目的 针对强化传热机理和微小齿形参数复杂导致的内螺纹管的传热性能评测较难、成本较高这一问题,借助理论计算与流场仿真改进管材换热性能,研究齿形参数对换热系数的影响规律,为管材的参数设计提供依据和指导。方法 基于Cavallini换热理论,结合Python语言编写的自主计算程序,通过设定各项物性参数,定量计算了换热系数随齿数、齿高、螺旋角、齿顶角在一定范围内的变化结果;建立了管材的三维模型,针对内螺纹管的流固接触区域,采用耦合方法对其进行六面体网格划分,使用流场仿真软件对光管、现有内螺纹管、改进后的内螺纹管进行管内换热模拟,在一定流动条件下,对比了不同管材结构的换热效果。结果 理论模型与模拟结果均表明,通过合理调整管材的结构参数,与光管相比,内螺纹管的换热性能提升了接近3倍。改进后的内螺纹管相比于现有内螺纹管换热性能提升了4.69%。结论 所提出的增大螺旋角、减小齿高和齿顶角的优化逻辑可以在一定范围内提升内螺纹管的换热性能,同时对内螺纹管的参数改进有一定的参考价值。
Abstract
To address the difficult evaluation and high cost of heat transfer performance of inner-grooved tubes because of the complicated heat transfer strengthening mechanism and small groove shape parameter, the work aims to optimize the heat transfer performance of tubes by theoretical calculation and flow field simulation and study the effect rule of tooth shape parameters on heat transfer coefficient, so as to provide basis and guidance for parameter design of tubes. Based on the theory of Cavallini heat transfer and the independent calculation program written in Python, by setting various physical parameters, the heat transfer coefficient was quantitatively calculated with the change of groove number, groove height, helix angle and addendum angle within a certain range. The three-dimensional model of the tube was established, and the hexahedral mesh was divided for the fluid-solid contact area of the inner-grooved tubes by the coupling method. The flow field simulation software was used to simulate the internal heat exchange of the smooth tube, the existing inner-grooved tube and the optimized inner-grooved tube. Under certain flow conditions, the heat exchange effects of different tube structures were compared. The theoretical model and the simulation results showed that the heat transfer performance of the inner-grooved tube was improved by three times compared with the smooth tube by reasonably adjusting the structural parameters of the tube. The heat exchange performance of the optimized inner-grooved tube was 4.69% higher than that of the existing inner grooved tube. The proposed optimization logic of increasing spiral angle, reducing groove height and addendum angle can improve the heat transfer performance of inner-grooved tubes within a certain range, and has a certain reference value for the parameter optimization of inner-grooved tubes.
关键词
内螺纹管 /
换热性能 /
流体仿真 /
参数优化 /
换热理论
Key words
inner-grooved tube /
heat transfer performance /
fluid simulation /
parameter optimization /
heat transfer theory
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参考文献
[1] 黎华杰. TA1内螺纹管的换热性能研究与挤压成形工艺优化[D]. 呼和浩特: 内蒙古工业大学, 2023.
LI H J.Study on Heat Transfer Performance and Optimization of Extrusion Forming Process of TA1 Internally Threaded Tube[D]. Hohhot: Inner Mongolia University of Tehchnology, 2023.
[2] 万胤明, 曾延琦, 叶郦峰, 等. ϕ7 mm高密齿内螺纹铜管成形工艺和热交换性能研究[J]. 铜业工程, 2020(5): 24-27.
WAN Y M, ZENG Y Q, YE L F, et al.Study on Forming Process and Heat Transfer Performance of ϕ7 mm Inner Grooved Copper Tube with High Density Tooth[J]. Copper Engineering, 2020(5): 24-27.
[3] 刘劲松, 孙扬乐, 陈大勇, 等. 工艺参数对三辊行星旋轧铜管尺寸定量影响研究[J]. 精密成形工程, 2024, 16(9): 1-12.
LIU J S, SUN Y L, CHEN D Y, et al.Quantitative Effect of Process Parameters on the Size of Three-Roll Planetary Rolling Copper Tube[J]. Journal of Netshape Forming Engineering, 2024, 16(9): 1-12.
[4] 吴晓敏, 李辉, 龚鹏, 等. 水平微肋管内蒸发及冷凝换热性能研究[J]. 工程热物理学报, 2006, 27(3): 460-462.
WU X M, LI H, GONG P, et al.Evaporation and Condensation Heat Transfer in Horizontal Micro-Fin Tubes[J]. Journal of Engineering Thermophysics, 2006, 27(3): 460-462.
[5] 张剑飞, 徐星, 夏毅康, 等. 微通道翼型导流肋强化传热数值研究[J]. 工程热物理学报, 2024, 45(5): 1431-1439.
ZHANG J F, XU X, XIA Y K, et al.Numerical Study on Heat Transfer Enhancement of Microchannel with Airfoil Ribs[J]. Journal of Engineering Thermophysics, 2024, 45(5): 1431-1439.
[6] 文彦臻, 邓云华, 贾震. 气凝胶填充金属蜂窝夹层结构隔热性能试验与模拟[J]. 中国机械工程, 2023, 34(5): 556-562.
WEN Y Z, DENG Y H, JIA Z.Tests and Simulation of Thermal Insulation Performance for Aerogel-Filled Metal Honeycomb Sandwich Structures[J]. China Mechanical Engineering, 2023, 34(5): 556-562.
[7] 朱天意, 黄理浩, 陶乐仁. R513A在水平管内流动沸腾传热特性的研究[J]. 制冷学报, 2024, 45(5): 137-144.
ZHU T Y, HUANG L H, TAO L R.Experimental Study on Flow Boiling Heat Transfer Characteristics of R513A Inside Horizontal Tubes[J]. Journal of Refrigeration, 2024, 45(5): 137-144.
[8] 陶智, 马遥, 由儒全, 等. 边界层理论研究进展综述[J]. 中国科学: 技术科学, 2024, 54(6): 979-1002.
TAO Z, MA Y, YOU R Q, et al.A Review of the Research Progress of Boundary Layer Theory[J]. Scientia Sinica (Technologica), 2024, 54(6): 979-1002.
[9] WANG Z N, ZHOU Q T.Heat Transfer Characteristics of Laminar Flow in Internally Finned Tubes under Various Boundary Conditions[J]. Journal of Thermal Science, 1994, 3(2): 103-109.
[10] LIU X Y, JENSEN M K.Geometry Effects on Turbulent Flow and Heat Transfer in Internally Finned Tubes[J]. Journal of Heat Transfer, 2001, 123(6): 1035-1044.
[11] 祝超, 牛胜利, 王俊. 内螺纹管中超临界水的传热数值模拟[J]. 热能动力工程, 2023, 38(6): 96-106.
ZHU C, NIU S L, WANG J.Numerical Simulation of Supercritical Water Heat Transfer in Rifled Tubes[J]. Journal of Engineering for Thermal Energy and Power, 2023, 38(6): 96-106.
[12] LV Q P, WANG L H, LI Z M, et al.Robust Optimization for Integrated Production and Energy Scheduling in Low-Carbon Factories with Captive Power Plants under Decision-Dependent Uncertainty[J]. Applied Energy, 2025, 379: 124827.
[13] CAVALLINI A, DEL COL D, DORETTI L, et al.Condensation in Horizontal Smooth Tubes: A New Heat Transfer Model for Heat Exchanger Design[J]. Heat Transfer Engineering, 2006, 27(8): 31-38.
[14] 黄世新, 蔡锋, 曾何生, 等. 内螺纹铜管成形工艺开发及换热性能研究[J]. 铜业工程, 2023(2): 108-113.
HUANG S X, CAI F, ZENG H S, et al.Research on Forming Process Development and Heat Exchange Performance of Internal Threaded Copper Tube[J]. Copper Engineering, 2023(2): 108-113.
[15] WANG Z D, YAN Z D, YANG N, et al.Mathematical Modeling and CFD Investigation of the Novel Oscillating Shear Valve Generating Sinusoidal Signals by Fluid Pressure Fluctuation[J]. Flow Measurement and Instrumentation, 2025, 102: 102758.
[16] CAVALLINI A, DEL COL D, DORETTI L, et al.Heat Transfer and Pressure Drop during Condensation of Refrigerants Inside Horizontal Enhanced Tubes[J]. International Journal of Refrigeration, 2000, 23(1): 4-25.
[17] KUMAR A, KUMAR R, KUMAR DAS A.An Inclusive Review on Structural Enhancement Techniques in Forced Condensation Inside Tubes[J]. International Journal of Heat and Fluid Flow, 2024, 106: 109297.
[18] GOTO T, JIGE D, INOUE N, et al.Condensation Flow Visualization, Heat Transfer, and Pressure Drop in Printed Circuit Heat Exchangers with Straight and Wavy Microchannels[J]. International Journal of Refrigeration, 2023, 152: 234-240.
[19] 何宽, 柳建华, 余肖霄, 等. 水平内螺纹铜管内R404A的冷凝压降特性[J]. 热能动力工程, 2020, 35(1): 140-145.
HE K, LIU J H, YU X X, et al.Condensation Pressure Drop Characteristics for R404A in Horizontal Micro-Fin Tube[J]. Journal of Engineering for Thermal Energy and Power, 2020, 35(1): 140-145.
[20] GREGORIG R.Hautkondensation an Feingewellten Oberflächen Bei Berücksichtigung Der Oberflächenspannungen[J]. Zeitschrift Für Angewandte Mathematik und Physik ZAMP, 1954, 5(1): 36-49.
[21] 路阳, 柳建华, 张维加, 等. 两种齿形强化单管沸腾传热性能对比试验研究[J]. 流体机械, 2018, 46(4): 67-71.
LU Y, LIU J H, ZHANG W J, et al.Experimental Comparison Research on Boiling Heat Transfer Performance of Enhanced Single-Tube with Two Types of Tooth[J]. Fluid Machinery, 2018, 46(4): 67-71.
[22] ZHU W, LIN W Y, ZHANG S, et al.Modeling and Analysis of Fluid-Solid Coupling Heat Transfer and Fluid Flow in Transonic Nozzle[J]. Applied Thermal Engineering, 2025, 260: 124885.
[23] 于博文, 何孝天, 徐进良. 超临界CO2池式传热流固耦合传热特性数值模拟[J]. 物理学报, 2024, 73(10): 214-223.
YU B W, HE X T, XU J L.Numerical Simulation of Fluid-Structure Coupled Heat Transfer Characteristics of Supercritical CO2 Pool Heat Transfer[J]. Acta Physica Sinica, 2024, 73(10): 214-223.
[24] 丁亚琪. 真空冷凝换热性能模拟与实验研究[D]. 杭州: 浙江大学, 2015.
DING Y Q.Simulation and Experimental Study on Heat Transfer Performance of Vacuum Condensation[D]. Hangzhou: Zhejiang University, 2015.
[25] 余旻丰, 彭旭东, 孟祥铠, 等. 接触式机械密封外圆周织构强化换热机理研究[J]. 中国机械工程, 2023, 34(11): 1268-1279.
YU M F, PENG X D, MENG X K, et al.Research on Heat Transfer Enhancement Mechanism of Contact Mechanical Seals with Textured Circumference Surfaces[J]. China Mechanical Engineering, 2023, 34(11): 1268-1279.
[26] 王杰, 田园, 陈长江, 等. 基于Fluent分析大口径涡流管节流效果[J]. 真空科学与技术学报, 2023, 43(2): 156-162.
WANG J, TIAN Y, CHEN C J, et al.Analysis of Throttling Effect of Large Caliber Vortex Tube Based on Fluent[J]. Chinese Journal of Vacuum Science and Technology, 2023, 43(2): 156-162.
基金
辽宁省教育厅基本科研项目（LJKMZ20220591）;中国科学院国际合作项目（172GJHZ2022054GC）;常州市领军型创新人才引进培育项目（CQ20220057）
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