skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Development of ITER Divertor Vertical Target with Annular Flow Concept - I: Thermal-Hydraulic Characteristics of Annular Swirl Tube

Abstract

Thermal-hydraulic tests for pressurized water in an annular tube with a twist fin have been performed to examine its applicability to high-heat-flux components of the International Thermonuclear Experimental Reactor (ITER) divertor. The annular swirl tube consists of two concentric tubes: an outer smooth tube and an inner tube with an external twist fin to enhance heat transfer of the cooling water in the annulus section between the outer and the inner tubes. Critical heat flux (CHF) tests under one-sided-heating conditions show that the annular swirl tube has as high removal limitation as the conventional swirl tube, the dimensions of which are similar to those of the outer tube of the annular swirl tube. A minimum axial velocity of 7.1 m/s is required for 28 MW/m{sup 2}, the ITER design value. Pressure drops in the annulus section and the end return have been measured. The applicability of the existing correlations for heat transfer and CHF to the annular swirl tube has also been examined.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [2];  [2]
  1. Japan Atomic Energy Research Institute (Japan)
  2. ITER Garching Joint Work Site (Germany)
Publication Date:
OSTI Identifier:
20849766
Resource Type:
Journal Article
Journal Name:
Fusion Science and Technology
Additional Journal Information:
Journal Volume: 46; Journal Issue: 4; Other Information: Copyright (c) 2006 American Nuclear Society (ANS), United States, All rights reserved. http://epubs.ans.org/; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1536-1055
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COOLING; CORRELATIONS; CRITICAL HEAT FLUX; DESIGN; DIVERTORS; HEAT TRANSFER; ITER TOKAMAK; PLASMA HEATING; PRESSURE DROP; THERMAL HYDRAULICS; TUBES; VELOCITY; WATER

Citation Formats

Ezato, K, Dairaku, M, Taniguchi, M, Sato, K, Suzuki, S, Akiba, M, Ibbott, C, and Tivey, R. Development of ITER Divertor Vertical Target with Annular Flow Concept - I: Thermal-Hydraulic Characteristics of Annular Swirl Tube. United States: N. p., 2004. Web.
Ezato, K, Dairaku, M, Taniguchi, M, Sato, K, Suzuki, S, Akiba, M, Ibbott, C, & Tivey, R. Development of ITER Divertor Vertical Target with Annular Flow Concept - I: Thermal-Hydraulic Characteristics of Annular Swirl Tube. United States.
Ezato, K, Dairaku, M, Taniguchi, M, Sato, K, Suzuki, S, Akiba, M, Ibbott, C, and Tivey, R. 2004. "Development of ITER Divertor Vertical Target with Annular Flow Concept - I: Thermal-Hydraulic Characteristics of Annular Swirl Tube". United States.
@article{osti_20849766,
title = {Development of ITER Divertor Vertical Target with Annular Flow Concept - I: Thermal-Hydraulic Characteristics of Annular Swirl Tube},
author = {Ezato, K and Dairaku, M and Taniguchi, M and Sato, K and Suzuki, S and Akiba, M and Ibbott, C and Tivey, R},
abstractNote = {Thermal-hydraulic tests for pressurized water in an annular tube with a twist fin have been performed to examine its applicability to high-heat-flux components of the International Thermonuclear Experimental Reactor (ITER) divertor. The annular swirl tube consists of two concentric tubes: an outer smooth tube and an inner tube with an external twist fin to enhance heat transfer of the cooling water in the annulus section between the outer and the inner tubes. Critical heat flux (CHF) tests under one-sided-heating conditions show that the annular swirl tube has as high removal limitation as the conventional swirl tube, the dimensions of which are similar to those of the outer tube of the annular swirl tube. A minimum axial velocity of 7.1 m/s is required for 28 MW/m{sup 2}, the ITER design value. Pressure drops in the annulus section and the end return have been measured. The applicability of the existing correlations for heat transfer and CHF to the annular swirl tube has also been examined.},
doi = {},
url = {https://www.osti.gov/biblio/20849766}, journal = {Fusion Science and Technology},
issn = {1536-1055},
number = 4,
volume = 46,
place = {United States},
year = {Wed Dec 15 00:00:00 EST 2004},
month = {Wed Dec 15 00:00:00 EST 2004}
}