刘家禹, 王艾伦, 蔡金, 蒋斌.异形喷嘴与圆锥形喷嘴水射流流场对比研究[J].轻工机械,2019,37(4):19-24 |
异形喷嘴与圆锥形喷嘴水射流流场对比研究 |
Comparison of Water Jet Flow Field Between Non Circle Nozzles and Conical Nozzles |
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DOI:10.3969/j.issn.1005 2895.2019.04.004 |
中文关键词: 异形喷嘴 射流速度 等速核 FLUENT仿真软件 |
英文关键词:special shape nozzles jet velocity constant velocity core FLUENT |
基金项目:湖南省科技创新计划:新型智能超声挖藕机研发(2018NK2062) |
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中文摘要: |
针对目前水射流作业中存在的效率低的问题,课题组对射流关键装置喷嘴的结构进行研究。采用了传统圆锥形喷嘴的最优尺寸参数,设计了2种新型异形喷嘴结构;通过SolidWorks建立了喷嘴的三维模型,利用FLUENT仿真软件模拟了3种喷嘴在不同入口速度条件下的流场情况。仿真结果表明:正方形喷嘴的射流离开喷嘴后射速最快,射流凝聚性最好,等速核最长,更适合于淹没射流下的作业。 |
英文摘要: |
In view of the problem of low efficiency in current water jet operations, the nozzle structure of jet critical device was studied. The optimal size parameters of traditional conical nozzles were adopted to design two new types of special shaped nozzles. A 3d model of the nozzle was established by SolidWorks, and FLUENT software was used to simulate the flow field of the three nozzles under different inlet velocities. The simulation results show that the square nozzle has the fastest jet speed when the jet leaves the nozzle. Square nozzles have the best jet cohesion and the longest constant velocity core. Square nozzles are more suitable for the operation under submerged jets. |
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