| 围压下双射流喷嘴空化初生能力的实验研究 |
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| 引用本文： | 易灿,李根生,张定国. 围压下双射流喷嘴空化初生能力的实验研究[J]. 中国石油大学学报(自然科学版), 2005, 29(4) |
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| 作者姓名： | 易灿 李根生 张定国 |
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| 作者单位： | 1. 中国石油大学石油工程学院,山东,东营,257061
2. 中国石油大学石油天然气工程学院,北京,102249 |
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| 基金项目： | 国家自然科学基金资助项目(90410007)，国家杰出青年科学基金资助项目(50125413) |
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| 摘 要： | 为了提高射流破岩效果和深井钻井的速度,实验研究了双射流喷嘴在不同围压下的空化初生能力,并与普通锥形喷嘴进行了比较。结果表明,在同等条件下,双射流中心喷嘴出口直径对双射流喷嘴空化初生能力影响明显;在高围压条件下,双射流喷嘴比普通锥形喷嘴具有更大的初生空化数,且大都大于1.0,而锥形喷嘴最大仅为0.43。
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| 关 键 词： | 双射流喷嘴 空化初生 空化噪声 围压 实验研究 |
Experimental study on cavitation inception ability of dual-jet nozzle under confining pressure |
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| YI Can,LI Gen-sheng,ZHANG Ding-guo. Experimental study on cavitation inception ability of dual-jet nozzle under confining pressure[J]. Journal of China University of Petroleum (Edition of Natural Sciences), 2005, 29(4) |
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| Authors: | YI Can LI Gen-sheng ZHANG Ding-guo |
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| Affiliation: | YI Can~1,LI Gen-sheng~2,ZHANG Ding-guo~1 |
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| Abstract: | In order to improve rock breaking effect of jet and penetration rate of drilling deep wells,the cavitation inception ability of dual-jet nozzles under confining pressure was studied by experiment and compared with that of a common cone-shaped nozzle.The results show that the diameter of central orifice can affect the cavitation inception ability of dual-jet nozzle under the same conditions.The inception cavitation number of the dual-jet nozzle under high confining pressure is greater than that of the common cone-shaped nozzle.Moreover,the inception cavitation numbers of dual-jet nozzles are generally above 1.0,while the greatest value of cone-shaped nozzle is 0.43. |
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| Keywords: | dual-jet nozzle cavitation inception cavitation noise confining pressure experimental study |
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