| 崔钺,廉博,王丽元,刘海生,闫晓丽.高压水除鳞喷头外流场流速分析[J].唐山学院学报,2023,36(3):27-32 |
| 高压水除鳞喷头外流场流速分析 |
| Flow Velocity Analysis for External Flow Field of the High-Pressure Water Descaling Nozzle |
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| DOI：10.16160/j.cnki.tsxyxb.2023.03.005 |
| 中文关键词: 高压水除鳞 喷嘴 流速 可实现k-ε模型 靶距 |
| 英文关键词: high-pressure water descaling nozzle flow velocity realizable k-ε model target distance |
| 基金项目:河北省教育厅科学技术研究项目(QN2022198) |
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| 中文摘要: |
| 为提升钢坯除鳞效果,基于可实现k-ε模型选取在用粗轧机入口某型号扁平扇形喷嘴进行高压水除鳞喷头外流场流速分析。结果表明,在高压水除鳞喷头结构参数确定的情况下,外流场打击区域的高压水射流流速直接受靶距的影响;不同入口压力下水射流流速随靶距的增加呈明显降低趋势,最大流速差随靶距(30~120 mm)的增加由40 m/s降至约18 m/s;得到的不同压力下靶距120 mm处水射流流速分布趋势说明,单纯提高高压水除鳞系统的工作压力对除鳞区域作用范围的影响不大;模拟射流中心区域打击长度与实验打击作用线长度吻合良好,说明仿真模型能够准确表达高压水除鳞喷头外流场流速的变化情况。 |
| 英文摘要: |
| In order to improve the descaling effect a certain type of flat fan-shaped nozzle at the entrance of roughing mill was selected to analyze the flow velocity based on realizable k-ε model. The results show, when the nozzle structural parameters of the high-pressure water descaling were determined,the high-pressure water flow velocity in the impact area of the outflow field was directly affected by the target distance. The flow velocity of water jet at different inlet pressures decreased obviously with the increase of target distance, and the maximum velocity difference decreased from 40 m/s to 18 m/s with the increase of target distance (30~120 mm);the distribution trend of velocity at the target distance of 120 mm under different pressure was obtained, which showed that simply increasing the working pressure of the high-pressure water descaling system had little effect on the action range of the descaling area. The simulated jet center striking length was in good agreement with the experimental striking line length, which meant that the simulation model could accurately reflect the velocity change of the outflow field of the high-pressure water descaling nozzle. |
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