水资源与水工程学报

文章摘要

YANG Wei,SUN Yue,YANG Guang,YANG Jiasi.高压切割喷嘴冲击磨损的数值分析Journal of Water Resources and Water Engineering[J].,2011,22(4):

高压切割喷嘴冲击磨损的数值分析

Numerical analysis on impact wear for high pressure cutting nozzle

DOI：

英文关键词: high pressure cutting nozzle impact wear shear stress wear loss numerical analysis

基金项目:

Author Name	Affiliation
YANG Wei,SUN Yue,YANG Guang,YANG Jiasi	YANG Wei1,SUN Yue1,YANG Guang2,YANG Jiasi3(1.College of Architecture And Engineering,Liaoning Technical University,Fuxin 123000,China,2.Students Affairs Division,Fuxin Coal Works' Medical School,Fuxin 12300,3.College of Marxism,Changchun University of Science and Technology,Changchun 130022,China)

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中文摘要:

以复用矿井含煤颗粒的水对高压切割喷嘴的磨损物理问题为研究对象,采用计算流体力学理论进行数值计算,分析讨论了质量浓度为10、15、20、25、30、40 mg/L条件下速度、剪应力、磨损的分布以及变化关系。计算、分析结果表明:磨损主要发生在出口部位和锥体的后半部份,入口部份和锥体前半部份磨损较小;入口部位、锥体部位磨损量、剪应力随质量浓度增加变化较小;出口部位磨损量在质量浓度为10～20 mg/L减小较快,超过20 mg/L后变化不大;出口部位流体速度、磨损量、剪应力与质量浓度间存在对应关系。煤粒入口速度与混合物速度相同、锥体部位煤粒流体速度低于锥体部位混合物速度(平均值)约79.4%;煤粒出口部位速度随质量浓度的增大而呈现先增加后减小的趋势,速度最大值发生在浓度20 mg/L。

英文摘要:

Taking wear physics problem of high pressure cutting nozzle in using coal-bearing water in mine as research object and using computational fluid dynamics theory to make numerical calculation,this paper analyzed and discussed the distribution and changing relations of velocity,shear stress,wear under the different condition of mass concentration as 10,15,20,25,30 and 40 mg/L.The results indicated that wear mainly happened in the outlet and the latter half of cone,wear loss of inlet and the first half of cone...

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