Experiments on densely-loaded non-Newtonian slurries in laminar and turbulent pipe flows: Quarterly technical progress report No. 1. [Silica gel particles suspended in mixture of 70. 3% Stoddard solvent (saturated hydrocarbon) and 29. 7% Exxon 150 (aromatic hydrocarbon)]

Technical Report · Mon Jan 26 04:00:00 EST 1987

OSTI ID:6920816

Park, J T; Mannheimer, R J; Grimley, T A; Morrow, T B

An experimental evaluation of the structure of non-Newtonian slurries in laminar, transitional, and turbulent flow regimes in pipes is the primary objective of this research. Experiments will be conducted in a large scale pipe slurry flow facility with an inside pipe diameter of 50 mm (2 inches). Detailed flow measurements including turbulence quantities such as Reynolds stress will be taken with a two-component laser Doppler velocimeter (LDV) in a transparent test section with a transparent model slurry. During the past quarter, a transparent model slurry was developed with non-Newtonian rheological properties. Silica gel particles with diameters less than one micron were suspended in a mixture of 70.3% Stoddard Solvent (a saturated hydrocarbon) and 29.7% Exxon 150 (an aromatic hydrocarbon) by weight. The refractive index was measured as 1.4543, and the difference in refractive indices between the solids and the liquid was estimated to be less than 0.001. In rheological measurements with a concentric cylinder viscometer, a slurry with 5.6% solids by weight exhibited both slip and power law behavior. Qualitative results also indicate that the model slurry has a yield value. An adequate signal-to-noise ratio was measured in the model slurry with a two-component LDV system during bench scale tests. Several other items of significance were also completed. A Plexiglas dye injector was fabricated for the flow visualization experiments. The device contains a circumferential injector slot for visualization of wall phenomena. Test section design has been completed and fabrication is in progress. Flow visualization experiments will be initiated during the next quarter. 15 refs., 7 figs., 1 tab.

• Research Organization: Southwest Research Inst., San Antonio, TX (USA)
• DOE Contract Number: FG22-86PC90962
• OSTI ID: 6920816
• Report Number(s): DOE/PC/90962-T1; ON: DE87004486
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
013000 -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
ADSORBENTS
ALKANES
AROMATICS
DATA
DISPERSIONS
EXPERIMENTAL DATA
FLUID FLOW
HYDROCARBONS
INFORMATION
LAMINAR FLOW
MIXTURES
NUMERICAL DATA
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
PIPES
REFRACTIVITY
RESEARCH PROGRAMS
RHEOLOGY
SHEAR
SILICA GEL
SLURRIES
STRESSES
SUSPENSIONS
TEST FACILITIES
TURBULENT FLOW
VELOCITY