How to Conduct Flow Analysis on the Interior of Industrial Boiler Fan Blades

How to Conduct Flow Analysis on the Interior of Industrial Boiler Fan Blades

This study investigates the effect of spherical particles adhering to the pressure side of industrial boiler fan blades on the fan’s wear resistance. Experimental results indicate that spherical particles adhering to the blades of industrial boiler fans not only effectively enhance the surface pressure and wear resistance of the fan but also control the primary areas of blade wear. By altering the distribution of spherical particles on the pressure side of the blades, the aerodynamic protection mechanism of industrial boiler fans is analysed and explained. A theoretical model has now been developed to predict the performance of industrial boiler fans. This model accounts for the effects of internal fan vortices, as well as the aerodynamic noise associated with these vortices in centrifugal fans. It provides a foundation for further research. When cleaning and refining machinery handling dust-laden gases, the particle size of the powder is already very small. The fluid dynamics of two-phase flow indicate that particle concentration is a key factor influencing impeller wear. This varies depending on the turbulence model and wear model employed. Experimental results indicate that the location of wear is related to particle size, and that the influence of particle concentration on the wear rate is far greater than that of mass concentration within the rectangular vortices of industrial boiler ventilators and three-dimensional flow. Consequently, there are significant differences between the radial velocity distribution and the law of momentum conservation, particularly regarding the velocity distribution and pressure near the vortex tongue. Under conditions of secondary flow losses and internal leakage losses, impact friction losses are severe. Through a numerical analysis of the flow field and the mechanical application of mechanical impellers in industrial boiler fans, three-dimensional finite element equations and ordinary differential equations are employed in the new method’s equations to solve the particle motion trajectory equations for three-dimensional industrial boiler fans. Using this as an example, the effects of various particle sizes on gas-solid two-phase flow, collisions and impeller wear are analysed.