Simulation of flow in a low-pressure impactor and separation efficiency of particles.
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- Koga Jiro
- Dept. of Environ. Chem., Saitama Univ.
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- Yamada Hiroshi
- Dept. of Environ. Chem., Saitama Univ.
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- Suzuki Eiji
- Dept. of Environ. Chem., Saitama Univ. Power Reactor and Nuclear Fuel Development Corp.
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- Takeuchi Kazuo
- Dept. of Environ. Chem., Saitama Univ. The Instiute of Physical and Chemical Research
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- Matsumoto Shiro
- Dept. of Environ. Chem., Saitama Univ.
Bibliographic Information
- Other Title
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- 低圧インパクター内の流れと粒子分離効率の数値シミュレーション
- テイアツ インパクターナイ ノ ナガレ ト リュウシ ブンリ コウリツ ノ ス
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Abstract
A finite difference scheme was proposed to determine the compressible fluid flow in the impactor. This scheme, based on the Lax & Wendroff and MacCormack ones, does not contain an explicit artificial dissipative term. The simulation results showed that the flow pattern and the separation efficiency of particles were determined by the ratio of downstream to upstream pressure. The effect of the jet-toplate distance and pressure ratio on the separation efficiency curves was studied. The Stokes number for the low-pressure impactor can be defined in terms of gas viscosity and mean free path at the nozzle as for the ordinary pressure impactor. The comparison between separation efficiency curves determined by simulation and measurements showed fairly good agreement at 50 % cut Stokes number.
Journal
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- KAGAKU KOGAKU RONBUNSHU
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KAGAKU KOGAKU RONBUNSHU 17 (1), 111-118, 1991
The Society of Chemical Engineers, Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001204509335040
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- NII Article ID
- 130000871142
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- NII Book ID
- AN00037234
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- COI
- 1:CAS:528:DyaK3MXhtVGjsLk%3D
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- ISSN
- 13499203
- 0386216X
- http://id.crossref.org/issn/0386216X
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- NDL BIB ID
- 3705563
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed