Investigation of MHD Heat Exchange in a Liquid Metal Flow through a Tube-in-Channel System under Conditions Close to the Thermonuclear Reactor Blanket Module

IF 1.1 4区 物理与天体物理 Q4 PHYSICS, APPLIED
N. A. Luchinkin, N. G. Razuvanov, O. N. Polyanskaya, I. O. Teplyakov
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Abstract

Heat exchange in a liquid metal upward flow through a tube-in-channel system has been studied experimentally and analytically. The system consists of a vertical tube passing along the axis of a square heated channel that is connected to a natural circulation loop. Experiments have been conducted in the presence of a transverse magnetic field and without it. Probe measurements using longitudinal microthermocouple probes placed both in the tube and in the channel gap have been applied. Heat exchange averaged characteristics have been numerically simulated for experimental conditions. Three basic operating conditions of the cooling loop have been considered: the loop is shut off, the loop is open allowing free circulation in the gap without cooling, and the loop is open and provides cooling. In experiments, the profiles of averaged temperature, the distributions of heat transfer local coefficients, and the pulsation characteristics of flow temperature both in the tube and in the channel gap have been obtained. Calculation data have been compared with experimental results. It has been found that the configuration and structure of the flow significantly depend on the presence of transverse magnetic field and on whether the natural circulation loop is connected and provides cooling.

Abstract Image

接近热核反应堆包层模块条件下管道系统液态金属流动MHD换热研究
本文用实验和分析的方法研究了金属液在管内流动过程中的热交换问题。该系统由一个垂直管道组成,该管道沿着一个方形加热通道的轴线通过,该通道连接到一个自然循环回路。实验是在有横向磁场和没有横向磁场的情况下进行的。探头测量使用纵向微热电偶探头放置在管和在通道间隙已被应用。对实验条件下的换热平均特性进行了数值模拟。已经考虑了冷却回路的三种基本运行条件:回路关闭,回路打开允许在间隙中自由循环而不冷却,回路打开并提供冷却。实验得到了管内平均温度分布、换热局部系数分布以及流动温度在管道间隙内的脉动特性。计算数据与实验结果进行了比较。已经发现,流动的形态和结构在很大程度上取决于横向磁场的存在以及自然循环回路是否连接并提供冷却。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Technical Physics
Technical Physics 物理-物理:应用
CiteScore
1.30
自引率
14.30%
发文量
139
审稿时长
3-6 weeks
期刊介绍: Technical Physics is a journal that contains practical information on all aspects of applied physics, especially instrumentation and measurement techniques. Particular emphasis is put on plasma physics and related fields such as studies of charged particles in electromagnetic fields, synchrotron radiation, electron and ion beams, gas lasers and discharges. Other journal topics are the properties of condensed matter, including semiconductors, superconductors, gases, liquids, and different materials.
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