Experimental investigation of interfacial shear in large-particle-coal hydrotransport

Technical Report · Thu Oct 01 00:00:00 EDT 1981

OSTI ID:6066563

Barnhart, J; Eyler, L; Lombardo, N

Recent efforts in coarse-particle hydrotransport modeling include the development of a physically-based model that separates the particles into two components - suspended load and contact load. The analyses of the two components are coupled by interfacial shear resulting from the components' differing bulk velocities. In support of these modeling efforts, the interfacial friction factor for water flowing in a pipe over well-characterized coal beds was evaluated experimentally. Experiments were conducted in a 32.5-m long, 16.4-cm ID Plexiglas pipe. Coal samples of anti d/D = 0.05, 0.10, and 0.20 were placed inside the pipe at three different bed depths. Pressure taps at four axial locations measured the pressure drop as water flowed over the bed. This paper describes the apparatus, experimental and data-reduction procedures, and the results achieved. A correlation of interfacial friction factor in terms of average particle diameter suitable for modeling purposes is presented.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6066563
• Report Number(s): PNL-SA-9981; CONF-820512-2; ON: DE83014980
• Resource Relation: Conference: ASME material handling conference, Houston, TX, USA, 16 May 1982
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
HYDRAULIC TRANSPORT
MATHEMATICAL MODELS
CORRELATIONS
EXPERIMENTAL DATA
FLOWMETERS
FRICTION FACTOR
PRESSURE DROP
SHEAR
SIZE
TEST FACILITIES
CARBONACEOUS MATERIALS
DATA
ENERGY SOURCES
FOSSIL FUELS
FUELS
INFORMATION
MATERIALS
MEASURING INSTRUMENTS
METERS
NUMERICAL DATA
TRANSPORT
013000* - Coal
Lignite
& Peat- Transport
Handling
& Storage