| Numerical Simulation of Gas-particle Flows with Different Swirl Numbers in a Swirl Burner |
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| 作者姓名： | 罗纲 李荣先 周力行 |
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| 作者单位： | LUO Gang(罗 纲)，LI Rongxian(李荣先)，ZHOU Lixing(周力行)Department of Engineering Mechanics，Tsinghua University，Beijing 100084，China |
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| 摘 要： | ＩｎｔｒｏｄｕｃｔｉｏｎＳｗｉｒｌｂｕｒｎｅｒｓａｒｅｗｉｄｅｌｙｕｓｅｄｉｎｐｕｌｖｅｒｉｚｅｄｃｏａｌｆｉｒｅｄｂｏｉｌｅｒｆｕｒｎａｃｅｓ.Ｔｏａｃｈｉｅｖｅｈｉｇｈｅｆｆｉｃｉｅｎｃｙａｎｄｌｏｗｐｏｌｌｕｔｉｏｎｃｏｍｂｕｓｔｉｏｎ,ｎｕｍｅｒｉｃａｌｓｉｍｕｌａｔｉｏｎｉｓｎｅｅｄｅｄｔｏｐｒｅｄｉｃｔｔｈｅｓｉｚｅｏｆｔｈｅｒｅｃｉｒｃｕｌａｔｉｏｎｚｏｎｅ,ｔｈｅｉｎｔｅｎｓｉｔｙｏｆｔｈｅｒｅｃｉｒｃｕｌａｔｉｎｇｆｌｏｗｓ,ｔｈｅｐａｒｔｉｃｌｅｇａｓｍｉｘｉｎｇａｎｄｔｈｅｒｅ…
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Numerical Simulation of Gasparticle Flows with Different Swirl Numbers in a Swirl Burner |
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| LUO Gang,LI Rongxian,ZHOU Lixing.Numerical Simulation of Gas-particle Flows with Different Swirl Numbers in a Swirl Burner[J].Tsinghua Science and Technology,2000,5(1). |
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| Authors: | LUO Gang LI Rongxian ZHOU Lixing |
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| Abstract: | Swirl burner design was optimized by simulating swirl gasparticle flows with different swirl numbers at the exit of a smallscale swirl burner for pulverizedcoal furnaces using the kεkp model. The predicted twophase timeaveraged velocities and particle concentration distributions for several different cases were compared to improve the design. The effect of the swirl number on the twophase velocities and particle concentration was investigated. The results give the twophase axial and tangential timeaveraged and fluctuation velocities and particle concentrations, showing that large recirculation zones of gas and particles forms in the nearaxis region of the burner exit, but the particle concentration in the recirculating zone is very low. |
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| Keywords: | gas\|particle flow numerical simulation swirl burner |
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