Numerical analysis of effects of leading-edge protuberances at low reynolds number

Ming Zhao; Mingming Zhang; Jianzhong Xu

Numerical analysis of effects of leading-edge protuberances at low reynolds number

Ming Zhao
, Mingming Zhang
, Jianzhong Xu

CAS - Institute of Engineering Thermophysics

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

3 Scopus citations

Abstract

This paper presents a numerical investigation of the aerodynamic performance of an airfoil with leading-edge protuberances within stall region at Reynolds number of 2 × 10⁵. An IDDES (Improved Delayed Detached Eddy Simulation) method was developed based on a transition model through the modification of turbulence length and the limitation of intermittency factor and validated through quantitative comparison with experimental results. Utilizing the developed method, the vortex evolution and thus the physics of the dominant bi-periodic phenomenon were uncovered. In addition, the effects of bi-periodic flow patterns on aerodynamic forces were also investigated. It was found that bi-periodic phenomenon deteriorated the aerodynamic performance by the inducement of massive flow separation at leading edge. Moreover, the variations in the flow patterns led to little change in total lift coefficient around stall region.

Original language	English
Title of host publication	European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings
Editors	Sandrine Aubrun, Sandrine Aubrun, Jakob Mann
Publisher	European Wind Energy Association
Pages	64-68
Number of pages	5
ISBN (Electronic)	9782930670003
State	Published - 2015
Externally published	Yes
Event	European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Paris, France Duration: 17 Nov 2015 → 20 Nov 2015

Publication series

Name	European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings

Conference

Conference	European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015
Country/Territory	France
City	Paris
Period	17/11/15 → 20/11/15

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Biperiodic phenomenon
CFD
DES method
Flow control

Cite this

Zhao, M., Zhang, M., & Xu, J. (2015). Numerical analysis of effects of leading-edge protuberances at low reynolds number. In S. Aubrun, S. Aubrun, & J. Mann (Eds.), European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings (pp. 64-68). (European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings). European Wind Energy Association.

Zhao, Ming ; Zhang, Mingming ; Xu, Jianzhong. / Numerical analysis of effects of leading-edge protuberances at low reynolds number. European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings. editor / Sandrine Aubrun ; Sandrine Aubrun ; Jakob Mann. European Wind Energy Association, 2015. pp. 64-68 (European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings).

@inproceedings{b3ca9f0e2c684f44827212da16072d31,

title = "Numerical analysis of effects of leading-edge protuberances at low reynolds number",

abstract = "This paper presents a numerical investigation of the aerodynamic performance of an airfoil with leading-edge protuberances within stall region at Reynolds number of 2 × 105. An IDDES (Improved Delayed Detached Eddy Simulation) method was developed based on a transition model through the modification of turbulence length and the limitation of intermittency factor and validated through quantitative comparison with experimental results. Utilizing the developed method, the vortex evolution and thus the physics of the dominant bi-periodic phenomenon were uncovered. In addition, the effects of bi-periodic flow patterns on aerodynamic forces were also investigated. It was found that bi-periodic phenomenon deteriorated the aerodynamic performance by the inducement of massive flow separation at leading edge. Moreover, the variations in the flow patterns led to little change in total lift coefficient around stall region.",

keywords = "Biperiodic phenomenon, CFD, DES method, Flow control",

author = "Ming Zhao and Mingming Zhang and Jianzhong Xu",

year = "2015",

language = "英语",

series = "European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings",

publisher = "European Wind Energy Association",

pages = "64--68",

editor = "Sandrine Aubrun and Sandrine Aubrun and Jakob Mann",

booktitle = "European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings",

note = "European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 ; Conference date: 17-11-2015 Through 20-11-2015",

}

Zhao, M, Zhang, M & Xu, J 2015, Numerical analysis of effects of leading-edge protuberances at low reynolds number. in S Aubrun, S Aubrun & J Mann (eds), European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings. European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings, European Wind Energy Association, pp. 64-68, European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015, Paris, France, 17/11/15.

Numerical analysis of effects of leading-edge protuberances at low reynolds number. / Zhao, Ming; Zhang, Mingming; Xu, Jianzhong.
European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings. ed. / Sandrine Aubrun; Sandrine Aubrun; Jakob Mann. European Wind Energy Association, 2015. p. 64-68 (European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings).

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

TY - GEN

T1 - Numerical analysis of effects of leading-edge protuberances at low reynolds number

AU - Zhao, Ming

AU - Zhang, Mingming

AU - Xu, Jianzhong

PY - 2015

Y1 - 2015

N2 - This paper presents a numerical investigation of the aerodynamic performance of an airfoil with leading-edge protuberances within stall region at Reynolds number of 2 × 105. An IDDES (Improved Delayed Detached Eddy Simulation) method was developed based on a transition model through the modification of turbulence length and the limitation of intermittency factor and validated through quantitative comparison with experimental results. Utilizing the developed method, the vortex evolution and thus the physics of the dominant bi-periodic phenomenon were uncovered. In addition, the effects of bi-periodic flow patterns on aerodynamic forces were also investigated. It was found that bi-periodic phenomenon deteriorated the aerodynamic performance by the inducement of massive flow separation at leading edge. Moreover, the variations in the flow patterns led to little change in total lift coefficient around stall region.

AB - This paper presents a numerical investigation of the aerodynamic performance of an airfoil with leading-edge protuberances within stall region at Reynolds number of 2 × 105. An IDDES (Improved Delayed Detached Eddy Simulation) method was developed based on a transition model through the modification of turbulence length and the limitation of intermittency factor and validated through quantitative comparison with experimental results. Utilizing the developed method, the vortex evolution and thus the physics of the dominant bi-periodic phenomenon were uncovered. In addition, the effects of bi-periodic flow patterns on aerodynamic forces were also investigated. It was found that bi-periodic phenomenon deteriorated the aerodynamic performance by the inducement of massive flow separation at leading edge. Moreover, the variations in the flow patterns led to little change in total lift coefficient around stall region.

KW - Biperiodic phenomenon

KW - CFD

KW - DES method

KW - Flow control

UR - https://www.scopus.com/pages/publications/85034261153

M3 - 会议稿件

AN - SCOPUS:85034261153

T3 - European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings

SP - 64

EP - 68

BT - European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings

A2 - Aubrun, Sandrine

A2 - Mann, Jakob

PB - European Wind Energy Association

T2 - European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015

Y2 - 17 November 2015 through 20 November 2015

ER -

Zhao M, Zhang M, Xu J. Numerical analysis of effects of leading-edge protuberances at low reynolds number. In Aubrun S, Aubrun S, Mann J, editors, European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings. European Wind Energy Association. 2015. p. 64-68. (European Wind Energy Association Annual Conference and Exhibition 2015, EWEA 2015 - Scientific Proceedings).

Numerical analysis of effects of leading-edge protuberances at low reynolds number

Abstract

Publication series

Conference

UN SDGs

Keywords

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