Prediction of Pressure Drop in the ITER Divertor Cooling Channels

Journal Article · Fri Apr 15 04:00:00 EDT 2005 · Fusion Science and Technology

OSTI ID:20849952

Yin, S T ^[1]; Chen, J L ^[2]

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1. Mandarin Thermal Systems, Taiwan (China)
2. Taiwan Power Research Institute, Taiwan (China)

This study investigated the pressure drop in the divertor cooling channels of the International Thermonuclear Experimental Reactor (ITER). The water in the cooling channels will encounter the following flow and boiling regimes: 1) single-phase convection, 2) highly-subcooled boiling, 3) onset of nucleate boiling (ONB), and 4) fully-developed subcooled boiling. The upper operating boundary is limited by the departure from nucleate boiling (DNB) or burnout conditions. Twisted-tape insert will be used to enhance local heat transfer. Analytical models, validated with relevant databases, were proposed for the above-identified flow regimes. A user-friendly computer code was developed to calculate the overall pressure drop and the exit pressure of a specific local segment throughout the entire flow circuit. Although the operating parameters were based on the CDA phase input the results are found in general agreement when compared with the ITER EDA results.

• OSTI ID: 20849952
• Journal Information: Fusion Science and Technology, Journal Name: Fusion Science and Technology Journal Issue: 3 Vol. 47; ISSN 1536-1055
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BURNOUT
COMPUTER CODES
CONVECTION
COOLING
DEPARTURE NUCLEATE BOILING
DIVERTORS
ITER TOKAMAK
PRESSURE DROP
SUBCOOLED BOILING
WATER