In this work, the flows inside a high-pressure turbine (HPT) vane and stage are studied with a delayed detached eddy simulation (DDES) code. The fundamental nozzle/blade interaction is investigated with special attention paid to the development and transportation of the vane wake vortices. There are two motivations for this work. First, the extreme HPT operation conditions, including both transonic Mach numbers and high Reynolds numbers, impose a great challenge to modern computational fluid dynamics (CFD), especially for scale-resolved simulation methods. An accurate and efficient high-fidelity CFD solver is very important for a thorough understanding of the flow physics and the design of more efficient HPT. Second, the periodic wake vortex shedding is an important origin of turbine losses and unsteadiness. The wake and vortices not only cause losses themselves, but also interact with the shock wave (under transonic working condition), pressure waves, and have a strong impact on the downstream blade surface (affecting boundary layer transition and heat transfer). Based on one of our previous DDES simulations of a HPT vane, this work further investigates the development and length characteristics of the wake vortices, provides explanations for the length characteristics, and reveals the transportation of the wake vortices in the downstream rotor passages along with its impact on the downstream aero-thermal performance.
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April 2018
Research-Article
DDES Analysis of the Wake Vortex Related Unsteadiness and Losses in the Environment of a High-Pressure Turbine Stage
Dun Lin,
Dun Lin
Mem. ASME
Key Laboratory for Thermal Science and
Power Engineering of Ministry of Education,
Tsinghua University,
Beijing 100084, China
e-mail: lindun91@gmail.com
Key Laboratory for Thermal Science and
Power Engineering of Ministry of Education,
Tsinghua University,
Beijing 100084, China
e-mail: lindun91@gmail.com
Search for other works by this author on:
Xinrong Su,
Xinrong Su
Mem. ASME
Key Laboratory for Thermal Science and
Power Engineering of Ministry of Education,
Tsinghua University,
Beijing 100084, China
e-mail: suxr@mail.tsinghua.edu.cn
Key Laboratory for Thermal Science and
Power Engineering of Ministry of Education,
Tsinghua University,
Beijing 100084, China
e-mail: suxr@mail.tsinghua.edu.cn
Search for other works by this author on:
Xin Yuan
Xin Yuan
Professor
Mem. ASME
Key Laboratory for Thermal Science and
Power Engineering of Ministry of Education,
Tsinghua University,
Beijing 100084, China
e-mail: yuanxin@mail.tsinghua.edu.cn
Mem. ASME
Key Laboratory for Thermal Science and
Power Engineering of Ministry of Education,
Tsinghua University,
Beijing 100084, China
e-mail: yuanxin@mail.tsinghua.edu.cn
Search for other works by this author on:
Dun Lin
Mem. ASME
Key Laboratory for Thermal Science and
Power Engineering of Ministry of Education,
Tsinghua University,
Beijing 100084, China
e-mail: lindun91@gmail.com
Key Laboratory for Thermal Science and
Power Engineering of Ministry of Education,
Tsinghua University,
Beijing 100084, China
e-mail: lindun91@gmail.com
Xinrong Su
Mem. ASME
Key Laboratory for Thermal Science and
Power Engineering of Ministry of Education,
Tsinghua University,
Beijing 100084, China
e-mail: suxr@mail.tsinghua.edu.cn
Key Laboratory for Thermal Science and
Power Engineering of Ministry of Education,
Tsinghua University,
Beijing 100084, China
e-mail: suxr@mail.tsinghua.edu.cn
Xin Yuan
Professor
Mem. ASME
Key Laboratory for Thermal Science and
Power Engineering of Ministry of Education,
Tsinghua University,
Beijing 100084, China
e-mail: yuanxin@mail.tsinghua.edu.cn
Mem. ASME
Key Laboratory for Thermal Science and
Power Engineering of Ministry of Education,
Tsinghua University,
Beijing 100084, China
e-mail: yuanxin@mail.tsinghua.edu.cn
1Corresponding author.
Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the JOURNAL OF TURBOMACHINERY. Manuscript received August 23, 2017; final manuscript received November 17, 2017; published online January 3, 2018. Editor: Kenneth Hall.
J. Turbomach. Apr 2018, 140(4): 041001 (12 pages)
Published Online: January 3, 2018
Article history
Received:
August 23, 2017
Revised:
November 17, 2017
Citation
Lin, D., Su, X., and Yuan, X. (January 3, 2018). "DDES Analysis of the Wake Vortex Related Unsteadiness and Losses in the Environment of a High-Pressure Turbine Stage." ASME. J. Turbomach. April 2018; 140(4): 041001. https://doi.org/10.1115/1.4038736
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