Laser velocimeter measurements of multiphase flow of solids
A unique refractive index matched facility for studying solid-liquid multiphase flow has been developed. The refractive index matching of the solid and the liquid allows the use of non-intrusive Laser Doppler Velocimetry (LDV) to measure the solid and the liquid velocities. These measurements will be useful in developing a better understanding of solid-liquid flows, especially solid-liquid and solid-solid interactions. Silica gel and 50% sodium iodide solution in water (refractive index {approx}1.443) are used as the refractive index matched solid and liquid respectively. A two color back scatter mode LDV is used for making velocity measurements. Tests were conducted in solid-liquid slurries with volumetric solid concentration levels of 5% and 15% in the Reynolds number (Re) range of 400 to 9200. Silica gel particles of mean diameter 40 microns were used. Measurements included mapping of the solid and liquid velocities and obtaining the pressure drop data. Signal processing technique utilizing histogram of velocity measurements made at a point and signal amplitude discrimination was successfully used for differentiating between solid and liquid velocities. 34 refs., 61 figs., 5 tabs.
- Research Organization:
- Case Western Reserve Univ., Cleveland, OH (United States)
- Sponsoring Organization:
- DOE/FE
- DOE Contract Number:
- FG22-86PC90961
- OSTI ID:
- 7241974
- Report Number(s):
- DOE/PC/90961-T9; ON: DE90007604
- Country of Publication:
- United States
- Language:
- English
Similar Records
Laser velocimeter measurements of solids in multiphase flow: Technical progress report for the period March 1, 1988-May 31, 1988
Development of a refractive index matched test facility for solid-liquid flow studies using laser velocimetry and some initial results, September 1, 1986--February 28, 1989
Related Subjects
LIQUIDS
TWO-PHASE FLOW
SILICA GEL
SODIUM IODIDES
SOLIDS
WATER
COAL
FLOW RATE
FUEL SLURRIES
MEASURING METHODS
PROGRESS REPORT
REFRACTIVITY
REYNOLDS NUMBER
VELOCIMETERS
VELOCITY
ADSORBENTS
ALKALI METAL COMPOUNDS
CARBONACEOUS MATERIALS
DISPERSIONS
DOCUMENT TYPES
ENERGY SOURCES
FLUID FLOW
FLUIDS
FOSSIL FUELS
FUELS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INORGANIC PHOSPHORS
IODIDES
IODINE COMPOUNDS
MATERIALS
MEASURING INSTRUMENTS
MIXTURES
OPTICAL PROPERTIES
OXYGEN COMPOUNDS
PHOSPHORS
PHYSICAL PROPERTIES
SLURRIES
SODIUM COMPOUNDS
SUSPENSIONS
013000* - Coal
Lignite
& Peat- Transport
Handling
& Storage
010600 - Coal
Lignite
& Peat- Properties & Composition