Numerical Analysis of Double Diffusive Laminar Natural Convection in a Right Angle Triangular Solar Collector

A numerical study of the double-diffusive laminar natural convection in a right triangular solar collector has been investigated in present work. The base (absorber) and glass cover of the collector are isothermal and isoconcentration surfaces, while the vertical wall is considered adiabatic and im...

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Autores principales:	Jasim M. Mahdi, Ali M. Rasham, Thamir H. Ali H. Thamir H. Ali
Formato:	article
Lenguaje:	EN
Publicado:	Al-Khwarizmi College of Engineering – University of Baghdad 2013
Materias:	double diffusion heat and mass transfer laminar natural convection solar collector Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/e44dd1999d894e12a65b3d6fa9f6e129
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spelling	oai:doaj.org-article:e44dd1999d894e12a65b3d6fa9f6e1292021-12-02T04:42:06ZNumerical Analysis of Double Diffusive Laminar Natural Convection in a Right Angle Triangular Solar Collector1818-11712312-0789https://doaj.org/article/e44dd1999d894e12a65b3d6fa9f6e1292013-12-01T00:00:00Zhttp://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/186https://doaj.org/toc/1818-1171https://doaj.org/toc/2312-0789 A numerical study of the double-diffusive laminar natural convection in a right triangular solar collector has been investigated in present work. The base (absorber) and glass cover of the collector are isothermal and isoconcentration surfaces, while the vertical wall is considered adiabatic and impermeable. Both aiding and opposing buoyancy forces have been studied. Governing equations in vorticity-stream function form are discretized via finite-difference method and are solved numerically by iterative successive under relaxation (SUR) technique. Computer code for MATLAB software has been developed and written to solve mathematical model. Results in the form of streamlines, isotherms, isoconcentration, average Nusselt, and average Sherwood number, are presented for wide range of the buoyancy ratio , angle of inclined glass cover with horizontal coordinate , Lewis number , thermal Rayleigh number , and Prandtl number . The results show that above parameters have strong influences on the patterns of streamline, isotherms, isoconcentration, average Nusselt number and average Sherwood number. Results show that a decrease in the angle of inclined glass cover with horizontal coordinate ( leads to increase average Nusselt number and average Sherwood number. For (N > 0), both average Nusselt number and average Sherwood number increase with increasing of buoyancy ratio and Rayleigh number. By contrast for ( these values decreases. Also, increasing of the buoyancy ratio for positive (N > 0), at the same Rayleigh number enhance the heat and mass transfer rate. A comparison is made with the previous numerical results and it found to be reveal a good agreement. Jasim M. MahdiAli M. RashamThamir H. Ali H. Thamir H. AliAl-Khwarizmi College of Engineering – University of Baghdadarticledouble diffusionheat and mass transferlaminar natural convectionsolar collectorChemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 9, Iss 4 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	double diffusion heat and mass transfer laminar natural convection solar collector Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	double diffusion heat and mass transfer laminar natural convection solar collector Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 Jasim M. Mahdi Ali M. Rasham Thamir H. Ali H. Thamir H. Ali Numerical Analysis of Double Diffusive Laminar Natural Convection in a Right Angle Triangular Solar Collector
description	A numerical study of the double-diffusive laminar natural convection in a right triangular solar collector has been investigated in present work. The base (absorber) and glass cover of the collector are isothermal and isoconcentration surfaces, while the vertical wall is considered adiabatic and impermeable. Both aiding and opposing buoyancy forces have been studied. Governing equations in vorticity-stream function form are discretized via finite-difference method and are solved numerically by iterative successive under relaxation (SUR) technique. Computer code for MATLAB software has been developed and written to solve mathematical model. Results in the form of streamlines, isotherms, isoconcentration, average Nusselt, and average Sherwood number, are presented for wide range of the buoyancy ratio , angle of inclined glass cover with horizontal coordinate , Lewis number , thermal Rayleigh number , and Prandtl number . The results show that above parameters have strong influences on the patterns of streamline, isotherms, isoconcentration, average Nusselt number and average Sherwood number. Results show that a decrease in the angle of inclined glass cover with horizontal coordinate ( leads to increase average Nusselt number and average Sherwood number. For (N > 0), both average Nusselt number and average Sherwood number increase with increasing of buoyancy ratio and Rayleigh number. By contrast for ( these values decreases. Also, increasing of the buoyancy ratio for positive (N > 0), at the same Rayleigh number enhance the heat and mass transfer rate. A comparison is made with the previous numerical results and it found to be reveal a good agreement.
format	article
author	Jasim M. Mahdi Ali M. Rasham Thamir H. Ali H. Thamir H. Ali
author_facet	Jasim M. Mahdi Ali M. Rasham Thamir H. Ali H. Thamir H. Ali
author_sort	Jasim M. Mahdi
title	Numerical Analysis of Double Diffusive Laminar Natural Convection in a Right Angle Triangular Solar Collector
title_short	Numerical Analysis of Double Diffusive Laminar Natural Convection in a Right Angle Triangular Solar Collector
title_full	Numerical Analysis of Double Diffusive Laminar Natural Convection in a Right Angle Triangular Solar Collector
title_fullStr	Numerical Analysis of Double Diffusive Laminar Natural Convection in a Right Angle Triangular Solar Collector
title_full_unstemmed	Numerical Analysis of Double Diffusive Laminar Natural Convection in a Right Angle Triangular Solar Collector
title_sort	numerical analysis of double diffusive laminar natural convection in a right angle triangular solar collector
publisher	Al-Khwarizmi College of Engineering – University of Baghdad
publishDate	2013
url	https://doaj.org/article/e44dd1999d894e12a65b3d6fa9f6e129
work_keys_str_mv	AT jasimmmahdi numericalanalysisofdoublediffusivelaminarnaturalconvectioninarightangletriangularsolarcollector AT alimrasham numericalanalysisofdoublediffusivelaminarnaturalconvectioninarightangletriangularsolarcollector AT thamirhalihthamirhali numericalanalysisofdoublediffusivelaminarnaturalconvectioninarightangletriangularsolarcollector
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Numerical Analysis of Double Diffusive Laminar Natural Convection in a Right Angle Triangular Solar Collector

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