Project Overview: The research objective of this project is to design a multi-cavity combined resistance muffler with high sound attenuation, wide frequency band, low pressure loss, and compact structure. It aims to achieve good noise reduction performance under limited space conditions and pressure loss constraints, ultimately reducing the intake noise of vehicle turbocharging systems to an ideal target. The research content involves multiple disciplines such as acoustics, fluid mechanics, and intelligent optimization. It requires in-depth study of the acoustic characteristics of the muffler, as well as extensive simulation calculations and experimental verification. Based on one-dimensional transfer matrix modeling of the muffler, a more accurate two-dimensional analytical method is proposed for predicting the acoustic performance of the muffler within the high-frequency range. At the same time, the flow field characteristics of the muffler will be analyzed, theoretically predicted for the pressure loss of the muffler, and finally verified through CFD simulation calculations. In addition, it is necessary to combine acoustic theoretical models with D0E analysis to assess the contribution of various structural parameters to the noise reduction performance. Suggestions for optimizing the structure of mufflers under spatial constraints and pressure loss conditions are proposed for the main influencing parameters, aiming to achieve high-amplitude broadband noise reduction effects. The acoustic experiments that need to be conducted include measurements of the transmission loss of mufflers and actual vehicle intake noise measurements, among others, to ultimately verify the acoustic theoretical model and optimization methods. This project has developed a new type of multi-chamber composite reactive muffler with superior performance, established a complete development and design process, proposed acoustic theoretical algorithms and structural optimization algorithms, as well as flow field characteristic simulation methods, etc. The designed muffler can effectively reduce the wideband noise of automotive turbocharging systems' intakes, which has significant theoretical significance and engineering value.