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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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基于改进med模型的循环流化床壁面磨损数值模拟
, PP. 66-71
Keywords: 循环流化床(cfb),改进med模型,壁面磨损,ktgf理论,双流体模型
Abstract:
采用商业软件fluent6.3.26中的双流体模型研究了不同操作条件和颗粒物性对流化床内壁面磨损速率的影响。基于颗粒动力学理论(ktgf)对单层能量耗散(med)磨损模型进行改进,并对比验证了改进模型的准确性。采用该模型研究了表观流速、固体负载量、颗粒粒径和密度等不同操作条件对壁面磨损速率的影响。结果表明:壁面磨损速率随着表观流速和固体负载量的增加而增大;在相同的操作条件下,粒径较小和质量较轻的颗粒磨损速率较快,发生磨损的区域面积也相对较大。
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