刘雪峰¹, 白谨豪¹, 吴峰¹, 马晓迅^1,2, 危仁波¹

• 1:西北大学 化工学院陕北能源先进化工利用技术教育部工程研究中心，陕西 西安 710069
• 2:陕西省洁净煤转化工程技术中心，陕西 西安 710069

摘要(Abstract)：

为研究喷动床内颗粒的流体力学与传热特性，采用计算流体力学-离散单元(CFD-DEM)耦合方法对多喷嘴喷动流化床(IMJSFB)内的颗粒进行数值模拟，将模拟结果与常规喷动床(CSB)对比。结果表明：IMJSFB内颗粒混合与流动特性明显优于CSB，表明侧开孔的存在改善了颗粒流动死区现象。IMJSFB内的颗粒总势能和颗粒总平移动能均低于CSB，侧开孔对主喷嘴气体实现了分流，削弱了喷射区的颗粒运动。当颗粒的传热系数低、热容小、进气温度较低时IMJSFB的优势更显著。

关键词(KeyWords)： 多喷嘴喷动流化床;计算流体力学;颗粒混合特性;流动特性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(22178286)

作者(Author): 刘雪峰¹, 白谨豪¹, 吴峰¹, 马晓迅^1,2, 危仁波¹

DOI: 10.3969/j.issn.1003-9015.2023.03.006

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