Formation of the Inlet Flow Profile for Passive Control of a Magnetohydrodynamic Liquid-Metal Flow in a Channel

IF 1 4区物理与天体物理 Q4 PHYSICS, APPLIED

High Temperature Pub Date : 2023-06-01 DOI:10.1134/s0018151x23030033

引用次数: 0

Abstract

The paper describes an experimental attempt to affect the flow of liquid metal using a relatively small perturbation at an inlet to a long channel. The purpose is to form a flow structure which is stable in a strong magnetic field at high heat loads, enhance heat transfer, and achieve more predictable flow parameters. It is demonstrated that an obstacle in the form of a rod located transverse to the flow and parallel to the applied magnetic field and installed at the inlet can induce perturbations in the form of regular vortices observed along the flow at lengths as great as several tens of channel hydraulic diameters. The experiments confirm that thus generated vortices considerably change the structure of the isothermal MHD flow. In the case of mixed convection, such vortices suppress the development large-scale thermogravitational fluctuations in the flow and enhance heat transfer under certain flow conditions.

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用于通道中磁流体-金属流被动控制的入口流剖面的形成

摘要本文介绍了利用长通道入口处相对较小的扰动影响液态金属流动的实验尝试。目的是在高热负荷下形成一种在强磁场中稳定的流动结构，增强传热，并获得更可预测的流动参数。实验证明，在入口处安装一根横向于流动方向、平行于外加磁场的杆状障碍物，可以诱发沿流动方向观察到的规则涡流形式的扰动，其长度可达几十个通道水力直径。实验证实，由此产生的涡流极大地改变了等温 MHD 流动的结构。在混合对流的情况下，这种漩涡会抑制流动中大规模热重力波动的发展，并在某些流动条件下增强热传递。

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

High Temperature 物理-物理：应用

CiteScore

1.50

自引率

40.00%

发文量

审稿时长

4-8 weeks

期刊介绍： High Temperature is an international peer reviewed journal that publishes original papers and reviews written by theoretical and experimental researchers. The journal deals with properties and processes in low-temperature plasma; thermophysical properties of substances including pure materials, mixtures and alloys; the properties in the vicinity of the critical point, equations of state; phase equilibrium; heat and mass transfer phenomena, in particular, by forced and free convections; processes of boiling and condensation, radiation, and complex heat transfer; experimental methods and apparatuses; high-temperature facilities for power engineering applications, etc. The journal reflects the current trends in thermophysical research. It presents the results of present-day experimental and theoretical studies in the processes of complex heat transfer, thermal, gas dynamic processes, and processes of heat and mass transfer, as well as the latest advances in the theoretical description of the properties of high-temperature media.