Library Subscription: Guest
Home Archives Officers Future meetings American Society of Thermal and Fluids Engineering
4th Thermal and Fluids Engineering Conference

ISSN: 2379-1748

NATURAL AND MIXED CONVECTION IN RECTANGULAR ENCLOSURES AND CHANNELS CONTAINING LIQUID METALS AND PARTITION WALLS

Milorad B. Dzodzo
Westinghouse Electric Company, 1000 Westinghouse Drive, Cranberry, PA 16066, USA; CFD Unit, ME Building, Imperial College, Exhibition Road, London, UK

DOI: 10.1615/TFEC2019.fnd.028098
pages 1103-1106


KEY WORDS: Natural Convection, Mixed Convection, Liquid Metals, Rectangular Enclosures, Rectangular Channels, Partition Walls, Conjugated Heat Transfer, Finite Volume Method

Abstract

Natural and mixed convection generated transient velocity and temperature fields in rectangular three dimensional enclosures and channels containing liquid metal (lead-bismuth) and solid partitions (steel) were numerically predicted with computational fluid dynamics model based on a finite volume method. The results were compared with the previously obtained results for idealized two dimensional models in the symmetry planes. The developed model takes into account variable properties of the liquid metal and conjugated heat transfer in enclosures and channels with solid partitions between them. The ranges of considered Rayleigh and Prandtl numbers is 5500 < Ra < 2.9*107 and 0.011 < Pr < 0.016, respectively. The inlet velocities and fluid properties in the straight rectangular channels were kept comparable to the ones generated by natural convection in enclosures and resulted in a Reynolds numbers range of 1300 < Re < 3300. With increased Rayleigh numbers, the transitions from laminar to oscillatory and finally to turbulent flow regime were observed.

Purchase $20.00 Check subscription Publication Ethics and Malpractice Recommend to my Librarian Bookmark this Page