Numerical Study on the Effects of Flow-guiding Components and Exhaust Pipes on the Performance of Hot-air Drying Ovens

WANG Bo; HAN Qingquan; MIAO Xujun; HAN Qi; SUN Jianwei

doi:10.19554/j.cnki.1001-3563.2026.19.023

PDF(1668 KB)

Packaging Engineering ›› 2026, Vol. 47 ›› Issue (19) : 229-236. DOI: 10.19554/j.cnki.1001-3563.2026.19.023

Green Packaging and Circular Economy

Numerical Study on the Effects of Flow-guiding Components and Exhaust Pipes on the Performance of Hot-air Drying Ovens

WANG Bo^1,*, HAN Qingquan¹, MIAO Xujun², HAN Qi², SUN Jianwei³

Author information +

History +

Abstract

The work aims to investigate the effect of the hot-air drying oven structure on drying performance. Three-dimensional models of four ovens with different structures were established with SolidWorks. Numerical simulations of the hot-air flow and heat transfer processes inside the ovens were conducted via Ansys Fluent, and the effects of the nozzle-outlet flow guide and the exhaust pipe penetrating the air plenum on velocity distribution, flow resistance, and heat transfer rate on the substrate surface were analyzed. The flow-guiding components at the nozzle outlets obstructed the air supply on both sides of the jet and the pressure balance, causing jet deflection and thereby reducing the impinging heat transfer intensity between the hot air and the substrate surface. The exhaust pipes had little effect on the heat transfer rate, but increased the velocity deviation at the nozzle outlets and the flow resistance, thereby reducing heat transfer uniformity. After removal of the flow-guiding components and the exhaust pipes, the flow resistance of the hot air increased by 19.27 Pa, while the heat transfer rate on the substrate surface increased by 33.7%, and the coefficient of variation of the heat flux decreased from 2.31% to 1.35%. The flow-guiding components are the main structural factor affecting the heat transfer performance of the oven, while the exhaust pipes mainly affect the flow resistance and heat transfer uniformity. Removing the flow-guiding components and the exhaust pipes can improve the heat transfer intensity and uniformity on the substrate surface, which is beneficial to improving the drying performance of the oven.

Key words

hot-air drying oven / numerical simulation / flow-guiding component / exhaust pipe / drying performance

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

WANG Bo, HAN Qingquan, MIAO Xujun, HAN Qi, SUN Jianwei. Numerical Study on the Effects of Flow-guiding Components and Exhaust Pipes on the Performance of Hot-air Drying Ovens[J]. Packaging Engineering. 2026, 47(19): 229-236 https://doi.org/10.19554/j.cnki.1001-3563.2026.19.023

References

[1] 王文茹, 赵强. 应用CFD对传统干燥箱进行数值模拟及优化设计[J]. 机械管理开发, 2024, 39(12): 5-8.
WANG W R, ZHAO Q.Numerical Simulation and Optimization Design of Traditional Drying Oven Using CFD[J]. Journal of Mechanical Management and Development, 2024, 39(12): 5-8.
[2] 赵仁平, 何鹏德. 纸张干燥技术及其能效分析(上)[J]. 中华纸业, 2014, 35(16): 10-14.
ZHAO R P, HE P D.Paper Drying Technology and Its Energy Efficiency Analysis (Part I)[J]. China Pulp & Paper Industry, 2014, 35(16): 10-14.
[3] 邝沿, 侯和平, 孙玉香, 等. 涂布机烘箱温度场特性分析与结构优化[J]. 中国造纸, 2025, 44(6): 170-182.
KUANG Y, HOU H P, SUN Y X, et al.Temperature Field Characteristic Analysis and Structural Optimization of Coating Machine Oven[J]. China Pulp & Paper, 2025, 44(6): 170-182.
[4] 白文华, 包能胜, 许鹏, 等. 印刷涂布烘箱V型条缝喷嘴冲击射流流场的数值模拟[J]. 包装工程, 2011, 32(3): 28-32.
BAI W H, BAO N S, XU P, et al.Numerical Simulation of Impinging Jet Flow Field of V-Shaped Slot Nozzle in Printing and Coating Oven[J]. Packaging Engineering, 2011, 32(3): 28-32.
[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 Q H, LI D M, LIU D P, et al.Numerical Simulation Analysis and Structural Optimization of Suspension Oven for Lithium Battery[J]. Packaging Engineering, 2020, 41(21): 224-230.
[6] 焦鑫康. 基于基材流场及换热特性分析的精密涂布悬浮式烘箱结构优化[D]. 西安: 西安理工大学, 2024:29-35.
JIAO X K.Structural Optimization of Precision Coating Suspension Oven Based on Analysis of Substrate Flow Field and Heat Transfer Characteristics[D]. Xi'an: Xi'an University of Technology, 2024:29-35.
[7] 李青华, 李冬梅, 刘德平, 等. 动力锂电池悬浮烘箱风速场特性分析与结构优化[J]. 机械设计, 2021, 38(8): 31-37.
LI Q H, LI D M, LIU D P, et al.Analysis of Wind Velocity Field Characteristics and Structural Optimization of Suspension Oven for Power Lithium Battery[J]. Mechanical Design, 2021, 38(8): 31-37.
[8] 吴成成. 印染热定型机风道结构优化设计[J]. 价值工程, 2020, 39(27): 107-109.
WU C C.Optimal Design of Air Duct Structure for Printing and Dyeing Heat Setting Machine[J]. Value Engineering, 2020, 39(27): 107-109.
[9] ATTALLA M, MAGHRABIE H M, QAYYUM A, et al.Influence of the Nozzle Shape on Heat Transfer Uniformity for In-Line Array of Impinging Air Jets[J]. Applied Thermal Engineering, 2017, 120: 160-169.
[10] ERGUR E, CALISIR T.Numerical Investigation of Thermal and Flow Characteristics of Impinging Synthetic Jet with Different Nozzle Geometries at Low Nozzle-to-Plate Distances[J]. International Journal of Thermal Sciences, 2023, 193: 108463.
[11] 王清洁, 周钢, 温治, 等. 多排狭缝型气体射流冲击换热的三维数值模拟[J]. 工业炉, 2013, 35(1): 5-8.
WANG Q J, ZHOU G, WEN Z, et al.Three-Dimensional Numerical Simulation of Multi-Row Slot Gas Jet Impingement Heat Transfer[J]. Industrial Furnace, 2013, 35(1): 5-8.
[12] 黄卿. 包装印刷设备的烘干风嘴分布参数规律研究[J]. 包装工程, 2020, 41(11): 219-226.
HUANG Q.Study on Distribution Parameter Law of Drying Air Nozzles in Packaging Printing Equipment[J]. Packaging Engineering, 2020, 41(11): 219-226.
[13] 宋建辉, 丁俊健, 涂志刚. 涂布干燥气悬浮烘箱腔体计算机模拟与仿真分析[J]. 包装工程, 2019, 40(19): 223-229.
SONG J H, DING J J, TU Z G.Computer Simulation and Simulation Analysis of the Cavity of an Air-Floating Oven for Coating Drying[J]. Packaging Engineering, 2019, 40(19): 223-229.
[14] 王永周, 侯和平, 陈绪兰, 等. 考虑流固耦合的烘箱热风流场模拟与结构优化[J]. 数字印刷, 2022, 30(3): 121-128.
WANG Y Z, HOU H P, CHEN X L, et al.Simulation and Structural Optimization of Hot Air Flow Field in Oven Considering Fluid-Structure Interaction[J]. Digital Printing, 2022, 30(3): 121-128.
[15] 贾凤宇, 金公羽, 史宇超, 等. 喷嘴喉部与涡流室面积比对涡流管性能的影响[J]. 化学工程, 2026, 54(5): 51-56.
JIA F Y, JIN G Y, SHI Y C, et al.Effect of Nozzle Throat and Vortex Chamber Area Ratio on Vortex Tube Performance[J]. Chemical Engineering, 2026, 54(5): 51-56.
[16] AFROZ F, SHARIF M A R. Numerical Study of Heat Transfer from an Isothermally Heated Flat Surface Due to Turbulent Twin Oblique Confined Slot-Jet Impingement[J]. International Journal of Thermal Sciences, 2013, 74: 1-13.
[17] OLSSON E E M, AHRNÉ L M, TRÄGÅRDH A C. Flow and Heat Transfer from Multiple Slot Air Jets Impinging on Circular Cylinders[J]. Journal of Food Engineering, 2005, 67(3): 273-280.
[18] 武秋敏, 焦鑫康, 夏禹康, 等. 悬浮式烘箱风嘴结构的优化设计及实验验证[J]. 包装工程, 2024, 45(9): 150-157.
WU Q M, JIAO X K, XIA Y K, et al.Optimal Design and Experimental Verification of Air Nozzle Structure for Suspension Oven[J]. Packaging Engineering, 2024, 45(9): 150-157.
[19] 孙龙. 凹版印刷机热风干燥系统的性能研究[D]. 西安: 西安理工大学, 2008: 41-43.
SUN L.Performance Study of Hot Air Drying System for Gravure Printing Machine[D]. Xi'an: Xi'an University of Technology, 2008: 41-43.