Experimental investigation on the moving characteristics of molten metal droplets impacting coolant

Journal Article · Fri Feb 15 04:00:00 EST 2008 · Experimental Thermal and Fluid Science

DOI:https://doi.org/10.1016/J.EXPTHERMFLUSCI.2007.11.002· OSTI ID:21030259

Li, Liangxing; Li, Huixiong; Chen, Tingkuan ^[1]

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1. State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xian, Shaanxi 710049 (China)

This paper reports the results of an experimental investigation on the moving characteristics of molten metal droplets impacting coolant free surface. A visualization experimental facility of molten fuel coolant interactions (MFCI) is designed and set up in the present study. The lead-bismuth (Pb-Bi) alloys are employed as the metal materials. An automatic control circuit is designed and applied to control the release of the molten droplets. High-speed camera is employed to record the movement of the molten metal droplets falling down and into a coolant pool. Based on the analysis of the experimental data, a so-called ''J-region'' of the droplet's velocity-time curves was found and the melt droplet enters the ''J-region'' when it impacts the free water surface. In the ''J-region'', the velocity of the melt droplet decreases rapidly and suddenly at first, and then increases again. The droplet gradually reaches a comparatively steady velocity when it leaves the ''J-region''. The present study provides essential information for further study on the fragmentation behavior of high-temperature molten droplets in coolant. (author)

• OSTI ID: 21030259
• Journal Information: Experimental Thermal and Fluid Science, Journal Name: Experimental Thermal and Fluid Science Journal Issue: 4 Vol. 32; ISSN 0894-1777; ISSN ETFSEO
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
BISMUTH ALLOYS
COOLANTS
DIAGRAMS
DROPLETS
EXPERIMENTAL DATA
FRAGMENTATION
FUEL-COOLANT INTERACTIONS
LEAD ALLOYS
LIQUID METALS
MOLTEN METAL-WATER REACTIONS
SURFACES
TEMPERATURE RANGE 0400-1000 K
VELOCITY
WATER