Liquid metal flat jet transformation under influence of transverse magnetic field

N Pyatnitskaya,N Luchinkin,O Zikanov,D Krasnov,I Belyaev,Ya Listratov,E Sviridov,Yu Kolesnikov

doi:10.1088/1742-6596/1689/1/012002

Abstract

The article is devoted to an experimental study of a submerged flat jet flow in a transverse magnetic field. Two different approaches to the experimental study of jet flows are described. Detailed information about the experimental program and measuring methods presented here. The flow of a flat jet 6 mm high in a square channel with a side of 56 mm is considered. The channel is positioned so that the plane of the jet is perpendicular to the magnetic field induction. The results of measuring velocity profiles and waveforms by swivel-type probe with potential sensor are presented. Effects that can be interpreted in different ways are found: strongly unstationary flow regimes, mean flow reorganization, and development of near-wall jets. Additional experiments are prepared to obtain more detailed information about the restructuring and development of the jet. In particular, continuous measurements along the channel will be made in the presence of a slight main flow.

Highlights

Liquid metals are considered as prospective coolants for fission and fusion reactors on account of their combination of excellent thermal properties, high boiling point, and tritium production capability
Of particular interest are jet flows that occur in various technical applications, such as sudden expansions or mixing, heating or cooling heat carriers
The jet combines the effects of global flow transformation and mass transfer with local effects of free shear layer transformation

Summary

Introduction

Liquid metals are considered as prospective coolants for fission and fusion reactors on account of their combination of excellent thermal properties, high boiling point, and tritium production capability (for example Pb-Li eutectic). The formation of thin shear layers, vortices, or jets of various types during the flow of an electrically conducting liquid in a magnetic field [3] is one of the features of MHD flows. The main feature of a flat jet and its main difference form a round jet is the almost instantaneous formation of thin shear layers in a plane parallel to the magnetic field.

Results

Conclusion