An efficient large-eddy simulation (LES) approach is investigated for laminar-to-turbulent transition in boundary layers. This approach incorporates the boundary-layer stability theory. Primary instability and subharmonic perturbations determined by the boundary-layer stability theory are assigned as forcing at the inlet of the LES computational domain. This LES approach reproduces the spatial development of instabilities in the boundary layer, as observed in wind tunnel experiments. Detailed linear growth and nonlinear interactions that lead to the H-type breakdown are well captured and compared well to previous direct numerical simulation (DNS). Requirements in the spatial resolution in the transition region are investigated with connections to the resolution in turbulent boundary layers. It is shown that the subgrid model used in this study is apparently dormant in the overall transitional region, allowing the right level of the growth of small-amplitude instabilities and their nonlinear interactions. The subgrid model becomes active near the end of the transition where the length scales of high-order instabilities become smaller in size compared to the given grid resolution. Current results demonstrate the benefit of the boundary-layer forcing method for the computational cost reduction.
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November 2018
Research-Article
Toward Cost-Effective Boundary Layer Transition Computations With Large-Eddy Simulation
Solkeun Jee,
Solkeun Jee
School of Mechanical Engineering,
Gwangju Institute of Science
and Technology (GIST),
123 Cheomdan-gwagi-ro, Buk-gu,
Gwangju 61005, South Korea
e-mail: sjee@gist.ac.kr
Gwangju Institute of Science
and Technology (GIST),
123 Cheomdan-gwagi-ro, Buk-gu,
Gwangju 61005, South Korea
e-mail: sjee@gist.ac.kr
Search for other works by this author on:
Jongwook Joo,
Jongwook Joo
United Technologies Research Center (UTRC),
411 Silver Lane,
East Hartford, CT 06108
e-mails: jooj@utrc.utc.com;
jw.joo@samsung.com
411 Silver Lane,
East Hartford, CT 06108
e-mails: jooj@utrc.utc.com;
jw.joo@samsung.com
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Ray-Sing Lin
Ray-Sing Lin
United Technologies Research Center (UTRC),
411 Silver Lane,
East Hartford, CT 06108
e-mails: linr@utrc.utc.com;
ray_sing@hotmail.com
411 Silver Lane,
East Hartford, CT 06108
e-mails: linr@utrc.utc.com;
ray_sing@hotmail.com
Search for other works by this author on:
Solkeun Jee
School of Mechanical Engineering,
Gwangju Institute of Science
and Technology (GIST),
123 Cheomdan-gwagi-ro, Buk-gu,
Gwangju 61005, South Korea
e-mail: sjee@gist.ac.kr
Gwangju Institute of Science
and Technology (GIST),
123 Cheomdan-gwagi-ro, Buk-gu,
Gwangju 61005, South Korea
e-mail: sjee@gist.ac.kr
Jongwook Joo
United Technologies Research Center (UTRC),
411 Silver Lane,
East Hartford, CT 06108
e-mails: jooj@utrc.utc.com;
jw.joo@samsung.com
411 Silver Lane,
East Hartford, CT 06108
e-mails: jooj@utrc.utc.com;
jw.joo@samsung.com
Ray-Sing Lin
United Technologies Research Center (UTRC),
411 Silver Lane,
East Hartford, CT 06108
e-mails: linr@utrc.utc.com;
ray_sing@hotmail.com
411 Silver Lane,
East Hartford, CT 06108
e-mails: linr@utrc.utc.com;
ray_sing@hotmail.com
1Corresponding author.
2Present address: Samsung Electronics, 129 Samsung-ro, Yeongtong-gu, Suwon-si 16677, Gyeonggi-do, South Korea.
3Present address: Reliable Solutions Corporation, 49 Bayberry Road, Glastonbury, CT 06033.
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received November 26, 2017; final manuscript received March 6, 2018; published online May 18, 2018. Assoc. Editor: Praveen Ramaprabhu.
J. Fluids Eng. Nov 2018, 140(11): 111201 (12 pages)
Published Online: May 18, 2018
Article history
Received:
November 26, 2017
Revised:
March 6, 2018
Citation
Jee, S., Joo, J., and Lin, R. (May 18, 2018). "Toward Cost-Effective Boundary Layer Transition Computations With Large-Eddy Simulation." ASME. J. Fluids Eng. November 2018; 140(11): 111201. https://doi.org/10.1115/1.4039865
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