Velocity field in turbulent subcooled boiling flow
Book
·
OSTI ID:445439
- Arizona State Univ., Tempe, AZ (United States). Dept. of Mechanical and Aerospace Engineering
The velocity field was measured in turbulent subcooled boiling flow of Refrigerant-113 through a vertical annular channel whose inner wall was heated. A two-component laser Doppler velocimeter was used. Measurements are reported for two fluid mass velocities and four wall heat fluxes in the boiling layer adjacent to the inner wall as well as in the outer all-liquid layer. The turbulence was found to be inhomogeneous and anisotropic and the turbulent kinetic energy significantly higher than in single-phase liquid flow at the same mass velocity. The axial Reynolds shear stress in the liquid phase was observed to increase sharply near the inner wall. The near-wall velocity field appeared to be quite different from that in single-phase flow. It remains a challenge to separate the contributions of wall turbulence and bubble-induced pseudo-turbulence from the measurements which possibly represent a complicated interaction between the two.
- Sponsoring Organization:
- National Science Foundation, Washington, DC (United States); Electric Power Research Inst., Palo Alto, CA (United States)
- OSTI ID:
- 445439
- Report Number(s):
- CONF-950828--; ISBN 0-7918-1713-X
- Country of Publication:
- United States
- Language:
- English
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