The Influence of Localized Alternating Magnetic Fields on the Flow of Liquid Metal

Abstract

In metallurgy and power engineering, where liquid metal is used as a coolant, it is necessary to accurately measure the current characteristics of the liquid metal flow, since they determine the operating modes of the installations. The aim of the study is an experimental investigation of local flows that occur in liquid metal under the action of electromagnetic forces to assess their contribution to the overall flow measurement process. The study of oscillations of the vortex flow of liquid metal in a flat layer created by electromagnetic forces was conducted. The flow structure depends on the frequency of the current feeding the inductor. The flow intensity is determined by the current strength: the higher the current, the more intense the flow. The threshold value of the current frequency is determined, exceeding which the number of vortices in the system increases, the Reynolds number is higher than 3 000, which allows us to talk about the turbulent nature of the flow. At a lower current frequency, the flow structure is a single large-scale poloidal vortex. The parameters of the current frequency up to 75 Hz and the current strength up to 8 A are selected, ensuring the correct operation of the measuring system. In this case, the vortex flow has a moderate intensity, which does not negatively affect the accuracy of flow measurement

The work was carried out within the framework of a state-funded project (reg. no. 122030200191-9)

Please cite this article in English as:

Ozernykh V.S., Kolesnichenko I.V. The influence of localized alternating magnetic fields on the flow of liquid metal. Herald of the Bauman Moscow State Technical University, Series Natural Sciences, 2025, no. 2 (119), pp. 4--19 (in Russ.). EDN: HGJGYA

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