"内燃机消声器压力波传播仿真及衰减分析"

is model consists of a muffler geometry for an internal combustion engine, including several sections and pipes separated by rigid walls. The geometry is designed to dampen pressure waves generated by the engine to reduce the noise emitted. The simulation is performed in the frequency domain using COMSOL Multiphysics software. The model analyzes the propagation and attenuation of harmonic pressure waves in the muffler within the frequency range of 100 Hz to 1000 Hz. Simulation Results The simulation results show the transmission loss of pressure waves within the muffler. The analysis reveals the effectiveness of the muffler in attenuating the pressure waves across the frequency spectrum. The results provide valuable insights into the acoustic performance of the muffler and its ability to reduce noise levels. Conclusion In conclusion, the simulation of pressure wave propagation in an automotive muffler using COMSOL Multiphysics demonstrates the importance of understanding the behavior of harmonic waves in complex geometries. The analysis of the transmission loss in the frequency range of 100 Hz to 1000 Hz showcases the effectiveness of the muffler in attenuating noise generated by the internal combustion engine. Overall, this example serves as a valuable tool for engineers and researchers in the automotive industry to optimize muffler design for sound reduction and improve overall vehicle performance. The simulation results offer a comprehensive understanding of the acoustics within the muffler, aiding in the development of quieter and more efficient automotive exhaust systems.