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논문 기본 정보

자료유형
학술저널
저자정보
김동건 (LIG넥스원) 권구용 (LIG넥스원) 장현성 (LIG넥스원) 하남구 (LIG넥스원) 송치오 (KCEI)
저널정보
한국전산유체공학회 한국전산유체공학회지 한국전산유체공학회지 제24권 제4호
발행연도
2019.12
수록면
54 - 59 (6page)
DOI
10.6112/kscfe.2019.24.4.054

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초록· 키워드

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IR signals are divided into self-emitted radiation, surface reflection and path radiation components. A self-emitted radiation is due to temperature and emissivity of the object surface, and it accounts for the highest proportion of the total IR signals. Therefore, in order to predict the IR signals of objects precisely, it must be preceded by an accurate calculation of the surface temperature. In the process of calculating surface temperature, it is important to evaluate the radiative heat transfer including the view factor between the object surfaces. The calculation of view factor requires the process of determining the geometry between meshes on the object surface and subdividing meshes, which needs a lot of computational time. In ordinary cases, accuracy and calculation time have conflicting relationships. To overcome these limitations, various studies show that the ray tracing is being applied to the view factor calculation. In this paper, an estimation method of the view factor calculation using the voxel-based ray tracing technique that had some strategies (hierarchical bounding volumes and space partitioning) to reduce computational expense. By applying this method, the view factor results show acceptable accuracy compared to the results of the commercial S/W, and the calculation time is also less than the results applied the traditional method of performing calculations sequentially. This advantage can be more pronounced as the nimber of meshes increases.

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3. 적용 조건 및 결과 분석
4. 결론
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