Numerical simulation of the filtration performance of radiation-resistant fiber filters
In this study,numerical simulation research was conducted on the filtration performance of pleated metal fiber filters.The porous media model was used to simulate the complex stacking structure inside the metal fiber fil-ter materials.The calculation program of flow resistance and filtration efficiency was compiled according to the structural parameters of fiber filter materials,and the numerical simulation of the filtration performance of metal fi-ber filter materials was formed by combining this program with the software FLUENT.The accuracy of the estab-lished simulation method was verified with experimental data.Using this method,the filtration performance of rec-tangular pleated filters with large pleat ratios was further studied under different inlet flow rates.The results indica-ted that submicron particles could pass through the high-efficiency filters at low flow rates,with Brownian diffusion and interception playing a dominant role and inertial collisions being negligible.The flow was evenly distributed along the pleated channel,on-way resistance and the local resistance can be ignored,and the total resistance was equal to the media resistance.With the same pleat width,the most penetrated particle size gradually decreased as the inlet flow rate increased.
万方数据
维普
