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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국계산역학회 Computers and Concrete, An International Journal Computers and Concrete, An International Journal Vol.18 No.3
- 발행연도
- 2016.1
- 수록면
- 319 - 336 (18page)
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초록· 키워드
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In this study, both two- and three-dimensional (2D and 3D) finite-volume-based models were developed to analyze the heat transfer mechanisms through the porous structures of cellular concretes under steady-state heat transfer conditions and to investigate the differences between the 2D and 3D modeling results. The 2D and 3D reconstructed pore networks were generated from the microstructural information measured by 3D images captured by X-ray computerized tomography (X-CT). The computed effective thermal conductivities based on the 2D and 3D calculations performed on the reconstructed porous structures were found to be nearly identical to those evaluated from the 2D cross-sectional images and the 3D X-CT images, respectively. In addition, the 3D computed effective thermal conductivity was found to agree better with the measured values, in comparison with the 2D reconstruction and real cross-sectional images. Finally, the thermal conductivities computed for different reconstructed porous 3D structures of cellular concretes were compared with those obtained from 2D computations performed on 2D reconstructed structures. This comparison revealed the differences between 2D and 3D image-based modeling. A correlation was thus derived between the results of the 3D and 2D models.
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등록된 정보가 없습니다.
참고문헌 (35)
참고문헌 신청
Ahern, A. / 2005 / The conductivity of foams : a generalisation of the electrical to the thermal case / Colloid Surface A : Physicochem. Eng. Aspects 263:275~279
Aldridge, D. / 2000 / Foamed concrete for highway bridge works, Seminar notes on foamed concrete:properties, applications and potential
Bhattacharya, A. / 2002 / Thermophysical properties of high porosity metal foams / Int. J. Heat Mass Transfer 45(5):1017~1031
Bouvard, D. / 2007 / Characterization and simulation of microstructure and properties of EPS lightweight concrete / Cement and Concrete Res 37(12):1666~1673
Collishaw, P.G / 1994 / An assessment of expressions for the apparent thermal conductivity of cellular materials / J. Mater. Sci 29(9):2261~2273
Aldridge, D. / 2000 / Foamed concrete for highway bridge works, Seminar notes on foamed concrete:properties, applications and potential
Bhattacharya, A. / 2002 / Thermophysical properties of high porosity metal foams / Int. J. Heat Mass Transfer 45(5):1017~1031
Bouvard, D. / 2007 / Characterization and simulation of microstructure and properties of EPS lightweight concrete / Cement and Concrete Res 37(12):1666~1673
Collishaw, P.G / 1994 / An assessment of expressions for the apparent thermal conductivity of cellular materials / J. Mater. Sci 29(9):2261~2273
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