Characteristics of the Hydrodynamic Coefficient for Flow of a Steam-Water Mixture in a Pebble Bed

[+] Author and Article Information
Alexandr A. Avdeev1

 All-Russia Nuclear-Power Machine Building Research and Development Institute (VNIIAM), 125171 Moscow, Russiaaaa@vniiam.ru

Boris F. Balunov, Rostislav A. Rybin

 Polzunov Scientific & Development Association on Research and Design of Power Equipment (NPO CKTI), 191167, St. Petersburg, Russia

Ruslan I. Soviev, Yuri B. Zudin

 All-Russia Nuclear-Power Machine Building Research and Development Institute (VNIIAM), 125171 Moscow, Russia


Corresponding author.

J. Heat Transfer 129(9), 1291-1294 (Jul 25, 2006) (4 pages) doi:10.1115/1.2712862 History: Received November 10, 2005; Revised July 25, 2006

Pressure loss for flow of a steam-water mixture in a pebble bed is experimentally investigated (the first stage of the study was described in Avdeev, , 2003 [High Temp., 41, pp. 371–383]). The measurements of the care performed within the wide range of regime parameters: pressures of 0.915.6MPa, mass-flow rates of 107770kg(m2s) and steam quality of 0–0.49. The experimental data for the pressure loss of single-phase air and water flows were used as reference data. The final results are represented in the form of the ratio of the pressure loss for the steam-water flow to that for the single-phase water flow at identical mass-flow rates.

Copyright © 2007 by American Society of Mechanical Engineers
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Figure 1

Sketch of the measuring section: (1) working segment, (2) lower grid, and (3) upper grid

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Figure 2

Photographs of pebbles used in the pebble bed: (a) present study and (b) Avdeev (10)

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Figure 3

Dependence of the hydrodynamic-drag coefficient on the Reynolds number for fluid flow in the pebble bed: (1) air and (2) water

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Figure 4

Dependence of the relative pressure loss on steam quality for fluid flow of a steam-water mixture in the pebble bed; ●: p=2.0–3.0Mpa; ∎: p=4.6–5.6Mpa; ▴: p=8.4–10.4Mpa; ◆: p=14.6–15.6MPa



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