Grid Quality Prediction for CFD Model of Buildings using Geometry Characteristic Index

Lee, Min-Hyung, Kim, Chang-Min, Park, Gwan-Yong, Lee, Sun-Woo, Choi, Chang-Ho

doi:https://doi.org/10.22696/jkiaebs.20200049

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2020 Vol.14, Issue 6 Preview Page Next Page

Research Article

Grid Quality Prediction for CFD Model of Buildings using Geometry Characteristic Index 형상 특성 지표를 활용한 건물 CFD 모델의 격자 품질 예측

December 2020. pp. 577-588

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Abstract

In this study, a model for predicting the grid quality of a building CFD model was developed using geometry characteristic index. Inverse topology count, surface area to volume ratio, and shape complexity were used as geometry characteristic index for the prediction of grid quality. Through the case study, geometry characteristic indices were calculated for a total of 37 shapes. The grid quality of each model was extracted. In the case of the inverse topology count, there was a high correlation with the maximum non-orthogonality. Multiple linear regression analysis was performed using the case study results, and a grid quality prediction model was developed through this. Two prediction models were derived for each grid quality, and both were evaluated as statistically significant. In the case of shape complexity, it was not derived as a significant factor in the grid quality prediction model. The adjusted R² of the prediction model for the maximum non-orthogonality, and maximum skewness was derived as 0.738, and 0.806, respectively.

Keywords

Grid quality

Grid

Geometry characteristic index

Multiple regression analysis

Computational fluid dynamics

키워드

격자 품질

격자

형상 특성 지표

다중회귀분석

전산유체역학

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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) :한국건축친환경설비학회 논문집
Volume : 14
No :6
Pages :577-588
Received Date :2020. 10. 30
Revised Date :2020. 11. 09
Accepted Date : 2020. 11. 09
DOI :https://doi.org/https://doi.org/10.22696/jkiaebs.20200049

Journal of Korean Institute of Architectural Sustainable Environment and Building Systems ISSN:1976-6483(Print) 2586-0666(Online) 한국건축친환경설비학회 논문집

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