Research on the reconstruction of porous bronze structures based on powder metallurgy simulation

The microscopic morphology of pores within the porous throttle determines the gas flow state, which directly affects the macroscopic performance of the air bearing. Geometric modeling of porous materials is a prerequisite for pore characterization and fluid state analysis. Therefore, in this study, a porous model was established by simulating each step of the powder metallurgy process of porous bronze, in which the sintering fusion simulation was innovatively accomplished by median filtering of the material cross-sectional images. The feasibility of the reconstruction method was verified by comparing pore morphology parameters and permeability results with the actual porous materials. On this basis, the flow simulation was performed to reveal the fluid flow state inside the pore channel structures. This method avoids the complex algorithms of mathematical methods and the dependence on high-precision instruments of experimental methods. [Display omitted] •A 3D porous structure was reconstructed via powder metallurgy simulation.•Surface pores and model permeability were compared with actual materials.•The PNM was created and calculated to investigate 3D pore characteristics.•Gas flow states within the pores of porous materials were simulated using CFD.