| 龚励,傅学东,张华东,张臻宸,吴晓建,刘建胜,杨赞.燃气轮机发电机组进气管道气动声源分析[J].井冈山大学自然版,2025,(5):100-106 |
| 燃气轮机发电机组进气管道气动声源分析 |
| ANALYSIS OF AERODYNAMIC NOISE SOURCES IN THE INTAKE DUCT OF A GAS TURBINE GENERATOR SET |
| 投稿时间：2025-03-13 修订日期：2025-04-11 |
| DOI：10.3969/j.issn.1674-8085.2025.05.012 |
| 中文关键词: 声学 降噪 气动声源 进气管道 四极子声源 偶级子声源 |
| 英文关键词: acoustics noise reduction aerodynamic source intake duct quadrypole sound source dipole sound source |
| 基金项目:国家自然科学基金项目(52465029); 南昌县(小蓝经开区)“揭榜挂帅”项目(多通道低噪声燃气轮机发电机组) |
| 作者 | 单位 | E-mail | | 龚励 | 南昌大学先进制造学院, 江西, 南昌 330031 | | | 傅学东 | 泰豪电源技术有限公司, 江西, 南昌 330200 | | | 张华东 | 泰豪电源技术有限公司, 江西, 南昌 330200 | | | 张臻宸 | 泰豪电源技术有限公司, 江西, 南昌 330200 | | | 吴晓建 | 南昌大学先进制造学院, 江西, 南昌 330031 | | | 刘建胜 | 南昌大学先进制造学院, 江西, 南昌 330031 | liujiansheng@ncu.edu.cn | | 杨赞 | 南昌大学先进制造学院, 江西, 南昌 330031 | |
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| 中文摘要: |
| 针对某款燃气轮机发电机组进气噪声较大的问题，以进气管道为研究对象，通过STAR CCM+软件仿真分析了其产生的气动噪声分布，研究结果表明，四极子声源和偶极子声源主要集中在挡板和管道弯头之后的区域，这是由于挡板和管道弯头导致流速升高和湍流加剧所致。仿真实验还研究了入口速度、挡板高度和管道弯头圆角半径对气动声源强度的影响，结果表明，降低入口速度和挡板高度可使气动噪声源强度显著地下降，而管道弯头圆角半径的影响则不明显。在维持入口速度不变的前提下，通过将挡板高度从12 cm减少到6 cm，同时将弯头圆角半径从0 cm增加至30 cm，可使四极子和偶极子声源强度分别降低4.9 dB和4.0 dB。 |
| 英文摘要: |
| To address the issue of high intake noise in a specific gas turbine generator set, this study focuses on the intake duct as the research object and analyzes the aerodynamic noise generated through simulation using STAR CCM+ software. The results indicate that the quadrupole and dipole sound source are primarily concentrated in the area downstream of the baffle and duct elbow, which was caused by the increased flow velocity and intensified turbulence resulting from the baffle and duct elbow. Further studies were conducted on the effects of inlet velocity, baffle height, and elbow radius on aerodynamic sound source intensity. The results show that reducing the inlet velocity and baffle height significantly decreases the intensity of aerodynamic noise sources,while the elbow radius has minimal impact. While keeping the inlet velocity constant, reducing the baffle height from 12 cm to 6 cm and increasing the elbow radius from 0 cm to 30 cm decreases the quadrupole and dipole noise source intensities by 4.9 dB and 4.0 dB. |
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