Development and utilization of new diagnostics for dense-phase pneumatic transport. Quarterly technical progress report, October 1-December 31, 1989

Technical Report · Sun Jan 01 00:00:00 EST 1989

DOI:https://doi.org/10.2172/5142028· OSTI ID:5142028

Louge, M. Y.; Jenkins, J. T.

The main objective of this work is to develop probes for local measurements of solid velocity and holdup in dense gas-solid flows. In particular, capacitance probes are designed to measure local, time-dependent particle concentrations. In addition, a new optical fiber probe based on laser-induced-phosphorescence is developed to measure particle velocities. The principles for the capacitance and optical diagnostics were given in our first and second quarterly reports. In this reporting period, we have demonstrated with success the feasibility of the optical fiber probe. Another objective of this work is to develop a model of dense-phase conveying and to test this model in a setup that incorporates our diagnostics. In this period, as a prelude to these modeling efforts scheduled for the third year of the contract, we have carried out additional computer simulations of rapid granular flows to verify the theories of Jenkins and Richman (1988) on the anisotropy of the second moment in simple shear. 2 refs., 5 figs.

• Research Organization: Cornell Univ., Ithaca, NY (United States)
• Sponsoring Organization: USDOE Office of Fossil Energy (FE)
• DOE Contract Number: AC22-88PC88947
• OSTI ID: 5142028
• Report Number(s): DOE/PC/88947-T5; ON: DE90006787
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
MEASURING INSTRUMENTS
DESIGN
PROBES
SOLIDS
VELOCITY
ANEMOMETERS
CAPACITANCE
GAS FLOW
OPTICAL FIBERS
PHOSPHORS
PNEUMATIC TRANSPORT
PROGRESS REPORT
SOLIDS FLOW
ZINC SULFIDES
CHALCOGENIDES
DOCUMENT TYPES
ELECTRICAL PROPERTIES
FIBERS
FLUID FLOW
INORGANIC PHOSPHORS
PHYSICAL PROPERTIES
SULFIDES
SULFUR COMPOUNDS
TRANSPORT
ZINC COMPOUNDS
013000* - Coal
Lignite
& Peat- Transport
Handling
& Storage