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Effect of sine-squared thermal boundary condition on augmentation of heat transfer in a triangular solar collector filled with different nanofluids

Numerical study of heat transfer phenomena has become a major field of research nowadays. In engineering applications, different boundary conditions arise which have various effects on heat transfer characteristics. For the present work, a triangular-shape cavity has been analyzed for the sine-squar...

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Main Authors: Rahman, M.M., Saha, S., Mojumder, S., Naim, A.G., Saidur, R., Ibrahim, T.A.
Format: Article
Language:English
Published: TAYLOR & FRANCIS INC, 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA 2015
Subjects:
T Technology (General)
TJ Mechanical engineering and machinery
Online Access:http://eprints.um.edu.my/15849/1/Effect_of_Sine-Squared_Thermal_Boundary_Condition_on_Augmentation_of_Heat_Transfer.pdf
http://eprints.um.edu.my/15849/
http://www.tandfonline.com/doi/pdf/10.1080/10407790.2014.992058
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spelling my.um.eprints.158492016-04-25T03:21:52Z http://eprints.um.edu.my/15849/ Effect of sine-squared thermal boundary condition on augmentation of heat transfer in a triangular solar collector filled with different nanofluids Rahman, M.M. Saha, S. Mojumder, S. Naim, A.G. Saidur, R. Ibrahim, T.A. T Technology (General) TJ Mechanical engineering and machinery Numerical study of heat transfer phenomena has become a major field of research nowadays. In engineering applications, different boundary conditions arise which have various effects on heat transfer characteristics. For the present work, a triangular-shape cavity has been analyzed for the sine-squared thermal boundary condition which is common in practical cases. The augmentation of heat transfer has been done by introducing a nanofluid inside the cavity. Different solid volume fractions (phi=0, 0.05, 0.1, 0.2) of water-CuO, water-Al2O3, and water-TiO2 nanofluid have been tested for the cavity with a wide range of Rayleigh number (Ra=10(5)-10(8)) and for dimensionless time (tau=0.1 to 1). The Galerkin weighted residual finite-element method has been applied for the numerical solution, and numerical accuracy has been checked by code validation. The heat transfer augmentation for different nanofluids has been done in the light of local (Nu(L)) and overall Nusselt number (Nu(av)), and the results have been presented with streamline, isotherm, and related contours, in graphs and charts. It has been found that variable boundary condition has significant effect on flow and thermal fields and increase of solid volume fraction enhances the heat transfer. TAYLOR & FRANCIS INC, 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA 2015-07-03 Article PeerReviewed application/pdf en http://eprints.um.edu.my/15849/1/Effect_of_Sine-Squared_Thermal_Boundary_Condition_on_Augmentation_of_Heat_Transfer.pdf Rahman, M.M. and Saha, S. and Mojumder, S. and Naim, A.G. and Saidur, R. and Ibrahim, T.A. (2015) Effect of sine-squared thermal boundary condition on augmentation of heat transfer in a triangular solar collector filled with different nanofluids. Numerical Heat Transfer Part B-Fundamentals, 68 (1). pp. 53-74. ISSN 1040-7790 http://www.tandfonline.com/doi/pdf/10.1080/10407790.2014.992058 10.1080/10407790.2014.992058
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
language English
topic T Technology (General)
TJ Mechanical engineering and machinery
spellingShingle T Technology (General)
TJ Mechanical engineering and machinery
Rahman, M.M.
Saha, S.
Mojumder, S.
Naim, A.G.
Saidur, R.
Ibrahim, T.A.
Effect of sine-squared thermal boundary condition on augmentation of heat transfer in a triangular solar collector filled with different nanofluids
description Numerical study of heat transfer phenomena has become a major field of research nowadays. In engineering applications, different boundary conditions arise which have various effects on heat transfer characteristics. For the present work, a triangular-shape cavity has been analyzed for the sine-squared thermal boundary condition which is common in practical cases. The augmentation of heat transfer has been done by introducing a nanofluid inside the cavity. Different solid volume fractions (phi=0, 0.05, 0.1, 0.2) of water-CuO, water-Al2O3, and water-TiO2 nanofluid have been tested for the cavity with a wide range of Rayleigh number (Ra=10(5)-10(8)) and for dimensionless time (tau=0.1 to 1). The Galerkin weighted residual finite-element method has been applied for the numerical solution, and numerical accuracy has been checked by code validation. The heat transfer augmentation for different nanofluids has been done in the light of local (Nu(L)) and overall Nusselt number (Nu(av)), and the results have been presented with streamline, isotherm, and related contours, in graphs and charts. It has been found that variable boundary condition has significant effect on flow and thermal fields and increase of solid volume fraction enhances the heat transfer.
format Article
author Rahman, M.M.
Saha, S.
Mojumder, S.
Naim, A.G.
Saidur, R.
Ibrahim, T.A.
author_facet Rahman, M.M.
Saha, S.
Mojumder, S.
Naim, A.G.
Saidur, R.
Ibrahim, T.A.
author_sort Rahman, M.M.
title Effect of sine-squared thermal boundary condition on augmentation of heat transfer in a triangular solar collector filled with different nanofluids
title_short Effect of sine-squared thermal boundary condition on augmentation of heat transfer in a triangular solar collector filled with different nanofluids
title_full Effect of sine-squared thermal boundary condition on augmentation of heat transfer in a triangular solar collector filled with different nanofluids
title_fullStr Effect of sine-squared thermal boundary condition on augmentation of heat transfer in a triangular solar collector filled with different nanofluids
title_full_unstemmed Effect of sine-squared thermal boundary condition on augmentation of heat transfer in a triangular solar collector filled with different nanofluids
title_sort effect of sine-squared thermal boundary condition on augmentation of heat transfer in a triangular solar collector filled with different nanofluids
publisher TAYLOR & FRANCIS INC, 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
publishDate 2015
url http://eprints.um.edu.my/15849/1/Effect_of_Sine-Squared_Thermal_Boundary_Condition_on_Augmentation_of_Heat_Transfer.pdf
http://eprints.um.edu.my/15849/
http://www.tandfonline.com/doi/pdf/10.1080/10407790.2014.992058
_version_ 1643690149872140288
score 13.211869

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