基于响应面分析的扇形喷嘴结构优化对射流打击力影响
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1.内蒙古科技大学机械工程学院;2.艾弗茨(天津)冶金设备有限公司

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TH137

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内蒙古自然科学基金资助项目(2020LH05025)


Effect of fan-shaped nozzle structure optimization on jet impact force based on response surface analysis
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School of Mechanical Engineering, Inner Mongolia University of science and Technology

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    摘要:

    扇形喷嘴是高压水除鳞系统的重要部件,其内部结构参数直接影响射流性能。利用流体仿真软件Fluent对喷嘴流场进行分析,选取喷嘴出口段直径,锥形段收缩角,出口收缩角为参考因素,以射流打击力为评价指标,采用响应面方法优化喷嘴结构参数。结果表明:单因素出口段直径与锥形收缩角的改变会影响内流场速度分布,对喷嘴流量影响较小;出口段直径与喷嘴出口收缩角的变化影响着喷嘴静压降,喷嘴锥形段收缩角对压降的影响可以忽略。当出口段直径为3.15mm、锥形收缩角为26.17°、出口收缩角为40.93°时,通过建立外流场,运用气液两相流模型仿真计算,发现喷嘴打击力由原始的94.91N提升至优化后的143N。为优化喷嘴结构以提升射流打击力提供理论指导。

    Abstract:

    Fan nozzle is an important part of high pressure water descaling system, and its internal structure parameters directly affect the performance of jet. The nozzle flow field was analyzed by using fluid simulation software, and the nozzle exit diameter, cone section contraction Angle and exit contraction Angle were selected as reference factors. The jet impact force was used as evaluation index, and the nozzle structure parameters were optimized by response surface method. The results show that the velocity distribution of the internal flow field is affected by the single factor of the diameter of the outlet section and the conical contraction Angle, but the flow rate of the nozzle is little affected. The pressure drop of nozzle is affected by the change of the diameter of outlet section and the contraction Angle of nozzle outlet, and the influence of the contraction Angle of nozzle conical section on the pressure drop is negligible. When the diameter of the outlet section is 3.15mm, the taper shrinking Angle is 26.17°, and the outlet shrinking Angle is 40.93°, it is found that the nozzle striking force is increased from the original 94.91N to the optimized 143N by establishing the outflow field and applying the gas-liquid two-phase flow model simulation calculation. It provides theoretical guidance for optimizing nozzle structure to enhance jet impact force.

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引用本文

刘文广,周新健,李启才,等. 基于响应面分析的扇形喷嘴结构优化对射流打击力影响[J]. 科学技术与工程, , ():

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  • 收稿日期:2024-03-28
  • 最后修改日期:2024-05-31
  • 录用日期:2024-06-05
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