Pressure profile calculation using finite element analysis that exploits the continuity of gas flow
SCIE
SCOPUS
- Title
- Pressure profile calculation using finite element analysis that exploits the continuity of gas flow
- Authors
- Noh, Hyeongrae; Kim, Se-Hyun; Kim, Jeehoon; Park, Chongdo; Ha, Taekyun
- Date Issued
- 2022-03
- Publisher
- American Institute of Physics Inc.
- Abstract
- We present a numerical method of calculating the pressure profile of a large ultra-high vacuum (UHV) system using finite-element analysis (FEA) that exploits the continuity of gas flow. In this study, we introduce a modified FEA (MFEA) that excludes the redundant count of aperture conductance of the element by the Oatley method and uses a correction factor compensating the beaming effect. Along with the correction and by choosing an appropriate length of the element, we improve the result for a cylindrical tube to show a small difference of 5% or less from that of the test particle Monte Carlo (TPMC) simulation. As an example of a practical application, we calculate the pressure profile of an accelerator vacuum system with a split chamber using the MFEA, and the result is validated by comparison with the TPMC. The MFEA method will be useful to design a large UHV system at an early stage that requires design iteration using a simple and fast calculation procedure. © 2022 Author(s).
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/116331
- DOI
- 10.1063/6.0001583
- ISSN
- 2158-3226
- Article Type
- Article
- Citation
- AIP Advances, vol. 12, no. 3, page. 035025, 2022-03
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- There are no files associated with this item.
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