中北大学学报（自然科学版）2017，Vol.38Issue(5)：556-560,573,6.DOI:10.3969/j.issn.1673-3193.2017.05.009
基于Fluent自振脉冲射流腔体结构参数的数值优化
Numerical Optimization of the Structure Parameters of the Self-Vibration Pulse Jet Cavity Based on Fluent
摘要
Abstract
The efficiency of deep coal rock burst can be effectively improved by self-excited oscillation pulsed j et.In order to design the self-excited oscillation pulsed j et device with higher coal rock burst effi-ciency ,based on the basic principle of fluid mechanics,Fluent software is used to do the numerical sim-ulation of the self-excited oscillation pulsed j et,and to do the analysis of the influence of cavity structure of different pulse j et peak velocity.The large eddy model (LES)is used to calculate.The numerical sim-ulation shows that the velocity chart and pressure cloud diagram of self-excited oscillation pulse j et ac-cord with the vortex collision theory and the principle of pulse j et generation.The peak velocity of self-excited oscillation pulsed jet is gotten under the particular parameters (Length L=4.5 mm,Cavity di-ameter D=8 mm,Collision wall convergence angle alphaα=120°,the upper and lower nozzles diameter are respectively d1=1 mm,d2=1 .1 mm),The maximum velocity of self-excited oscillation pulsed j et is 231.21 m/s,which is 92.68% higher than that of inlet velocity,and the effect of pulse jet erosion is better.关键词
破蚀煤层/自激振荡/脉冲射流/大涡模拟Key words
broken coal seam/self-excited oscillation/pulsed j et/large eddy simulation分类
能源科技引用本文复制引用
张洪,祝锡晶,赵韡,石亦琨..基于Fluent自振脉冲射流腔体结构参数的数值优化[J].中北大学学报（自然科学版）,2017,38(5):556-560,573,6.基金项目
山西省煤层气联合研究基金资助项目(2015012018) （2015012018）
中北大学研究生科技立项资助项目(20161308,20161309) （20161308,20161309）
