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2022 Vol.16, Issue 2 Preview Page

Research Article

Independence Test for Particle Intervals in Lagrangian based CFD Using Statistical Analysis

통계분석을 활용한 라그랑지언 기반 전산유체역학의 입자 간격에 대한 독립성 평가

Hyun-Gyu Park1
,
Seong-Hyun Park2
,
Jang-Hoo Seo3*
박 현규1
,
박 성현2
,
서 장후3*
1Graduate Student, Department of Architecture, Graduated School, Kookmin University, Seoul, Korea
2Research Professor, Department of Industry-Academic Cooperation Foundation, Kookmin University, Seoul, Korea
3Professor, School of Architecture, Kookmin University, Seoul, Korea
1국민대학교 일반대학원 건축학과 대학원 과정
2국민대학교 산학협력단 연구교수
3국민대학교 건축학부 교수
*Corresponding Author
30 April 2022. pp. 173-183
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Abstract

With the recent increase in interest in indoor PM and the use of CFD, many studies on indoor PM use CFD. However, in CFD analysis of indoor PM, there is a limit to realizing the same number of particles as in the experiment due to problems of analysis time and physical specifications of the equipment. For this reason, although a limited number of particles is generally used, studies on an appropriate number of particles are scarce. Therefore, in this study, the R2, Cv (RMSE), error rate of the results and analysis time according to intervals of the initial uniformly distributed particle were compared. In the CFD analysis space of 8 m3 volume, the residual particle concentration after 1 hour of ventilation was compared and analyzed. The Case with the IP (Interval of initial particles) of 40 cm also showed a high correlation based on the case with the IP of 2.5 cm. Considering both the analysis time and the reliability of the results, it is judged that the IP of this analysis is 10 to 20 cm appropriate.

Keywords
Particulate Matters (PM)
Computational Fluid Dynamics (CFD)
Independence Test
Interval of Initial Paritlces (IP)
Particle Number
Discrete Phase Model (DPM)
R2
Cv (RMSE)
Error Rate
Time spent for simulation
키워드
입자상 물질
전산유체역학
독립성 평가
초기 분포 입자 간격
입자 수
이상유동모델
결정계수
변동계수
오차율
해석소요시간
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Information
  • Publisher :Korean Institute of Architectural Sustainable Environment and Building Systems
  • Publisher(Ko) :한국건축친환경설비학회
  • Journal Title :Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
  • Journal Title(Ko) :한국건축친환경설비학회논문집
  • Volume : 16
  • No :2
  • Pages :173-183
  • Received Date : 2022-04-06
  • Revised Date : 2022-04-27
  • Accepted Date : 2022-04-28
  • DOI :https://doi.org/10.22696/jkiaebs.20220015
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