PSI - Issue 47

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 ScienceDirect

www.elsevier.com/locate/procedia

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 47 (2023) 675–684

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the IGF27 chairpersons Abstract Climate and nature strongly influence various sectors of human life on earth. Therefore, the need for renewable energy has received extreme attention to reducing climate change. However, this encounters current turbine blade e ffi ciency challenges, including aerodynamic stall and flow separation. This study investigates the profile of NACA 0015 airfoil blades performed in numerical 3D. The problems in this study were solved by the commercial software ANSYS Fluent. Numerical simulations running under transient conditions are known as the Unsteady Reynolds Averaged Navier-Stokes (URANS) equation. The incoming wind speed is eight m / s with free flow and transient conditions. In general, HEV can increase the torque characteristics produced by the turbine. The variation of the addition of the turbine with the highest power coe ffi cient resulted in a triangular HEV variation that occurred at TSR 2.5 with a Cp value of 0.36, followed by an HEV trapezoidal variation with a Cp value of 0.35. High-E ffi ciency Vortex (HEV) can e ff ectively increase turbine power coe ffi cient and delay flow separation at relatively high TSR. The HEV variation with triangular geometry achieved the highest power coe ffi cient at a TSR of 2.5 with a Cp value of 0.36. This value experienced an increase of 13%. © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the IGF27 chairpersons Keywords: Darrieus H rotor Turbine; High E ffi ciency Vortex; Unsteady Reynolds Averaged Navier Stokes (URANS); Coe ffi cient of Power (Cp); Tip Speed Ratio (TSR) ∗ Corresponding author. Dominicus Danardono Dwi Prija Tjahjana Tel: +62 817-0446-569 E-mail address: ddanardono@sta ff .uns.ac.id Abstract Climate and nature strongly influence various sectors of human life on earth. Therefore, the need for renewable energy has received extreme attention to reducing climate change. However, this encounters current turbine blade e ffi ciency challenges, including aerodynamic stall and flow separation. This study investigates the profile of NACA 0015 airfoil blades performed in numerical 3D. The problems in this study were solved by the commercial software ANSYS Fluent. Numerical simulations running under transient conditions are known as the Unsteady Reynolds Averaged Navier-Stokes (URANS) equation. The incoming wind speed is eight m / s with free flow and transient conditions. In general, HEV can increase the torque characteristics produced by the turbine. The variation of the addition of the turbine with the highest power coe ffi cient resulted in a triangular HEV variation that occurred at TSR 2.5 with a Cp value of 0.36, followed by an HEV trapezoidal variation with a Cp value of 0.35. High-E ffi ciency Vortex (HEV) can e ff ectively increase turbine power coe ffi cient and delay flow separation at relatively high TSR. The HEV variation with triangular geometry achieved the highest power coe ffi cient at a TSR of 2.5 with a Cp value of 0.36. This value experienced an increase of 13%. © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the IGF27 chairpersons Keywords: Darrieus H rotor Turbine; High E ffi ciency Vortex; Unsteady Reynolds Averaged Navier Stokes (URANS); Coe ffi cient of Power (Cp); Tip Speed Ratio (TSR) ∗ Corresponding author. Dominicus Danardono Dwi Prija Tjahjana Tel: +62 817-0446-569 E-mail address: ddanardono@sta ff .uns.ac.id 2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the IGF27 chairpersons 2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the IGF27 chairpersons 27th International Conference on Fracture and Structural Integrity (IGF27) Numerical Study of E ff ect of High E ffi ciency Vortex Addition on Darrieus H Rotor Wind Turbine Performance Bayu Anggara, Dominicus Danardono Dwi Prija Tjahjana*, Eko Prasetya Budiana Mechanical Engineering Department Universitas Sebelas Maret, Jl. Ir Sutami No.36, Kentingan, Kec. Jebres, Kota Surakarta 57126, Indonesia 27th International Conference on Fracture and Structural Integrity (IGF27) Numerical Study of E ff ect of High E ffi ciency Vortex Addition on Darrieus H Rotor Wind Turbine Performance Bayu Anggara, Dominicus Danardono Dwi Prija Tjahjana*, Eko Prasetya Budiana Mechanical Engineering Department Universitas Sebelas Maret, Jl. Ir Sutami No.36, Kentingan, Kec. Jebres, Kota Surakarta 57126, Indonesia

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the IGF27 chairpersons 10.1016/j.prostr.2023.07.053