다공성 막을 통한 점성유체흐름에 관한 연구 A Study on Viscous Flow through a Porous Membrane

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Analytical results are presented for flow through a porous membrane in the range of pore size which is of comparable magnitude as the mean free path of the fluid molecules. In the present work, we consider a transfer mechanism of combined Knudsen diffusion, slip flow, and viscous capillary flow through a porous flat membrane governed by Brinkman`s equation. The theory shows that as the total pressure of the system increases the Knudsen diffusion and slip flow become negligibly small, and that the dominant viscous flow reduces to a Poiseuillian in the limit of large permeability. In addition, as a model of counter-current (or cocurrent) separator module, flow behaviors through a porous hollow-fiber membrane are also analyzed to determine the relationship between the pressure variation and the permeation velocity through the porous membrane.
Publisher
한국화학공학회
Issue Date
1989
Language
Korean
Citation

KOREAN CHEMICAL ENGINEERING RESEARCH(HWAHAK KONGHAK), v.27, no.1, pp.113 - 119

ISSN
0304-128X
URI
http://hdl.handle.net/10203/66528
Appears in Collection
CBE-Journal Papers(저널논문)
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