噪声与振动控制2025，Vol.45Issue(5)：92-97,6.DOI:10.3969/j.issn.1006-1355.2025.05.015
导叶周向非均匀分布对矿用两级轴流局部通风机性能的影响
Influence of Circumferential Non-uniform Distribution of Guide Vanes on the Performance of Mineral Double-stage Axial-flow Local Fans
摘要
Abstract
Mineral axial-flow local fan is a vital ventilation equipment used in the tunneling face of coal mines.The high noise generated during its operation seriously endangers the physical and mental health of the workers.How to reduce the fan noise has become an urgent problem.In this paper,a mineral FBS No8.0 double-stage axial-flow local fan was select-ed as the study object.Three schemes of non-uniform circumferential distribution of the first-stage guide vanes were consid-ered.The unsteady flow in the entire flow passage of the fan was numerically simulated by means of the Large Eddy Simula-tion(LES)method.Then the aerodynamic noise of each part of the fan was predicted by the Ffowcs Williams-Hawkings(FW-H)method.The influence of the non-uniform distribution of the first stage guide vanes on the aerodynamic perfor-mance and noise characteristics of the fan was analyzed.The results show that implementing reasonable circumferential non-uniform distribution for the guide vanes within a specific modulation amplitude range A will not cause significant changes of the aerodynamic performance of the fan.The circumferential non-uniform distribution of the first-stage guide vanes can make the static pressure distribution on the suction surface of the second-stage rotor blades more uniform,suppress the gen-eration and detachment of vortex on the blade surfaces,and thus reduce the broadband noise.The circumferential non-uni-form distribution of the first-stage guide vanes can also reduce the discrete noise peak in the low-frequency band.Therefore,selecting an appropriate modulation amplitude A can not only ensure the aerodynamic performance of the fan but also have a significant noise reduction effect.关键词
振动与波/导叶/周向非均匀分布/流场特性/气动性能/噪声特性Key words
vibration and wave/guide vane/circumferential non-uniform distribution/flow field characteristics/aero-dynamic performance/noise characteristics分类
机械制造引用本文复制引用
陈庆光,王钦昌,林先来,刘海秀..导叶周向非均匀分布对矿用两级轴流局部通风机性能的影响[J].噪声与振动控制,2025,45(5):92-97,6.基金项目
山东省自然科学基金资助项目(ZR2021ME242) （ZR2021ME242）
