The micro-scale model of fibrous media was simulated to obtain viscous resistance in clean state, which was provided to the CFD porous media. A macro-scale model for predicting the pressure drop during dust loading was established based on the Euler-Lagrangian method by implementing the UDF in ANSYS-Fluent. The trapping mechanism programs were developed to realize different distribution forms of particles in the porous media. The macro-empirical model was used to calibrate the macro-scale model under different SVFs. The 592*592*292-4 V–F9 filter was simplified to CFD porous media and the numerical simulation was carried out during dust loading. The results show that the pressure drop shows different growth trends under different trapping mechanism programs. Very good agreement was found between the experimental and simulated pressure drop during dust loading. Thus, the macro-scale model broadens the way of studying the pressure drop of fibrous media in depth filtration.

模拟纤维介质的微观模型以获得清洁状态下的粘滞阻力，并将其提供给CFD多孔介质。通过在ANSYS-Fluent中实现UDF，基于欧拉-拉格朗日方法建立了预测粉尘加载过程中压降的宏观模型。开发了捕集机制程序以实现颗粒在多孔介质中的不同分布形式。宏观经验模型用于标定不同SVF下的宏观模型。将 592*592*292-4 V-F9 过滤器简化为 CFD 多孔介质，并在粉尘加载过程中进行数值模拟。结果表明，在不同的捕集机制程序下，压降呈现出不同的增长趋势。在粉尘加载期间的实验压降和模拟压降之间发现了非常好的一致性。因此，宏观模型拓宽了研究深层过滤中纤维介质压降的方法。