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Numerical Investigation of the Wake Vortex-Related Flow Mechanisms in Transonic Turbines
Joint Authors
Wang, Guoliang
Ge, Ning
Zhong, Dongdong
Source
International Journal of Aerospace Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-18, 18 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-08-01
Country of Publication
Egypt
No. of Pages
18
Abstract EN
As the core equipment of the power generation system, a gas turbine is an indispensable energy-converting device in the national industry.
The flow inside a high-pressure turbine (HPT) is highly unsteady, which has a great influence on the aerothermal performance and structural strength.
To better clarify the flow mechanism and guide the advanced design, the basic flow characteristics of transonic turbines are investigated in the paper by a modified scale-adaptive simulation (SAS) model based on the shear stress transport (SST) turbulence model.
The numerical results reveal the formation and development of the secondary flow structures such as wake vortex, pressure wave, shock wave, and the interactions among them.
The length and frequency characteristics of wake are in good agreement with the large eddy simulation (LES) and the experimental data.
Based on the detailed flow information, the local loss analysis is performed using the entropy generation rate.
In summary, the wake vortex-related flow is the main origin of unsteadiness and entropy loss in high-pressure turbine cascade.
American Psychological Association (APA)
Wang, Guoliang& Ge, Ning& Zhong, Dongdong. 2020. Numerical Investigation of the Wake Vortex-Related Flow Mechanisms in Transonic Turbines. International Journal of Aerospace Engineering،Vol. 2020, no. 2020, pp.1-18.
https://search.emarefa.net/detail/BIM-1168305
Modern Language Association (MLA)
Wang, Guoliang…[et al.]. Numerical Investigation of the Wake Vortex-Related Flow Mechanisms in Transonic Turbines. International Journal of Aerospace Engineering No. 2020 (2020), pp.1-18.
https://search.emarefa.net/detail/BIM-1168305
American Medical Association (AMA)
Wang, Guoliang& Ge, Ning& Zhong, Dongdong. Numerical Investigation of the Wake Vortex-Related Flow Mechanisms in Transonic Turbines. International Journal of Aerospace Engineering. 2020. Vol. 2020, no. 2020, pp.1-18.
https://search.emarefa.net/detail/BIM-1168305
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1168305