Analysis of fluid permeability in tortuous fibrous bed based on pore radius distribution
The effect of fiber tortuosity on fluid permeability in fibrous beds has been investigated. A particle model is employed in which a fiber is replaced by spherical particles and fiber tortuosity is represented by a bending angle. Assuming a low Reynolds number, the fluid permeability is calculated ba...
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| Veröffentlicht in: | Journal of visualization 2020-02, Vol.23 (1), p.71-80 |
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| creator | Otomo, Ryoko Mori, Kazuki |
| description | The effect of fiber tortuosity on fluid permeability in fibrous beds has been investigated. A particle model is employed in which a fiber is replaced by spherical particles and fiber tortuosity is represented by a bending angle. Assuming a low Reynolds number, the fluid permeability is calculated based on the Stokesian dynamics approach. The results show that the permeability of a tortuous fibrous bed is lower than that of a straight fibrous bed. To examine the permeability dependence on the fiber tortuosity in detail, the pore distribution and pore connectivity are evaluated quantitatively by defining the pore radius. It is found that the tortuous fibers prevent the formation of large pores and their connection in the flow direction, thereby decreasing the permeability.
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| doi_str_mv | 10.1007/s12650-019-00613-1 |
| format | Article |
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| subjects | Classical and Continuum Physics Computational fluid dynamics Computer Imaging Engineering Engineering Fluid Dynamics Engineering Thermodynamics Fluid flow Heat and Mass Transfer Pattern Recognition and Graphics Permeability Regular Paper Reynolds number Tortuosity Vision |
| title | Analysis of fluid permeability in tortuous fibrous bed based on pore radius distribution |
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