噪声与振动控制
譟聲與振動控製
조성여진동공제
Noise and Vibration Control
2015年
5期
164-166,216
,共4页
声学%抗性消声器%压力损失%传递损失%CFD%声学有限元方法
聲學%抗性消聲器%壓力損失%傳遞損失%CFD%聲學有限元方法
성학%항성소성기%압력손실%전체손실%CFD%성학유한원방법
acoustics%reactive muffler%pressure loss%transmission loss%CFD%acoustic finite element method
空气动力学性能和声学性能是用来评价抗性消声器优劣的主要指标。针对管道消声中常用的抗性消声器，利用计算流体动力学（CFD）方法模拟三种不同结构抗性消声器内部流场的压强分布特性，获得抗性消声器的压力损失，并与半经验公式的计算结果进行对比，分析不同结构抗性消声器的空气动力学性能以及半经验公式法的适用性；利用声学有限元方法对三种结构抗性消声器的传递损失进行计算，定性地分析和验证三种抗性消声器的声学性能。研究结果可为抗性消声器的结构优化设计和综合性能的提高提供参考。
空氣動力學性能和聲學性能是用來評價抗性消聲器優劣的主要指標。針對管道消聲中常用的抗性消聲器，利用計算流體動力學（CFD）方法模擬三種不同結構抗性消聲器內部流場的壓彊分佈特性，穫得抗性消聲器的壓力損失，併與半經驗公式的計算結果進行對比，分析不同結構抗性消聲器的空氣動力學性能以及半經驗公式法的適用性；利用聲學有限元方法對三種結構抗性消聲器的傳遞損失進行計算，定性地分析和驗證三種抗性消聲器的聲學性能。研究結果可為抗性消聲器的結構優化設計和綜閤性能的提高提供參攷。
공기동역학성능화성학성능시용래평개항성소성기우렬적주요지표。침대관도소성중상용적항성소성기，이용계산류체동역학（CFD）방법모의삼충불동결구항성소성기내부류장적압강분포특성，획득항성소성기적압력손실，병여반경험공식적계산결과진행대비，분석불동결구항성소성기적공기동역학성능이급반경험공식법적괄용성；이용성학유한원방법대삼충결구항성소성기적전체손실진행계산，정성지분석화험증삼충항성소성기적성학성능。연구결과가위항성소성기적결구우화설계화종합성능적제고제공삼고。
Reactive mufflers are generally evaluated by their aerodynamic performance and acoustical performance. In this paper, the CFD method was used to simulate the pressure distributions in the flow fields of three specified reactive mufflers with different structures. The pressure losses for the three mufflers were obtained. The results were compared with those by the semi-empirical formula. The aerodynamic performances of the three reactive mufflers were analyzed, and the suitability of the semi-empirical formula was evaluated. The AFEM (acoustic finite element method) was applied to calculating the transmission losses of the three reactive mufflers, and their acoustic performances were qualitatively analyzed and verified. This study provides helpful references for the structural optimization design and the performance improvement for reactive mufflers.
