Abo Bibliothek: Guest

ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

INFLUENCE OF CHANNEL INCLINATION ON HEAT TRANSFER OF LIQUID METAL FLOW

Get access (open in a dialog) DOI: 10.1615/IHTC16.cov.022919
pages 3061-3067

Abstrakt

Liquid metal usage is usually connected to high thermal loads. In this case, natural convection can create considerable influence on a flow hydrodynamics. For a long time, not enough attention was given to this fact because of relatively high liquid metal heat transfer coefficients, and therefore lack of interest in studying of the detailed flow structure, for example, to enhance heat transfer. However, in the last decade specific convective structures were observed experimentally in channels which naturally evolve under the influence of a strong magnetic field. Large ordered vortices can develop and stably exist in the liquid metal flow not only in conditions close to the cooling system of a tokamak, but in the absence of a strong external magnetic field at some relations of Reynolds and Grashof criteria (such as projects of fast nuclear reactors, liquid-metal batteries, metal oxide chemical reactors, electrolytic baths and molds). A clear understanding of liquid metal mixed convection laws can give innovative approaches to monitoring and diagnosing of such systems, to increase their reliability and efficiency.
This work is about study of liquid metal heat transfer regularities in an inclined pipe with downflow. We study experimentally influence of thermogravitation and effect of longitudinal or transverse magnetic fields. Moderate heat fluxes are chosen not to produce fluctuating regimes of flow in a transverse magnetic field. Focus is on changes of temperature fields and wall temperature distribution non-uniformity.