Methods for Noise Control in Mine Axial Fans

Methods for Noise Control in Mine Axial Fans

Currently, detailed noise analysis and research on mine axial fans are being conducted by examining the harmful effects of noise generated by these fans—which are commonly used in the ceramics industry—and exploring countermeasures. The primary sources of noise and their propagation paths are identified, and effective measures are implemented to reduce or eliminate noise transmission along these paths and eliminate noise sources. The performance characteristics of mine axial fans are closely related to their internal flow field structure. Therefore, in some simplified models, numerical simulations of specific parts of the fan cannot accurately reflect the interaction between the impeller and the propeller. To understand the root causes of performance variations, optimize fan performance, and improve system characteristics, a detailed analysis of the flow field structure of the entire machine is required. In the software data module, the functional method is used to simulate the performance of mine axial fans under various operating conditions. The simulated design speed exceeds that of existing experimental data. Consequently, this provides a reliable theoretical foundation for the interaction between design and performance optimization. Finite element software is used to simulate the flow field of the mine axial fan, and the results of the numerical simulations are presented. A parametric design method is adopted to rapidly obtain performance parameters of the mine axial fan under various geometric conditions and to optimize the design. The internal dimensions of the mine axial flow fan create an unstable flow field; therefore, turbulence models are simulated at various relative positions, and the pressure distribution for turbine performance analysis varies over time. Simultaneously, improvements in instantaneous performance, as well as the blade tip and vortices, indicate that this is a new method for enhancing the overall performance of mine axial flow fans at specific times and relative positions. Furthermore, this software enables direct three-dimensional numerical simulation of mining axial fans, capturing static pressure variations arising from unsteady flow and unstable fields. Based on this, the parameters of the fan blades were optimized using the least-squares method, and the optimization results were validated through numerical simulation.