ENO interpolation 기반 분해과정을 활용한 다중해상도 유동해석 기법 연구STUDY OF MULTI-RESOLUTION FLOW SIMULATION METHOD BY DECOMPOSITION PROCESS BASED ON ENO INTERPOLATION
- Other Titles
- STUDY OF MULTI-RESOLUTION FLOW SIMULATION METHOD BY DECOMPOSITION PROCESS BASED ON ENO INTERPOLATION
- Authors
- 이용한; 조태현; 구본찬; 소현규; 김도욱; 이도형
- Issue Date
- Mar-2018
- Publisher
- 한국전산유체공학회
- Keywords
- 다중해상도 기법(Multi-resolution analysis(MRA)); Essentially Non-Oscillation(ENO) interpolation; Subdivision scheme; 압축률(compression rate); 웨이블렛(Wavelets); 전산유체역학(Computational Fluid Dynamics(CFD))
- Citation
- 한국전산유체공학회지, v.23, no.1, pp.68 - 76
- Indexed
- KCI
- Journal Title
- 한국전산유체공학회지
- Volume
- 23
- Number
- 1
- Start Page
- 68
- End Page
- 76
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/7504
- DOI
- 10.6112/kscfe.2018.23.1.068
- ISSN
- 1598-6071
- Abstract
- The improvement of decomposition process using Essentially Non-oscillation Decomposition (ENO) type subdivision scheme on multi-resolution analysis (MRA) based on wavelets basis is studied. The decomposition ability of conventional MRA has a numerical limitation in a flow that involves a shock. ENO interpolation is proposed to improve both decomposition ability and compression rate. The order of subdivision scheme in decomposition process is conserved by changing stencils in the same order. The proposed algorithm is applied to computational flow field around two-dimensional NACA0012 airfoil in subsonic, transonic and supersonic flow regime. Although all cases are improved in terms of compression rate, especially transonic and supersonic cases yield better result than subsonic case. Between transonic and supersonic cases, effects of ENO interpolation are appeared stronger in supersonic case due to the strength of shock. Therefore, it is confirmed that the MRA with ENO-based decomposition could improve the compression rate on flow which is involved a discontinuity.
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