Optimization of flanges for diffuser casings of diffuser augmented wind turbines

Ashwini Anand Gaonkar; S. Surya; R. Jayakrishnan

doi:10.1063/5.0024504

Optimization of flanges for diffuser casings of diffuser augmented wind turbines

Ashwini Anand Gaonkar^*
, S. Surya
, R. Jayakrishnan

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Citations (Scopus)

Abstract

Diffuser Augmented Wind Turbines (DAWTs) are used in harnessing of wind energy in a more efficient way compared to the conventional wind turbines. In this article, the mass flow rate through the shroud is increased by the addition of flanges at the aft of the shroud. Using Reynolds Averaged Navier Stokes Equation along with k-ω SST turbulence models, the flow properties through the diffuser is obtained. The modeling of the diffuser was done using a NACA 9415 Airfoil in CATIA and running the simulations in ANSYS FLUENT. Grid Convergence Study was done for these results prior to further analysis. The flange angle and the height along with the open-angle of the diffuser were optimized for maximum mass flow rate through the rotor plane. The performance of the diffuser has been analyzed in terms of the swallowed mass flow rate, pressure variation along the diffuser and velocity at the rotor plane.

Original language	English
Title of host publication	2nd International Conference on Mechanical Materials and Renewable Energy, ICMMRE 2019
Editors	Xiao-Zhi Gao, Ranjan Kumar Ghadai, Kana Kalita, Ishwer Shivakoti, Erol Kilickap, Tanmoy Kundu, Soham Das
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735440036
DOIs	https://doi.org/10.1063/5.0024504
Publication status	Published - 02-11-2020
Event	2nd International Conference on Mechanical Materials and Renewable Energy, ICMMRE 2019 - East Sikkim, India Duration: 06-12-2019 → 07-12-2019

Publication series

Name	AIP Conference Proceedings
Volume	2273
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	2nd International Conference on Mechanical Materials and Renewable Energy, ICMMRE 2019
Country/Territory	India
City	East Sikkim
Period	06-12-19 → 07-12-19

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

Access to Document

10.1063/5.0024504

Cite this

Gaonkar, A. A., Surya, S., & Jayakrishnan, R. (2020). Optimization of flanges for diffuser casings of diffuser augmented wind turbines. In X.-Z. Gao, R. K. Ghadai, K. Kalita, I. Shivakoti, E. Kilickap, T. Kundu, & S. Das (Eds.), 2nd International Conference on Mechanical Materials and Renewable Energy, ICMMRE 2019 Article 050040 (AIP Conference Proceedings; Vol. 2273). American Institute of Physics Inc.. https://doi.org/10.1063/5.0024504

Gaonkar, Ashwini Anand ; Surya, S. ; Jayakrishnan, R. / Optimization of flanges for diffuser casings of diffuser augmented wind turbines. 2nd International Conference on Mechanical Materials and Renewable Energy, ICMMRE 2019. editor / Xiao-Zhi Gao ; Ranjan Kumar Ghadai ; Kana Kalita ; Ishwer Shivakoti ; Erol Kilickap ; Tanmoy Kundu ; Soham Das. American Institute of Physics Inc., 2020. (AIP Conference Proceedings).

@inproceedings{d42ae65c8aa84d6abeaddf051040fb97,

title = "Optimization of flanges for diffuser casings of diffuser augmented wind turbines",

abstract = "Diffuser Augmented Wind Turbines (DAWTs) are used in harnessing of wind energy in a more efficient way compared to the conventional wind turbines. In this article, the mass flow rate through the shroud is increased by the addition of flanges at the aft of the shroud. Using Reynolds Averaged Navier Stokes Equation along with k-ω SST turbulence models, the flow properties through the diffuser is obtained. The modeling of the diffuser was done using a NACA 9415 Airfoil in CATIA and running the simulations in ANSYS FLUENT. Grid Convergence Study was done for these results prior to further analysis. The flange angle and the height along with the open-angle of the diffuser were optimized for maximum mass flow rate through the rotor plane. The performance of the diffuser has been analyzed in terms of the swallowed mass flow rate, pressure variation along the diffuser and velocity at the rotor plane. ",

author = "Gaonkar, \{Ashwini Anand\} and S. Surya and R. Jayakrishnan",

note = "Publisher Copyright: {\textcopyright} 2020 Author(s).; 2nd International Conference on Mechanical Materials and Renewable Energy, ICMMRE 2019 ; Conference date: 06-12-2019 Through 07-12-2019",

year = "2020",

month = nov,

day = "2",

doi = "10.1063/5.0024504",

language = "English",

series = "AIP Conference Proceedings",

publisher = "American Institute of Physics Inc.",

editor = "Xiao-Zhi Gao and Ghadai, \{Ranjan Kumar\} and Kana Kalita and Ishwer Shivakoti and Erol Kilickap and Tanmoy Kundu and Soham Das",

booktitle = "2nd International Conference on Mechanical Materials and Renewable Energy, ICMMRE 2019",

}

Gaonkar, AA, Surya, S & Jayakrishnan, R 2020, Optimization of flanges for diffuser casings of diffuser augmented wind turbines. in X-Z Gao, RK Ghadai, K Kalita, I Shivakoti, E Kilickap, T Kundu & S Das (eds), 2nd International Conference on Mechanical Materials and Renewable Energy, ICMMRE 2019., 050040, AIP Conference Proceedings, vol. 2273, American Institute of Physics Inc., 2nd International Conference on Mechanical Materials and Renewable Energy, ICMMRE 2019, East Sikkim, India, 06-12-19. https://doi.org/10.1063/5.0024504

Optimization of flanges for diffuser casings of diffuser augmented wind turbines. / Gaonkar, Ashwini Anand; Surya, S.; Jayakrishnan, R.
2nd International Conference on Mechanical Materials and Renewable Energy, ICMMRE 2019. ed. / Xiao-Zhi Gao; Ranjan Kumar Ghadai; Kana Kalita; Ishwer Shivakoti; Erol Kilickap; Tanmoy Kundu; Soham Das. American Institute of Physics Inc., 2020. 050040 (AIP Conference Proceedings; Vol. 2273).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Optimization of flanges for diffuser casings of diffuser augmented wind turbines

AU - Gaonkar, Ashwini Anand

AU - Surya, S.

AU - Jayakrishnan, R.

PY - 2020/11/2

Y1 - 2020/11/2

N2 - Diffuser Augmented Wind Turbines (DAWTs) are used in harnessing of wind energy in a more efficient way compared to the conventional wind turbines. In this article, the mass flow rate through the shroud is increased by the addition of flanges at the aft of the shroud. Using Reynolds Averaged Navier Stokes Equation along with k-ω SST turbulence models, the flow properties through the diffuser is obtained. The modeling of the diffuser was done using a NACA 9415 Airfoil in CATIA and running the simulations in ANSYS FLUENT. Grid Convergence Study was done for these results prior to further analysis. The flange angle and the height along with the open-angle of the diffuser were optimized for maximum mass flow rate through the rotor plane. The performance of the diffuser has been analyzed in terms of the swallowed mass flow rate, pressure variation along the diffuser and velocity at the rotor plane.

AB - Diffuser Augmented Wind Turbines (DAWTs) are used in harnessing of wind energy in a more efficient way compared to the conventional wind turbines. In this article, the mass flow rate through the shroud is increased by the addition of flanges at the aft of the shroud. Using Reynolds Averaged Navier Stokes Equation along with k-ω SST turbulence models, the flow properties through the diffuser is obtained. The modeling of the diffuser was done using a NACA 9415 Airfoil in CATIA and running the simulations in ANSYS FLUENT. Grid Convergence Study was done for these results prior to further analysis. The flange angle and the height along with the open-angle of the diffuser were optimized for maximum mass flow rate through the rotor plane. The performance of the diffuser has been analyzed in terms of the swallowed mass flow rate, pressure variation along the diffuser and velocity at the rotor plane.

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M3 - Conference contribution

AN - SCOPUS:85096518934

T3 - AIP Conference Proceedings

BT - 2nd International Conference on Mechanical Materials and Renewable Energy, ICMMRE 2019

A2 - Gao, Xiao-Zhi

A2 - Ghadai, Ranjan Kumar

A2 - Kalita, Kana

A2 - Shivakoti, Ishwer

A2 - Kilickap, Erol

A2 - Kundu, Tanmoy

A2 - Das, Soham

PB - American Institute of Physics Inc.

T2 - 2nd International Conference on Mechanical Materials and Renewable Energy, ICMMRE 2019

Y2 - 6 December 2019 through 7 December 2019

ER -

Gaonkar AA, Surya S, Jayakrishnan R. Optimization of flanges for diffuser casings of diffuser augmented wind turbines. In Gao XZ, Ghadai RK, Kalita K, Shivakoti I, Kilickap E, Kundu T, Das S, editors, 2nd International Conference on Mechanical Materials and Renewable Energy, ICMMRE 2019. American Institute of Physics Inc. 2020. 050040. (AIP Conference Proceedings). doi: 10.1063/5.0024504

Optimization of flanges for diffuser casings of diffuser augmented wind turbines

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