化工学报 ›› 2023, Vol. 74 ›› Issue (9): 3766-3774.DOI: 10.11949/0438-1157.20230674
何松1,2(), 刘乔迈1, 谢广烁1, 王斯民1, 肖娟1()
收稿日期:
2023-07-03
修回日期:
2023-09-02
出版日期:
2023-09-25
发布日期:
2023-11-20
通讯作者:
肖娟
作者简介:
何松(2001—),男,硕士研究生,hesong0909@163.com
基金资助:
Song HE1,2(), Qiaomai LIU1, Guangshuo XIE1, Simin WANG1, Juan XIAO1()
Received:
2023-07-03
Revised:
2023-09-02
Online:
2023-09-25
Published:
2023-11-20
Contact:
Juan XIAO
摘要:
为解决高浓度水煤浆管道输送阻力大的问题,提出在水煤浆管道中通入气体,采用气膜减阻以降低管道的阻力损失。针对宾汉非牛顿流体水煤浆,基于流体体积(VOF)多相流模型,通过数值模拟研究分析了加气管关键参数对管道阻力系数的影响,并结合遗传聚合响应面模型与二次拉格朗日非线性规划(NLPQL)算法进行代理辅助优化。结果表明:在水煤浆管道中通入气体能够有效降低壁面剪切应力,气体速度与加气管直径对管道阻力系数影响较为显著,并且提升气体速度与增大加气管直径能够降低阻力系数,而管道阻力系数基本不受加气管道角度影响。优化以阻力系数最小化为目标函数,得出一组加气管参数,优化后管道阻力系数降低了0.0207,减阻率增加了16.90%,研究结果为高浓度水煤浆管道加气减阻机理及结构优化提供了理论指导。
中图分类号:
何松, 刘乔迈, 谢广烁, 王斯民, 肖娟. 高浓度水煤浆管道气膜减阻两相流模拟及代理辅助优化[J]. 化工学报, 2023, 74(9): 3766-3774.
Song HE, Qiaomai LIU, Guangshuo XIE, Simin WANG, Juan XIAO. Two-phase flow simulation and surrogate-assisted optimization of gas film drag reduction in high-concentration coal-water slurry pipeline[J]. CIESC Journal, 2023, 74(9): 3766-3774.
结构 | 气体速度/ (m·s-1) | 加气管 直径/mm | 加气 角度/(°) | 阻力 系数 | 减阻率/% | 误差/% |
---|---|---|---|---|---|---|
原始结构 | 2.5 | 30 | 20 | 0.0921 | 24.30 | — |
CFD验证 | 2.5 | 30 | 20 | 0.0920 | 24.20 | 0.10 |
优化结构 | 3.5 | 40 | 90 | 0.0714 | 41.20 | — |
CFD验证 | 3.5 | 40 | 90 | 0.0715 | 41.15 | 0.08 |
表1 优化结果
Table 1 Optimization results
结构 | 气体速度/ (m·s-1) | 加气管 直径/mm | 加气 角度/(°) | 阻力 系数 | 减阻率/% | 误差/% |
---|---|---|---|---|---|---|
原始结构 | 2.5 | 30 | 20 | 0.0921 | 24.30 | — |
CFD验证 | 2.5 | 30 | 20 | 0.0920 | 24.20 | 0.10 |
优化结构 | 3.5 | 40 | 90 | 0.0714 | 41.20 | — |
CFD验证 | 3.5 | 40 | 90 | 0.0715 | 41.15 | 0.08 |
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