Experimental and numerical studies of solid-liquid pipe flow
- National Taiwan Ocean Univ., Keelung (Taiwan, Province of China). Dept. of Marine and Mechanical Engineering
- Case Western Reserve Univ., Cleveland, OH (United States). Dept. of Mechanical and Aerospace Engineering
A refractive index matched facility is developed for studying solid-liquid pipe flows for solid concentration up to 25% by volume. Velocity measurements of both solid and liquid phases are conducted by using a two-color backscatter mode laser Doppler velocimetry (LDV). Utilizing the test results, including the axial velocity profiles and visualization results, four flow regimes are identified with Reynolds numbers. They are stationary bed flow, saltation flow, heterogeneous flow and homogeneous flow regimes. Difference between the solid and liquid velocities is measured for the saltation flow and heterogeneous flow regimes. No velocity lag can be detected for slurry flows in the homogeneous flow regime. An inclined tube manometer is employed to measure the pressure data of the slurry flows. In the homogeneous flow regime, the measured friction factors compare well with Turian`s correlations. A numerical model is developed for solid-liquid slurry piper flow in the homogeneous flow regime to obtain the axial velocities of the solid and liquid phase, the solid concentration distribution and the liquid turbulent kinetic energy and dissipation rate. A two-liquid postulation is adopted to construct the transport equations and a modified Rouse-Schmidt equation is used to calculate local solid concentration distribution. By considering the interphase interaction effects, a general {kappa}-{epsilon} model is applied to describe the turbulent kinetic energy production and dissipation. Excellent agreement between the calculated axial velocity profiles and the experimental data is found.
- DOE Contract Number:
- FG22-86PC90961
- OSTI ID:
- 110079
- Report Number(s):
- CONF-940659-; ISBN 0-7918-1372-X; TRN: IM9543%%381
- Resource Relation:
- Conference: 1994 American Society of Mechanical Engineers (ASME) Fluids Engineering Division summer meeting, Lake Tahoe, NV (United States), 19-23 Jun 1994; Other Information: PBD: 1994; Related Information: Is Part Of Liquid-solid flows 1994. FED Volume 189; Roco, M.C.; Crowe, C.T.; Joseph, D.D.; Michaelides, E.E. [eds.]; PB: 263 p.
- Country of Publication:
- United States
- Language:
- English
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