| 喷嘴结构对空化起始影响的实验研究 |
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| 引用本文： | 易灿,李根生,张定国.喷嘴结构对空化起始影响的实验研究[J].实验流体力学,2005,19(1):52-55,60. |
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| 作者姓名： | 易灿 李根生 张定国 |
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| 作者单位： | 石油大学(华东)石油工程学院,山东,东营,257061;石油大学(北京)石油天然气工程学院,北京,昌平,102249 |
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| 基金项目： | 国家杰出青年科学基金资助项目(50125413)，CNPC重点应用基础研究资助项目(03A20201) |
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| 摘 要： | 空化和空蚀现象对物体的破坏作用是十分强大的，利用其强大的破坏作用来提高清洗、切割和钻探的效率，其效果将是非常显著的。实验研究了锥形喷嘴、自振空化喷嘴和双射流喷嘴在不同围压下的空化起始能力，结果表明喷嘴结构对空化起始能力影响明显，在高围压条件下，自振空化喷嘴和双射流喷嘴比普通锥形喷嘴有更大的起始空化数，起始空化数大都在1．0以上，而锥形喷嘴最大仅为0．43。
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| 关 键 词： | 喷嘴 空化起始 空化噪声 围压 |
| 文章编号： | 1672-9897(2005)01-0052-05 |
Experimental study on cavitation inception of nozzles with different geometries |
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| YI Can,LI Gen-sheng,ZHANG Ding-guo.Experimental study on cavitation inception of nozzles with different geometries[J].Experiments and Measur in Fluid Mechanics,2005,19(1):52-55,60. |
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| Authors: | YI Can LI Gen-sheng ZHANG Ding-guo |
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| Institution: | YI Can~1,LI Gen-sheng~2,ZHANG Ding-guo~1 |
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| Abstract: | Cavitations can be applied to enhance significantly the efficiency of submerge cleaning, cutting and well drillings. This paper presents the experimental study on cavitation inception abilities of cone-shaped nozzle, self-resonating cavitating nozzle and dual-jet nozzle under various ambient pressure. The results show that higher inception cavitation number under higher ambient pressure can be achieved with self-resonating and dual-jet nozzle, the inception cavitation numbers of the two nozzle are generally above 1.0, while that of cone-shape nozzle is usually with the highest of 0.43. |
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| Keywords: | nozzle cavitation inception cavitation noise ambient pressure |
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