化工进展 ›› 2024, Vol. 43 ›› Issue (S1): 13-20.DOI: 10.16085/j.issn.1000-6613.2024-0174
收稿日期:
2024-01-22
修回日期:
2024-03-23
出版日期:
2024-11-20
发布日期:
2024-12-06
通讯作者:
胡彦杰,江浩
作者简介:
毛宁轩(1999—),男,硕士研究生,研究方向为HMDS改性气相二氧化硅及其数值模拟。E-mail:1729824189@qq.com。
基金资助:
MAO Ningxuan(), WAN Xiaowei, JU Jie, HU Yanjie(
), JIANG Hao(
)
Received:
2024-01-22
Revised:
2024-03-23
Online:
2024-11-20
Published:
2024-12-06
Contact:
HU Yanjie, JIANG Hao
摘要:
流化床内的多级几何结构影响其内流体的动力学、热力学以及化学反应等参数,对于流化床内流场的数值模拟研究有助于理解其内复杂的流动特性,建立流化床的几何结构和操作条件优化的理论基础,从而提高流化床的传质效率和性能。以计算流体力学理论为基础建立了气固流化床内流场的数值模拟方法,研究了风帽的几何结构、筒径和帽檐长度对工业气固流化床内流场的影响规律。在此基础上,结合群体平衡方程矩方法,构建了计算流体力学-群体平衡模型(computational fluid dynamics-population balance model,CFD-PBM),利用该模型建立了工业气固流化床中纳米颗粒流化状态和团聚行为的数值模拟方法,进一步验证了筒径对流化床内纳米颗粒流化状态的影响规律。研究表明,筒径为260mm时,风帽四周气速分布均匀且风帽下端气流死区面积最小;帽檐长度为风帽出风口尺寸的1/2时,流化床内气速分布更均匀。
中图分类号:
毛宁轩, 万小维, 鞠杰, 胡彦杰, 江浩. 工业气固流化床内流场的CFD-PBM数值模拟和结构优化[J]. 化工进展, 2024, 43(S1): 13-20.
MAO Ningxuan, WAN Xiaowei, JU Jie, HU Yanjie, JIANG Hao. Numerical simulation and structural optimization of flow field in industrial gas-solid fluidized beds based on CFD-PBM[J]. Chemical Industry and Engineering Progress, 2024, 43(S1): 13-20.
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