Performance Index in MHD Duct Nanofluid Flow Past a Bluff Body at High Re

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SUNIL, Arjun Kozhikkatil;KUMAR, Rakesh .
Performance Index in MHD Duct Nanofluid Flow Past a Bluff Body at High Re. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 63, n.4, p. 235-247, june 2018. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/article/performance-index-in-mhd-duct-nanofluid-flow-past-a-bluff-body-at-high-re/>. Date accessed: 11 dec. 2019. 
doi:http://dx.doi.org/10.5545/sv-jme.2016.4258.
Sunil, A., & Kumar, R.
(2017).
Performance Index in MHD Duct Nanofluid Flow Past a Bluff Body at High Re.
Strojniški vestnik - Journal of Mechanical Engineering, 63(4), 235-247.
doi:http://dx.doi.org/10.5545/sv-jme.2016.4258
@article{sv-jmesv-jme.2016.4258,
	author = {Arjun Kozhikkatil Sunil and Rakesh  Kumar},
	title = {Performance Index in MHD Duct Nanofluid Flow Past a Bluff Body at High Re},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {63},
	number = {4},
	year = {2017},
	keywords = {computational Fluid Dynamics; heat transfer enhancement; bluff body; circular cylinder; magneto hydro-dynamics},
	abstract = {The quasi-two-dimensional Al2O3-water nanofluid magneto hydro-dynamics (MHD) flowing over a circular cylinder at higher Reynolds number has been modelled using Ansys FLUENT 15.0 in a rectangular duct to determine the viability of heat transfer enhancement. The effect of the numerical simulations on performance indices were analysed for the range of 1000 ≤ Re ≤ 3000 Reynolds numbers, 10 ≤ Ha ≤ 100 modified Hartmann numbers, 0.5 ≤ φ ≤ 2 nanoparticle volume concentrations, 0.1 ≤ β ≤ 0.4 blockage ratios, 1 ≤ γ ≤ 0.25 position ratios, 0.75 ≤ G/d ≤ 1.5 gap ratios and 0 ≤ d ≤ 10 distance downstream of cylinder along heated duct wall. The results are presented graphically and discussed quantitatively. Grid independence is achieved with the domain having 3 upstream and 20 downstream cylinder diameter distance lengths with element polynomial degree 7 with respect to mean drag coefficient and Strouhal number. Cylinder placement with gaps to the heated wall of diameters between 0.75 and 1.25 and 10 diameters downstream of cylinder performed best, achieving 117 % enhancement of the performance indices at Re = 3000, Ha = 20, φ = 2 %, β = 0.4, γ = 1 and G/d = 1. The performance indices were greater than one for all the cases tested, which indicates that the heat transfer enhancement for this flow is viable. The Nusselt number values of the present study were compared with the analytical and experimental data published earlier and found to be in perfect agreement validating the reliability of the present model.},
	issn = {0039-2480},	pages = {235-247},	doi = {10.5545/sv-jme.2016.4258},
	url = {https://www.sv-jme.eu/article/performance-index-in-mhd-duct-nanofluid-flow-past-a-bluff-body-at-high-re/}
}
Sunil, A.,Kumar, R.
2017 June 63. Performance Index in MHD Duct Nanofluid Flow Past a Bluff Body at High Re. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 63:4
%A Sunil, Arjun Kozhikkatil
%A Kumar, Rakesh 
%D 2017
%T Performance Index in MHD Duct Nanofluid Flow Past a Bluff Body at High Re
%B 2017
%9 computational Fluid Dynamics; heat transfer enhancement; bluff body; circular cylinder; magneto hydro-dynamics
%! Performance Index in MHD Duct Nanofluid Flow Past a Bluff Body at High Re
%K computational Fluid Dynamics; heat transfer enhancement; bluff body; circular cylinder; magneto hydro-dynamics
%X The quasi-two-dimensional Al2O3-water nanofluid magneto hydro-dynamics (MHD) flowing over a circular cylinder at higher Reynolds number has been modelled using Ansys FLUENT 15.0 in a rectangular duct to determine the viability of heat transfer enhancement. The effect of the numerical simulations on performance indices were analysed for the range of 1000 ≤ Re ≤ 3000 Reynolds numbers, 10 ≤ Ha ≤ 100 modified Hartmann numbers, 0.5 ≤ φ ≤ 2 nanoparticle volume concentrations, 0.1 ≤ β ≤ 0.4 blockage ratios, 1 ≤ γ ≤ 0.25 position ratios, 0.75 ≤ G/d ≤ 1.5 gap ratios and 0 ≤ d ≤ 10 distance downstream of cylinder along heated duct wall. The results are presented graphically and discussed quantitatively. Grid independence is achieved with the domain having 3 upstream and 20 downstream cylinder diameter distance lengths with element polynomial degree 7 with respect to mean drag coefficient and Strouhal number. Cylinder placement with gaps to the heated wall of diameters between 0.75 and 1.25 and 10 diameters downstream of cylinder performed best, achieving 117 % enhancement of the performance indices at Re = 3000, Ha = 20, φ = 2 %, β = 0.4, γ = 1 and G/d = 1. The performance indices were greater than one for all the cases tested, which indicates that the heat transfer enhancement for this flow is viable. The Nusselt number values of the present study were compared with the analytical and experimental data published earlier and found to be in perfect agreement validating the reliability of the present model.
%U https://www.sv-jme.eu/article/performance-index-in-mhd-duct-nanofluid-flow-past-a-bluff-body-at-high-re/
%0 Journal Article
%R 10.5545/sv-jme.2016.4258
%& 235
%P 13
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 63
%N 4
%@ 0039-2480
%8 2018-06-27
%7 2018-06-27
Sunil, Arjun, & Rakesh  Kumar.
"Performance Index in MHD Duct Nanofluid Flow Past a Bluff Body at High Re." Strojniški vestnik - Journal of Mechanical Engineering [Online], 63.4 (2017): 235-247. Web.  11 Dec. 2019
TY  - JOUR
AU  - Sunil, Arjun Kozhikkatil
AU  - Kumar, Rakesh 
PY  - 2017
TI  - Performance Index in MHD Duct Nanofluid Flow Past a Bluff Body at High Re
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2016.4258
KW  - computational Fluid Dynamics; heat transfer enhancement; bluff body; circular cylinder; magneto hydro-dynamics
N2  - The quasi-two-dimensional Al2O3-water nanofluid magneto hydro-dynamics (MHD) flowing over a circular cylinder at higher Reynolds number has been modelled using Ansys FLUENT 15.0 in a rectangular duct to determine the viability of heat transfer enhancement. The effect of the numerical simulations on performance indices were analysed for the range of 1000 ≤ Re ≤ 3000 Reynolds numbers, 10 ≤ Ha ≤ 100 modified Hartmann numbers, 0.5 ≤ φ ≤ 2 nanoparticle volume concentrations, 0.1 ≤ β ≤ 0.4 blockage ratios, 1 ≤ γ ≤ 0.25 position ratios, 0.75 ≤ G/d ≤ 1.5 gap ratios and 0 ≤ d ≤ 10 distance downstream of cylinder along heated duct wall. The results are presented graphically and discussed quantitatively. Grid independence is achieved with the domain having 3 upstream and 20 downstream cylinder diameter distance lengths with element polynomial degree 7 with respect to mean drag coefficient and Strouhal number. Cylinder placement with gaps to the heated wall of diameters between 0.75 and 1.25 and 10 diameters downstream of cylinder performed best, achieving 117 % enhancement of the performance indices at Re = 3000, Ha = 20, φ = 2 %, β = 0.4, γ = 1 and G/d = 1. The performance indices were greater than one for all the cases tested, which indicates that the heat transfer enhancement for this flow is viable. The Nusselt number values of the present study were compared with the analytical and experimental data published earlier and found to be in perfect agreement validating the reliability of the present model.
UR  - https://www.sv-jme.eu/article/performance-index-in-mhd-duct-nanofluid-flow-past-a-bluff-body-at-high-re/
@article{{sv-jme}{sv-jme.2016.4258},
	author = {Sunil, A., Kumar, R.},
	title = {Performance Index in MHD Duct Nanofluid Flow Past a Bluff Body at High Re},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {63},
	number = {4},
	year = {2017},
	doi = {10.5545/sv-jme.2016.4258},
	url = {https://www.sv-jme.eu/article/performance-index-in-mhd-duct-nanofluid-flow-past-a-bluff-body-at-high-re/}
}
TY  - JOUR
AU  - Sunil, Arjun Kozhikkatil
AU  - Kumar, Rakesh 
PY  - 2018/06/27
TI  - Performance Index in MHD Duct Nanofluid Flow Past a Bluff Body at High Re
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 63, No 4 (2017): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2016.4258
KW  - computational Fluid Dynamics, heat transfer enhancement, bluff body, circular cylinder, magneto hydro-dynamics
N2  - The quasi-two-dimensional Al2O3-water nanofluid magneto hydro-dynamics (MHD) flowing over a circular cylinder at higher Reynolds number has been modelled using Ansys FLUENT 15.0 in a rectangular duct to determine the viability of heat transfer enhancement. The effect of the numerical simulations on performance indices were analysed for the range of 1000 ≤ Re ≤ 3000 Reynolds numbers, 10 ≤ Ha ≤ 100 modified Hartmann numbers, 0.5 ≤ φ ≤ 2 nanoparticle volume concentrations, 0.1 ≤ β ≤ 0.4 blockage ratios, 1 ≤ γ ≤ 0.25 position ratios, 0.75 ≤ G/d ≤ 1.5 gap ratios and 0 ≤ d ≤ 10 distance downstream of cylinder along heated duct wall. The results are presented graphically and discussed quantitatively. Grid independence is achieved with the domain having 3 upstream and 20 downstream cylinder diameter distance lengths with element polynomial degree 7 with respect to mean drag coefficient and Strouhal number. Cylinder placement with gaps to the heated wall of diameters between 0.75 and 1.25 and 10 diameters downstream of cylinder performed best, achieving 117 % enhancement of the performance indices at Re = 3000, Ha = 20, φ = 2 %, β = 0.4, γ = 1 and G/d = 1. The performance indices were greater than one for all the cases tested, which indicates that the heat transfer enhancement for this flow is viable. The Nusselt number values of the present study were compared with the analytical and experimental data published earlier and found to be in perfect agreement validating the reliability of the present model.
UR  - https://www.sv-jme.eu/article/performance-index-in-mhd-duct-nanofluid-flow-past-a-bluff-body-at-high-re/
Sunil, Arjun, AND Kumar, Rakesh.
"Performance Index in MHD Duct Nanofluid Flow Past a Bluff Body at High Re" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 63 Number 4 (27 June 2018)

Authors

Affiliations

  • Department of Mechanical Engineering Indian Institute of Technology (ISM), India 1

Paper's information

Strojniški vestnik - Journal of Mechanical Engineering 63(2017)4, 235-247

https://doi.org/10.5545/sv-jme.2016.4258

The quasi-two-dimensional Al2O3-water nanofluid magneto hydro-dynamics (MHD) flowing over a circular cylinder at higher Reynolds number has been modelled using Ansys FLUENT 15.0 in a rectangular duct to determine the viability of heat transfer enhancement. The effect of the numerical simulations on performance indices were analysed for the range of 1000 ≤ Re ≤ 3000 Reynolds numbers, 10 ≤ Ha ≤ 100 modified Hartmann numbers, 0.5 ≤ φ ≤ 2 nanoparticle volume concentrations, 0.1 ≤ β ≤ 0.4 blockage ratios, 1 ≤ γ ≤ 0.25 position ratios, 0.75 ≤ G/d ≤ 1.5 gap ratios and 0 ≤ d ≤ 10 distance downstream of cylinder along heated duct wall. The results are presented graphically and discussed quantitatively. Grid independence is achieved with the domain having 3 upstream and 20 downstream cylinder diameter distance lengths with element polynomial degree 7 with respect to mean drag coefficient and Strouhal number. Cylinder placement with gaps to the heated wall of diameters between 0.75 and 1.25 and 10 diameters downstream of cylinder performed best, achieving 117 % enhancement of the performance indices at Re = 3000, Ha = 20, φ = 2 %, β = 0.4, γ = 1 and G/d = 1. The performance indices were greater than one for all the cases tested, which indicates that the heat transfer enhancement for this flow is viable. The Nusselt number values of the present study were compared with the analytical and experimental data published earlier and found to be in perfect agreement validating the reliability of the present model.

computational Fluid Dynamics; heat transfer enhancement; bluff body; circular cylinder; magneto hydro-dynamics