Journal of Textile Research ›› 2024, Vol. 45 ›› Issue (10): 216-223.doi: 10.13475/j.fzxb.20230704101

• Machinery & Equipment • Previous Articles     Next Articles

Simulation analysis and structural optimization of hot-air bonding oven based on finite element method

LÜ Hanming(), LIANG Jinhui, MA Chongqi, DUANMU Deqing   

  1. School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China
  • Received:2023-07-18 Revised:2024-05-02 Online:2024-10-15 Published:2024-10-22

RichHTML

2

PDF (PC)

4

Abstract:

Objective The production efficiency of a hot-air bonding could be low and not efficient in energy consumption because of uneven temperature and flow field inside the oven. In order to improve the performance of the oven and reduce energy consumption, this research aims to analyze the flow field and temperature field inside the hot-air bonding oven and optimize its structure to enhance the uniformity of the temperature and flow field inside the oven.

Method The internal flow field of the oven was simulated and optimized using the finite element analysis method. A three-dimensional model of the oven fluid domain was established using SolidWorks, and the boundary conditions for simulation calculation were set according to the working conditions of the oven. The flow resistance value of the fiber network was obtained through experimental measurement, and a porous medium model with the same flow resistance was set to replace the actual model of the fiber network, and the Fluent software was used to simulate and calculate the fluid domain model inside the oven. The correctness of the simulation modeling and calculation was verified through experiments.

Results The simulation results of the original oven model showed that the internal flow field had a large flow rate in ducts 1 and 3, and a small flow rate in ducts 2 and 4. There were severe vortices in ducts 1 and 3, causing irregular airflow and significant overall flow field non-uniformity. The lowest temperature on the surface of the fiber network was 130 ℃, with the overall uniformity of 86.43%, and a total standard deviation of 6.97. The data indicates that the temperature distribution on the surface of the fiber network was relatively scattered, and the temperature uniformity was poor. It was found from the optimized oven simulation results that the flow rates in each duct were basically the same. After installing a deflector in the upper duct, the deflector guided and directed the airflow, resulting in a stable airflow in the upper duct and the disappearance of vortices. This significantly improved the uniformity of the internal flow field in the oven. The lowest temperature on the surface of the fiber network was 150 ℃, The minimum temperature was increased by 20 ℃. The worst temperature uniformity at characteristic points was 90.1%, the temperature difference in different areas decreases, the overall uniformity was 93.6%, and the overall temperature standard deviation was decreased from 6.97 to 3.72, and the overall uniformity coefficient increased from 86.43% to 93.06%, indicating significant improvement in temperature field uniformity.

Conclusion After the optimization of the inlet channel structure and the upper duct, the uniformity of the flow field and flow rate inside the oven has been improved, and the generation of vortices in the upper duct has been reduced, resulting in a more uniform airflow. The standard deviation of the temperature on the fiber surface is decreased, the uniformity coefficient is increased, and the uniformity of the temperature field and flow field has been significantly improved. It is recommended to set the temperature at the oven inlet to around 165 ℃, at which the temperature on the surface of the fiber network inside the oven can meet the requirements for the temperature of the dual-component hot-melt fibers. This not only helps to improve the performance of the oven but also achieves the goal of energy saving and consumption reduction.

Key words: finite element analysis, hot air viscosity oven, porous media model, uniformity, internal flow field, non-glue cotton

CLC Number: 

  • TS173.7

Fig.1

Diagram of internal oven fluid domain model"

Fig.2

Diagram of fiber mesh flow resistance experimental measurement equipment"

Fig.3

Pressure drop-flow rate curve"

Fig.4

Streamline diagram of an oven with unoptimized structure"

Fig.5

Surface temperature contour of fiber web in oven with unoptimized structure"

Tab.1

Temperature uniformity data on surface of fiber web in an oven with unoptimized structure"

特征线位置 平均值/℃ 标准差/℃ 均匀系数/%
y=0.5 m 154.32 7.27 83.67
y=1.0 m 156.28 8.72 81.94
y=1.5 m 160.16 8.37 86.13
y=2.0 m 159.61 5.67 88.66
y=2.5 m 163.10 6.06 89.79
x=0.6 m 153.28 5.19 89.60
x=1.2 m 156.44 5.26 89.03
x=1.8 m 150.89 8.88 83.07
x=2.4 m 159.91 4.85 90.58
x=3.6 m 161.02 9.45 82.06
均值 157.50 6.97 86.43

Fig.6

Diagram of verification experimental equipment"

Fig.7

Diagram of temperature data for experimental measurements and simulation calculations"

Fig.8

Flow field distribution of experimental air duct"

Fig.9

Streamline diagram of air duct inside simulation results"

Fig.10

Diagram of oven fluid domain model after structural optimization"

Fig.11

Optimized oven streamline diagram"

Fig.12

Surface temperature contour of oven fiber mesh after structural optimization"

Tab.2

Temperature uniformity data on surface of oven fiber net after structural optimization"

特征线位置 平均值/℃ 标准差/℃ 均匀系数/%
y=0.5 m 167.12 2.75 93.62
y=1.0 m 164.64 2.94 94.31
y=1.5 m 174.11 2.95 93.88
y=2.0 m 169.51 2.40 95.34
y=2.5 m 172.31 2.64 94.58
x=0.6 m 169.13 4.73 91.42
x=1.2 m 169.64 5.37 90.96
x=1.8 m 169.42 4.72 91.13
x=2.4 m 168.45 4.74 92.01
x=3.6 m 165.99 3.93 93.50
均值 169.03 3.72 93.06
[1] 刘春丽, 陈慰来, 梁佳琦. 废纺再生毡基材料的制备及其性能[J]. 纺织学报, 2018, 39(11):56-60.
doi: 10.13475/j.fzxb.20170904506
LIU Chunli, CHEN Weilai, LIANG Jiaqi. Preparation and properties of waste textile regenerated felt materials[J]. Journal of Textile Research, 2018, 39(11):56-60.
doi: 10.13475/j.fzxb.20170904506
[2] 周晨, 徐熊耀, 靳向煜. ES纤维热风非织造布驻极性能初探[J]. 纺织学报, 2012, 33(9):66-70.
ZHOU Chen, XU Xiongyao, JIN Xiangyu. Exploration of electret property of area bounded ES-fiber fabric[J]. Journal of Textile Research, 2012, 33(9):66-70.
[3] 张永宁, 甘应进, 王建刚, 等. 有限元分析技术及其在纺织中的应用[J]. 纺织学报, 2002(5):85-86.
ZHANG Yongning, GAN Yingjin, WANG Jiangang, et al. Finite element analysis and its application to textile industry[J]. Journal of Textile Research, 2002(5):85-86.
[4] 武吉梅, 申宪文, 刘琳琳, 等. 凹版印刷机YF93烘箱流体分析及参数优化[J]. 振动与冲击, 2013, 32(22):63-67.
WU Jimei, SHEN Xianwen, LIU Linlin, et al. Oven fluid analysis and parameter optimization for gravure printing machine YF93[J]. Journal of Vibration and Shock, 2013, 32(22):63-67.
[5] 李青华, 李冬梅, 刘德平, 等. 锂电池悬浮式烘箱数值模拟分析与结构优化[J]. 包装工程, 2020, 41(21):224-230.
LI Qinghua, LI Dongmei, LIU Deping, et al. Numerical simulation analysis and structure optimization of lithium battery suspension oven[J]. Packaging Engineering, 2020, 41(21):224-230.
[6] SMOLKA J, NOWAK A J, RYBARZ D. Improved 3-D temperature uniformity in a laboratory drying oven based on experimentally validated CFD computa-tions[J]. Journal of Food Engineering, 2010, 97(3):373-383.
[7] REK Z, RUDOLF M, ZUN I. Application of CFD simulation in the development of a new generation heating oven[J]. Strojniski Vestnik-Journal of Mechanical Engineering, 2012, 58(2):134-144.
[8] LEE S Y. Polyhedral mesh generation and a treatise on concave geometrical edges[J]. Procedia Engineering, 2015, 124:174-186.
[9] 冯浩洋, 苏新兵, 马斌麟, 等. 多面体网格在静气动弹性计算中的应用[J]. 飞行力学, 2016, 34(4):24-28.
FENG Haoyang, SU Xinbing, MA Binlin, et al. Application of polyhedron grid in static areo-elastic computation[J]. Flight Dynamics, 2016, 34(4):24-28.
[10] 项立银, 陈杨. 结构化与非结构化网格融合技术研究[J]. 雷达与对抗, 2012, 32(3):53-55.
XIANG Liyin, CHEN Yang. Study on structured and unstructured grid fusion technology[J]. Radar & ECM, 2012, 32(3):53-55.
[11] 刘佳. 合成革湿法线烘箱的数值模拟与结构优化[D]. 福州: 福州大学, 2017:20-22.
LIU Jia. Numerical simulation and structural optimization of oven in wet production line of synthetic leather[D]. Fuzhou: Fuzhou University, 2017:20-22.
[12] 闵诗源. 纸浆模塑干燥模型的建立及烘箱结构优化设计[D]. 武汉: 华中科技大学, 2019:36-37.
MIN Shiyuan. Establishment of pulp molding drying model and optimization design of oven structure[D]. Wuhan: Huazhong University of Science and Technology, 2019:36-37.
[13] 蔡苗, 张健业, 黄坤朋. 多孔材料计算模型拟合及其仿真应用研究[J]. 电声技术, 2021, 45(2):12-16.
CAI Miao, ZHANG Jianye, HUANG Kunpeng. Fitting of computational model of porous materials and simulation application[J]. Audio Engineering, 2021, 45(2):12-16.
[14] 刘波. 分离式压力耦合算法的研究及用于裂解与水合管式反应器的模拟[D]. 天津: 天津大学, 2014:26-28.
LIU Bo. A study of segregated pressure-based algorithm and simulations of cracking and hydration tubular reactors[D]. Tianjin:Tianjin University, 2014:26-28.
[15] 沈淘淘, 张文东, 崔体运. 提高温湿度标准箱的温度均匀度和波动度研究[J]. 中国计量, 2022(7):59-62.
SHEN Taotao, ZHANG Wendong, CUI Tiyun. et al. Study on temperature uniformity and volatility of improving temperature and humidity standard box[J]. China Metrology, 2022(7):59-62.
[1] YUE Xu, WANG Lei, SUN Fengxin, PAN Ruru, GAO Weidong. Finite element simulation of bending of plain woven fabrics based on ABAQUS [J]. Journal of Textile Research, 2024, 45(08): 165-172.
[2] FENG Qingguo, WU Aofei, REN Jiazhi, CHEN Yuheng. Dynamic simulation and finite element analysis of detaching roller linkage drive mechanism for cotton comber machines [J]. Journal of Textile Research, 2023, 44(09): 197-204.
[3] YU Xuliang, CONG Honglian, SUN Fei, DONG Zhijia. Design and application of functional knitted fabric imitating nepenthe mouth structure [J]. Journal of Textile Research, 2023, 44(07): 72-78.
[4] YU Yukun, SUN Yue, HOU Jue, LIU Zheng, YICK Kitlun. Dynamic finite element modeling and simulation of single layer clothing ease allowance [J]. Journal of Textile Research, 2022, 43(04): 124-132.
[5] CAO Qiaoli, LI Hao, QIAN Lili, YU Chongwen. Effect of sliver blending parameters on blending irregularity of article blended yarn [J]. Journal of Textile Research, 2022, 43(02): 81-88.
[6] WANG Bowen, LIN Senming, YUE Xiaoli, ZHONG Yi, CHEN Huimin. Evaluation of atomization quality on fabric spray sizing [J]. Journal of Textile Research, 2021, 42(12): 90-96.
[7] LIANG Zhuo, JIA Guoxin, REN Jiazhi, LI Jinjian. Deformation and stress analysis on nippers of cotton combing machine [J]. Journal of Textile Research, 2021, 42(12): 145-150.
[8] QUAN Zhenzhen, WANG Yihan, ZU Yao, QIN Xiaohong. Jet formation mechanism and film forming characteristics of multi-curved surface sprayer for electrospinning [J]. Journal of Textile Research, 2021, 42(09): 39-45.
[9] LU Jun, WANG Fujun, LAO Jihong, WANG Lu, LIN Jing. Finite element analysis of braided artificial ligaments of different structures under combined loading [J]. Journal of Textile Research, 2021, 42(08): 84-89.
[10] ZHOU Mengmeng, JIANG Gaoming, GAO Zhe, ZHENG Peixiao. Research progress in weft-knitted biaxial tubular fabric reinforced composites [J]. Journal of Textile Research, 2021, 42(07): 184-191.
[11] LÜ Changliang, HAO Zhiyuan, CHEN Huimin, ZHANG Huile, YUE Xiaoli. Finite element analysis of loop shape in weft knitted fabrics with small deformation based on homogenization theory [J]. Journal of Textile Research, 2021, 42(03): 21-26.
[12] FENG Duanpei, SHANG Yuanyuan, LI Jun. Multi-scale simulation of impact failure behavior for 4- and 5-directional 3-D braided composites [J]. Journal of Textile Research, 2020, 41(10): 67-73.
[13] WU Xianyan, SHENTU Baoqing, MA Qian, JIN Limin, ZHANG Wei, XIE Sheng. Finite element analysis on structural failure mechanism ofthree-dimensional orthogonal woven fabrics subjected to impact of spherical projectile [J]. Journal of Textile Research, 2020, 41(08): 32-38.
[14] DAI Xin, LI Jing, CHEN Chen. Finite element simulation on wear resistance of copper-plated carbon fiber tows [J]. Journal of Textile Research, 2020, 41(06): 27-35.
[15] ZHANG Huanhuan, ZHAO Yan, JING Junfeng, LI Pengfei. Yarn evenness measurement based on sub-pixel edge detection [J]. Journal of Textile Research, 2020, 41(05): 45-49.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
京ICP备14006648号
Copyright 2021 © Editorial office of Journal of Textile Research
Supported by Beijing Magtech Co.Ltd