Studies by Y. Liu and Co-Authors Describe New Findings in Thermal Engineering (Three-dimensional analysis of gas flow and heat transfer in a regenerator with alumina balls)
By a News Reporter-Staff News Editor at Journal of Engineering -- New research on Thermal Engineering is the subject of a report. According to news reporting originating from Shanghai, People's Republic of China, by VerticalNews correspondents, research stated, "A three-dimensional (3D) unsteady mathematical model for regenerator with alumina balls has been developed based on the assumption of porous media and solved by a commercial computational fluid dynamics (CFD) software, FLUENT. The standard k-epsilon turbulence model combined with standard wall functions is used for modeling gas flow."
Our news editors obtained a quote from the research, "Momentum equation is revised to consider the impact of porous media on fluid flow. Radiation from combustion gas to the storage materials is considered in the model. User-defined functions (UDFs) program has been developed in C language and linked to FLUENT to define user-defined scalar (UDS) transport equation of energy conservation for solid phase, and to calculate interphase heat transfer as well as thermophysical properties of gas and solid phases, which are dependent on temperature. The calculated results were compared with test data, and the maximum relative error is 3.73%. Results of the model calculation showed that after 25 times of alternate changes in heating and cooling cycles, the heat absorption of regenerative balls is equal to heat released to air, implying the operation of regenerator reaches steady state. As the ball diameter decreases, the pressure gradients become steep and fluid velocity decreases."
According to the news editors, the research concluded: "To reduce temperature difference in the horizontal plane, the geometry of the regenerator has been optimized by the model."
For more information on this research see: Three-dimensional analysis of gas flow and heat transfer in a regenerator with alumina balls. Applied Thermal Engineering, 2014;69(1-2):113-122. Applied Thermal Engineering can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; Applied Thermal Engineering - www.elsevier.com/wps/product/cws_home/630)
The news editors report that additional information may be obtained by contacting Y. Liu, Baoshan Iron & Steel Co Ltd, Equipment Technol Div, Equipment & Energy Department, Tube Pipe & Bar Business Unit, Shanghai 201900, People's Republic of China. Additional authors for this research include Y.P. Liu, S.M. Tao, X.L. Liu and Z. Wen.
Keywords for this news article include: Asia, Shanghai, Thermal Engineering, People's Republic of China
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