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Numerical calculation of flow and heat transfer process in the new-type external combustion swirl-flowing hot stove 认领 引用
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作者 ShuchenZhang HongzhiGuo +3 位作者 XiangjunLiu ZhangpingCai XianchengGao SidongXu 《Journal of University of Science and Technology Beijing》 2003年第5期31-34,共4页
It is clarified that the important method to improve the blast temperature ofthe small and the middle blast furnaces whose production is about two-thirds of total sum of Chinafrom 1000℃ to 1250-1300℃ is to preheat b... It is clarified that the important method to improve the blast temperature ofthe small and the middle blast furnaces whose production is about two-thirds of total sum of Chinafrom 1000℃ to 1250-1300℃ is to preheat both their combustion-supporting air and coal gas. The airtemperature of blast furnaces can be reached to 1250-1300℃ by burning single blast furnace coal gasif high speed burner is applied to blast furnaces and new-type external combustion swirl-flowinghot stove is used to preheat their combustion-supporting air. The computational results of the flowand heat transfer processions in the hot stove prove that the surface of the bed of the thermalstorage balls there have not eccentric flow and the flow field and temperature field distribution iseven. The computational results of the blast temperature distribution are similar to thosedetermination experiment data. The numerical results also provide references for developing anddesigning the new-type external combustion swirl-flowing hot stoves. 展开更多
关键词 new-type external combustion swirl-flowing hot stove flow field temperaturefield numerical calculation
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Shrinkage and trajectory of the flat jet with inclination angle 认领 引用
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作者 ShufengYe YushengXie +2 位作者 HongzhiGuo YeHuang ShantongJin 《Journal of University of Science and Technology Beijing》 2003年第3期21-25,共5页
The performance of the flat jet with an inclination angle was investigated bya water model. A mathematical model for the shrinkage and the trajectory of the flat jet with aninclination angle was derived theoretically ... The performance of the flat jet with an inclination angle was investigated bya water model. A mathematical model for the shrinkage and the trajectory of the flat jet with aninclination angle was derived theoretically and verified by experimental data of the water model.The experimental results indicate that the inclination angle (alpha) has no influence on theshrinkage of the flat jet, the shrinkage of the flat jet along the width direction decreases withthe increasing of the initial velocity at the exit (u_0) and the initial thickness of the flat jet(t_0). Enough bigger initial exit velocity (u_0) and initial thickness can suppress the shrinkage ofthe flat jet along the width direction and keep the flat jet stabilized. In addition, thetrajectory of the flat jet with an inclination angle is parabolic and must be taking intoconsideration when to determine the striking distance. 展开更多
关键词 continuous reactor desulfurization flat jet modeling
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