Atomic Energy Commission Research Establishment, Lucas Heights, New South Wales
• NSA Number: NSA-14-000277
• OSTI ID: 4220274
• Report Number(s): AAEC/E-37
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

DISTRIBUTION
ENGINEERING AND EQUIPMENT
FLUID FLOW
GAMMA DETECTION
IRIDIUM 192
LIQUID FLOW
PARTICLES
PIPES
SUSPENSIONS
THULIUM 170
TUNGSTEN
TURBULENCE
VELOCITY
WATER