The flow of grains through narrow apertures possess an extraordinary challenge: clogging. Strategies to alleviate the effect clogging, such as use external vibration or addition smaller grains, are always part design machinery for handling bulk materials. In this work, we study with numerical simulations adding self-repelling magnetic particles a sample grains. We consider vibrated two-dimensio...

Nozzle clogging frequently occurs while printing fiber-filled polymer inks with extrusion-based additive manufacturing processes, which limits the quantity of fibers that can be added to matrix, part fidelity, and geometric accuracy process. Both in situ X-ray radiography ex computed tomography were used explore mechanisms contribute nozzle clogging. Three considered, fiber volume fractions ran...

A large number of solid particles and fibrous impurities are always entrained in the fluid transported by a sewage pump, which can easily lead to blockage pump. In view this, CFD–DEM simulations were conducted this paper reveal fiber clogging mechanism coupling method with model was established verified an experimental benchmark, i.e., rectangular flow channel. The then applied pump to, after m...

In this work, we focus on robustness analysis of an integrated fuel cell and fuel reforming (FCFR) system, which relies on a feedback controller to mitigate hydrogen starvation and temperature overshoot during load transitions. The fuel reformer is used to process natural gas into a hydrogen rich flow to be utilized in a proton exchange membrane fuel cell (PEM-FC). The feedback controller uses ...

Abstract Managed aquifer recharge (MAR) is an emerging approach to enhancing water storage capacity, improving supply security and countering groundwater overexploitation. However, physical clogging, i.e. accumulation of suspended organic inorganic solids within a sediment matrix, can lead significant reduction infiltration rates present difficulties in the functioning MAR infrastructure. Clogg...

Permeable pavements are used to mitigate urban flooding. However, conventional concrete permeable have low compressive strength and prone clogging, which degrades performance reduces service life. A new type of pavement, high-strength clogging resistant pavement (CRP), has recently been developed that overcomes many limitations pavements. This paper presents a design methodology for CRP takes i...

Suspended particle transport is frequently involved in many geophysical processes and subsurface engineering applications. Although common important, the effect of liquid cohesion on clogging has been overlooked previous studies. We conduct visualized experiments dilute suspension flow a rough fracture find dramatic enhancement by tiny amount additional immiscible wetting liquid, even at weight...