On the accuracy of uRANS and LES-Based CFD modeling approaches for rotor and wake aerodynamics of the (New) MEXICO wind turbine rotor phase-III
This work presents a comparison study of the CFD modeling with two different turbulence modeling approaches viz. unsteady RANS and LES, on a full-scale model of the (New) MEXICO rotor wind turbine. The main emphasis of the paper is on the rotor and wake aerodynamics. Simulations are carried out for...
Saved in:
Main Authors: | , , |
---|---|
Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2021
|
Subjects: | |
Online Access: | https://hdl.handle.net/10356/153732 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Nanyang Technological University |
Language: | English |
id |
sg-ntu-dr.10356-153732 |
---|---|
record_format |
dspace |
spelling |
sg-ntu-dr.10356-1537322021-12-23T07:00:14Z On the accuracy of uRANS and LES-Based CFD modeling approaches for rotor and wake aerodynamics of the (New) MEXICO wind turbine rotor phase-III Purohit, Shantanu Ijaz Fazil Syed Ahmed Kabir Ng, Eddie Yin Kwee School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Wind Turbine Large Eddy Simulation (LES) This work presents a comparison study of the CFD modeling with two different turbulence modeling approaches viz. unsteady RANS and LES, on a full-scale model of the (New) MEXICO rotor wind turbine. The main emphasis of the paper is on the rotor and wake aerodynamics. Simulations are carried out for the three wind speeds considered in the MEXICO experiment (10, 15, and 24 ms⁻¹ ). The results of uRANS and LES are compared against the (New) MEXICO experimental measurements of pressure distributions, axial, radial, and azimuth traverse of three velocity components. The near wake characteristics and vorticity are also analyzed. The pressure distribution results show that the LES can predict the onset of flow separation more accurately than uRANS when the turbine operates in the stall condition. The LES can compute the flow structures in wake significantly better than the uRANS for the stall condition of the blade. For the design condition, the mean absolute error in axial and radial velocity components along radial traverse is less than 10% for both the modeling approaches, whereas tangential component error is less than 2% from the LES approach. The results also reveal that wake recovers faster in the uRANS approach, requiring further research of the far wake region using both CFD modeling approaches. Published version 2021-12-23T07:00:13Z 2021-12-23T07:00:13Z 2021 Journal Article Purohit, S., Ijaz Fazil Syed Ahmed Kabir & Ng, E. Y. K. (2021). On the accuracy of uRANS and LES-Based CFD modeling approaches for rotor and wake aerodynamics of the (New) MEXICO wind turbine rotor phase-III. Energies, 14(16), 5198-. https://dx.doi.org/10.3390/en14165198 1996-1073 https://hdl.handle.net/10356/153732 10.3390/en14165198 2-s2.0-85113665221 16 14 5198 en Energies © 2021 The Author(s). Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). application/pdf |
institution |
Nanyang Technological University |
building |
NTU Library |
continent |
Asia |
country |
Singapore Singapore |
content_provider |
NTU Library |
collection |
DR-NTU |
language |
English |
topic |
Engineering::Mechanical engineering Wind Turbine Large Eddy Simulation (LES) |
spellingShingle |
Engineering::Mechanical engineering Wind Turbine Large Eddy Simulation (LES) Purohit, Shantanu Ijaz Fazil Syed Ahmed Kabir Ng, Eddie Yin Kwee On the accuracy of uRANS and LES-Based CFD modeling approaches for rotor and wake aerodynamics of the (New) MEXICO wind turbine rotor phase-III |
description |
This work presents a comparison study of the CFD modeling with two different turbulence modeling approaches viz. unsteady RANS and LES, on a full-scale model of the (New) MEXICO rotor wind turbine. The main emphasis of the paper is on the rotor and wake aerodynamics. Simulations are carried out for the three wind speeds considered in the MEXICO experiment (10, 15, and 24 ms⁻¹ ). The results of uRANS and LES are compared against the (New) MEXICO experimental measurements of pressure distributions, axial, radial, and azimuth traverse of three velocity components. The near wake characteristics and vorticity are also analyzed. The pressure distribution results show that the LES can predict the onset of flow separation more accurately than uRANS when the turbine operates in the stall condition. The LES can compute the flow structures in wake significantly better than the uRANS for the stall condition of the blade. For the design condition, the mean absolute error in axial and radial velocity components along radial traverse is less than 10% for both the modeling approaches, whereas tangential component error is less than 2% from the LES approach. The results also reveal that wake recovers faster in the uRANS approach, requiring further research of the far wake region using both CFD modeling approaches. |
author2 |
School of Mechanical and Aerospace Engineering |
author_facet |
School of Mechanical and Aerospace Engineering Purohit, Shantanu Ijaz Fazil Syed Ahmed Kabir Ng, Eddie Yin Kwee |
format |
Article |
author |
Purohit, Shantanu Ijaz Fazil Syed Ahmed Kabir Ng, Eddie Yin Kwee |
author_sort |
Purohit, Shantanu |
title |
On the accuracy of uRANS and LES-Based CFD modeling approaches for rotor and wake aerodynamics of the (New) MEXICO wind turbine rotor phase-III |
title_short |
On the accuracy of uRANS and LES-Based CFD modeling approaches for rotor and wake aerodynamics of the (New) MEXICO wind turbine rotor phase-III |
title_full |
On the accuracy of uRANS and LES-Based CFD modeling approaches for rotor and wake aerodynamics of the (New) MEXICO wind turbine rotor phase-III |
title_fullStr |
On the accuracy of uRANS and LES-Based CFD modeling approaches for rotor and wake aerodynamics of the (New) MEXICO wind turbine rotor phase-III |
title_full_unstemmed |
On the accuracy of uRANS and LES-Based CFD modeling approaches for rotor and wake aerodynamics of the (New) MEXICO wind turbine rotor phase-III |
title_sort |
on the accuracy of urans and les-based cfd modeling approaches for rotor and wake aerodynamics of the (new) mexico wind turbine rotor phase-iii |
publishDate |
2021 |
url |
https://hdl.handle.net/10356/153732 |
_version_ |
1720447172248338432 |