2024-03-28T10:00:45Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/760102022-11-17T02:08:08Zhdl_2115_20045hdl_2115_139離散要素型解法による高炉の数値解析Numerical Analysis of Blast Furnace by Discrete Element Type Model夏井, 俊悟Blast FurnaceDiscrete element methodEuler-Lagrange couplingPacked bedTrickle flow564Ironmaking process is currently focused on the decreased reducing agent operation of a blast furnace in order to decrease CO2 emissions. Because the coke ratio is reduced in this operation, causing a huge pressure drop, it has become increasingly important to understand the in-furnace phenomena using the non-empirical method. The discrete element method (DEM), Euler-Lagrange coupling method (DEM-CFD), and fully-Lagrangian method (e.g. SPH, MPS) simulation were carried out to analyze the momentum, heat and mass transfer between the fluid and the particles in a packed bed. These developed numerical methods are using discrete element type model, which can track the movement of the solid or the fluid phase directly. The optimum bed structure for decreased reducing agent operation can be clarified by application of these methods. Moreover, three-dimensional information for understanding in-furnace local flow structure can be also obtained with high spatial resolution. This paper explains the outline of the latest numerical model of blast furnace.日本混相流学会Journal Articleapplication/pdfhttp://hdl.handle.net/2115/76010https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/76010/1/Konsoryu%20Vol.30%20No.2%20112.pdf0914-28431881-5790AN10088286混相流3021661732016-06-15jpninfo:doi/10.3811/jjmf.30.166著者権は日本混相流学会に帰属するpublisher