A passive shock wave control method, using a grooved surface instead of the original smooth surface of a gas turbine nozzle vane to alter a single shock wave into a multiple shock wave structure, is investigated in this paper, so as to gain insight into the flow characteristics of a multiple shock wave system and its variations with various grooved surface geometry parameters. With the combination of numerical and experimental approaches, the shock wave structure and the flow behavior in a linear turbine nozzle channel with different grooved surface configurations were compared and analyzed in details. The numerical and experimental results indicate that the multiple shock wave structure induced by the grooved surface is beneficial for mitigating the intensity of the shock wave, reducing the potential excitation force of the shock wave and decreasing the shock wave loss as well. It was also found that the benefits are related to the geometry of the grooved surface, such as groove width, depth, and number. However, the presence of the grooved surface inevitably causes more viscous boundary layer loss and wake loss, which maybe a bottleneck for general engineering application of such a passive shock wave mitigation method.
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May 2019
Research-Article
Experimental and Numerical Investigation on the Shock Wave Structure Alterations and Available Energy Loss Variations With a Grooved Nozzle Vane
Ben Zhao,
Ben Zhao
School of Mechanical Engineering,
Beijing Institute of Technology,
Beijing 100081, China
Beijing Institute of Technology,
Beijing 100081, China
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Mingxu Qi,
Mingxu Qi
School of Mechanical Engineering,
Beijing Institute of Technology,
Beijing 100081, China
e-mail: qimx@bit.edu.cn
Beijing Institute of Technology,
Beijing 100081, China
e-mail: qimx@bit.edu.cn
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Harold Sun,
Harold Sun
School of Mechanical Engineering,
Beijing Institute of Technology,
Beijing 100081, China
Beijing Institute of Technology,
Beijing 100081, China
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Xin Shi,
Xin Shi
School of Mechanical Engineering,
Beijing Institute of Technology,
Beijing 100081, China
Beijing Institute of Technology,
Beijing 100081, China
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Chaochen Ma
Chaochen Ma
School of Mechanical Engineering,
Beijing Institute of Technology,
Beijing 100081, China
Beijing Institute of Technology,
Beijing 100081, China
Search for other works by this author on:
Ben Zhao
School of Mechanical Engineering,
Beijing Institute of Technology,
Beijing 100081, China
Beijing Institute of Technology,
Beijing 100081, China
Mingxu Qi
School of Mechanical Engineering,
Beijing Institute of Technology,
Beijing 100081, China
e-mail: qimx@bit.edu.cn
Beijing Institute of Technology,
Beijing 100081, China
e-mail: qimx@bit.edu.cn
Harold Sun
School of Mechanical Engineering,
Beijing Institute of Technology,
Beijing 100081, China
Beijing Institute of Technology,
Beijing 100081, China
Xin Shi
School of Mechanical Engineering,
Beijing Institute of Technology,
Beijing 100081, China
Beijing Institute of Technology,
Beijing 100081, China
Chaochen Ma
School of Mechanical Engineering,
Beijing Institute of Technology,
Beijing 100081, China
Beijing Institute of Technology,
Beijing 100081, China
Manuscript received March 19, 2018; final manuscript received October 18, 2018; published online January 21, 2019. Assoc. Editor: John Clark.
J. Turbomach. May 2019, 141(5): 051001 (9 pages)
Published Online: January 21, 2019
Article history
Received:
March 19, 2018
Revised:
October 18, 2018
Citation
Zhao, B., Qi, M., Sun, H., Shi, X., and Ma, C. (January 21, 2019). "Experimental and Numerical Investigation on the Shock Wave Structure Alterations and Available Energy Loss Variations With a Grooved Nozzle Vane." ASME. J. Turbomach. May 2019; 141(5): 051001. https://doi.org/10.1115/1.4041819
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