TY - GEN
T1 - Optimization of flanges for diffuser casings of diffuser augmented wind turbines
AU - Gaonkar, Ashwini Anand
AU - Surya, S.
AU - Jayakrishnan, R.
N1 - Publisher Copyright:
© 2020 Author(s).
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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U2 - 10.1063/5.0024504
DO - 10.1063/5.0024504
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 -