狭窄矩形通道内液固两相磨蚀特性

doi:10.16085/j.issn.1000-6613.2022-1289

化工进展 ›› 2022, Vol. 41 ›› Issue (S1): 81-90.DOI: 10.16085/j.issn.1000-6613.2022-1289

狭窄矩形通道内液固两相磨蚀特性

任立波¹(), 何海澜¹, 张曼丽¹, 卢浩²()

^1.上海板换机械设备有限公司，上海 201508
^2.华东理工大学机械与动力工程学院，上海 200237

收稿日期:2022-07-08 修回日期:2022-08-16 出版日期:2022-10-20 发布日期:2022-11-10
通讯作者: 卢浩
作者简介:任立波（1983—），博士，高级工程师。研究方向为化工过程多相流与强化传热。E-mail：by101010@163.com。
基金资助:
国家自然科学基金(52000072)

Erosion investigation of liquid-solid flows in narrow rectangular channel

REN Libo¹(), HE Hailan¹, ZHANG Manli¹, LU Hao²()

^1.Shanghai Heat Transfer Equipment Co. , Ltd. , Shanghai 201508, China
^2.School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China

Received:2022-07-08 Revised:2022-08-16 Online:2022-10-20 Published:2022-11-10
Contact: LU Hao

摘要/Abstract

摘要：

液固两相磨蚀研究主要集中于圆管弯头和射流工况，板式换热器等狭窄矩形通道内液固两相磨蚀特性的研究鲜见报道。在Fluent软件及其二次开发框架内构建了描述稀疏颗粒液固两相磨蚀特性的CFD-DPM-磨蚀耦合数学模型框架，研究了存在圆柱体阻挡物的狭窄矩形通道内两相流动特性和壁面磨蚀特性，揭示了壁面和固体颗粒的相互作用机制。研究结果表明：阻挡物的存在显著改变了狭窄矩形通道壁面的磨蚀行为；磨蚀速率随液固流速和壁面粗糙度的增加而增加，因此，保证设备较低的入口流速和壁面粗糙度对延长设备寿命至关重要；磨蚀速率随颗粒粒径的增加先增加后降低，在60μm左右时达到极大值；球形度系数对磨蚀行为影响较小。引入量纲为1颗粒尺寸，阐述了液相边界层束缚颗粒运动的作用机制；与光滑壁面工况相比，颗粒以较大能量高频撞击粗糙壁面，导致了壁面磨蚀较快。液固两相以较低的角度和速度撞击壁面，壁面材料去除机理以微切削为主。

关键词: 液固, 磨蚀, 狭窄矩形通道

Abstract:

Extensive research on the liquid-solid two-phase erosion in round tubes and jet flow conditions has been conducted, but the liquid-solid two-phase erosion investigation in narrow rectangular channels, such as in plate heat exchanger, is rarely reported. The technique for computational fluid dynamics-discrete phase method-erosion model was developed in the framework of secondary development of Fluent software. The characteristics of liquid-solid two-phase flow and wall erosion in a narrow rectangular channel with cylinder were studied, and the interaction mechanism between the wall and solid particles was explored. Simulation results showed that the presence of cylinder significantly changed the erosion rate of the wall. The erosion rate increased with the increase of liquid-solid velocity and wall roughness, and low inlet flow rates and wall roughness were critical to extend equipment life. The erosion rate increased first and then decreased with the increase of particle size, and reached the maximum value at about 60μm. Shape factor of non-spherical particles had little effect on wall erosion behavior. By means of a dimensionless particle size, the reason that the particles were trapped within the liquid viscous sublayer was explained. Compared with the smooth wall condition, the particles impacted the rough wall with higher energy and high frequency, resulting in faster erosion of the wall. The liquid-solid two-phase impinged on the wall at a lower angle and velocity, and the wall material removal mechanism was mainly micro-cutting.

Key words: liquid-solid, erosion, narrow rectangular channel

中图分类号:

TK121

任立波, 何海澜, 张曼丽, 卢浩. 狭窄矩形通道内液固两相磨蚀特性[J]. 化工进展, 2022, 41(S1): 81-90.

REN Libo, HE Hailan, ZHANG Manli, LU Hao. Erosion investigation of liquid-solid flows in narrow rectangular channel[J]. Chemical Industry and Engineering Progress, 2022, 41(S1): 81-90.

图/表 13

图1 数值模拟模型示意图（单位：mm）

图2 Nguyen实验沙粒粒径分布[24-25]

图3 径向磨蚀速率和磨蚀深度[23]曲线

图4 磨蚀速率云图（单位：kg/kg）

图5 液相速度（单位：m/s）和颗粒位置图

图6 环向90°位置处壁面磨蚀速率沿径向的分布曲线（以圆柱体外缘为坐标零点）

图7 不同入口速度下磨蚀速率及其影响因素沿环向的分布曲线

图8 不同粒径下磨蚀速率及其影响因素沿环向的分布曲线

图9 不同球形度系数下磨蚀速率及其影响因素沿环向的分布曲线

图10 不同球形度系数下磨蚀速率及其影响因素沿环向的分布曲线

图11 不同壁面粗糙度时矩形通道壁面磨蚀云图

图12 壁面粗糙度1.2mm时壁面颗粒运动形态图

图13 壁面表面形态图

参考文献 28

1	DESALE G R, GANDHI B K, JAIN S C. Particle size effects on the slurry erosion of aluminium alloy (AA 6063)[J]. Wear, 2009, 266: 1066-1071.
2	NGUYEN V B, NGUYEN Q B, ZHANG Y W, et al. Effect of particle size on erosion characteristics[J]. Wear, 2016, 348-349: 126-137.
3	STACHOWIAK G B. The effects of particle characteristics on three-body abrasive wear[J]. Wear, 2001, 249: 201-207.
4	WALKER C I, HAMBE M. Influence of particle shape on slurry wear of white iron[J].Wear, 2015: 1021-1027.
5	ARABNEJAD H, SHIRAZI S A, MCLAURY B S, et al. The effect of erodent particle hardness on the erosion of stainless steel[J]. Wear, 2015, 332/333: 1098-1103.
6	DESALE G R, GANDHI B K, JAIN S C. Slurry erosion of ductile materials under normal impact condition[J]. Wear, 2008, 264: 322-330.
7	ABD-ELRHMAN, ABOUEL-KASEM A, EMARA K M, et al. Effect of impact angle on slurry erosion behavior and mechanisms of carburized AISI 5117 steel[J]. Journal of Tribology, 2014, 136: 011106.
8	ISLAM M A, FARHAT Z N. Effect of impact angle and velocity on erosion of API X42 pipeline steel under high abrasive feed rate[J]. Wear, 2014, 311: 180-190.
9	OKA Y I, OKAMURA K, YOSHIDA T. Practical estimation of erosion damage caused by solid particle impact part I: Effects of impact parameters on a predictive equation[J]. Wear, 2005, 259: 95-101.
10	SHIMIZU K, XINBA Y A. Solid particle erosion and mechanical properties of stainless steels at elevated temperature[J]. Wear, 2011, 271: 1357-1364.
11	LI X, DING H, HUANG Z, et al. Solid particle erosion-wear behavior of SiC-Si₃N₄ composite ceramic at elevated temperature[J]. Ceramics International, 2014, 40: 16201-16207.
12	BEN-AMI Y, UZI A, LEVY A. Modelling the particles impingement angle to produce maximum erosion[J]. Powder Technology, 2016, 301: 1032-1043.
13	UZI A, LEVY A. On the relationship between erosion, energy dissipation and particle size[J]. Wear, 2019, 428-429: 404-416.
14	WANG Z T. Erosion model for brittle materials under low-speed impacts [J]. Journal of Tribology, 2020, 142: 074501.
15	ADEDEJI O E, DUARTE C A R. Prediction of thickness loss in a standard 90° elbow using erosion-coupled dynamic mesh[J]. Wear, 2020, 460-461: 203400.
16	YU W C, FEDE P, CLIMENT E, et al. Multi-fluid approach for the numerical prediction of wall erosion in an elbow[J]. Powder Technology, 2019, 354: 561-581.
17	ARABNEJAD H, SHIRAZI S A, MCLAURY B S, et al. The effect of erodent particle hardness on the erosion of stainless steel[J]. Wear, 2015, 332-333: 1098-1103.
18	任立波, 赵新强, 张少峰. 水平窄矩形通道内液固两相的流动特性[J]. 化工进展, 2018, 37(6): 2092-2100.
	REN Libo, ZHAO Xinqiang, ZHANG Shaofeng. Hydrodynamic investigation of liquid-solid flows in horizontal narrow rectangular channel[J]. Chemical Industry and Engineering Progress, 2018, 37(6): 2092-2100.
19	REN LB, ZHAO X Q, ZHANG S F. Hydrodynamic investigation of slurry flows in horizontal narrow rectangular channels[J]. International Journal of Heat and Technology, 2017, 35(4): 730-736.
20	MESSA G V, MALIN M, MALAVASI S. Numerical prediction of fully-suspended slurry flow in horizontal pipes [J]. Powder Technology, 2014, 256: 61-70.
21	胡仁涛, 任立波, 王德武, 等. 竖直窄通道充分发展段液固流动特性的数值模拟[J]. 化工学报, 2018, 69(8): 3408-3417.
	HU Rentao, REN Libo, WANG Dewu, et al. Numerical simulation of fully developed liquid-solid flow in vertical narrow Channel[J]. CIESC Journal, 2018, 69(8): 3408-3417.
22	OKA Y I, OHNOGI H, HOSOKAWA T, et al. The impact angle dependence of erosion damage caused by solid impact[J]. Wear, 1997, 203-204: 573-579.
23	ZHANG Y, REUTERFORS E P, MCLAURY B S. Comparison of computed and measured particle velocities and erosion in water and air flows[J]. Wear, 2007, 263: 330-338.
24	NGUYEN Q B, LIM C Y H, NGUYEN V B, et al. Slurry erosion characteristics and erosion mechanisms of stainless steel[J]. Tribology International. 2014, 79: 1-7.
25	NGUYEN V B, NGUYEN Q B, LIU Z G, et al. A combined numerical-experimental study on the effect of surface evolution on the water-sand multiphase flow characteristics and the material erosion behavior[J]. Wear, 2014, 319: 96-109.
26	WILSON K C, SANDERS R S, GILLIES R G, et al. Verification of the near-wall model for slurry flow[J]. Powder Technology, 2010, 197(3): 247-253.
27	HAIDER A, LEVENSPIEL O. Drag coefficient and terminal velocity of spherical and non-spherical particles[J]. Powder Technology, 1989, 58: 63-70.
28	JAVAHERI V, PORTER D, KUOKKALA V T. Slurry erosion of steel-Review of tests, mechanisms and materials[J]. Wear, 2018, 408/409: 248-273.

[1]	侯婉, 陈汇龙, 程谦, 陈英健, 卫泽鹏, 赵斌娟. 高温密封润滑膜汽液固流动特性数值计算分析[J]. 化工进展, 2023, 42(2): 699-710.
[2]	王志杰, 赵彦琳, 姚军. Rushton涡轮搅拌槽内流场特性及颗粒运动行为数值模拟[J]. 化工进展, 2021, 40(12): 6479-6489.
[3]	梁高峰, 陈学青, 王德武, 张少峰, 刘燕, 张继军. 淘洗六水氯化铝过程中晶体沉降速度与纯化规律分析[J]. 化工进展, 2021, 40(1): 386-393.
[4]	陈少奇, 邵媛媛, 马可颖, 郑莹, 祝京旭. 液固循环流化床的开发与应用——过程集成与强化[J]. 化工进展, 2019, 38(01): 122-137.
[5]	吴海珍, 韦聪, 于哲, 韦景悦, 吴超飞, 韦朝海. 废水好氧生物处理工艺中氧的传质与强化的理论与实践[J]. 化工进展, 2018, 37(10): 4033-4043.
[6]	任立波, 赵新强, 张少峰. 水平窄矩形通道内液固两相的流动特性[J]. 化工进展, 2018, 37(06): 2092-2100.
[7]	刘燕, 张英迪, 裴程林, 王智, 张伟. 水平液固循环流化床换热器传热性能评价[J]. 化工进展, 2016, 35(11): 3421-3425.
[8]	刘燕1，李洪彬1，2，王晋刚1，张少峰1. 带有Kenics静态混合器的水平液固两相流化床换热管的压降研究[J]. 化工进展, 2013, 32(11): 2579-2582.
[9]	张艳红，白志山，周萍，汪华林. 气液固三相浆态床反应器研究进展 [J]. 化工进展, 2008, 27(10): 1551-.
[10]	刘燕，张少峰，魏建明，李金红. 液固外循环流化床换热器主压降的实验研究 [J]. 化工进展, 2007, 26(10): 1489-.

狭窄矩形通道内液固两相磨蚀特性

Erosion investigation of liquid-solid flows in narrow rectangular channel

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

图/表 13

参考文献 28

相关文章 10

编辑推荐

Metrics

本文评价