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TECHNICAL PAPERS

Boundary Layer Transition Induced by Periodic Wakes

[+] Author and Article Information
Xiaohua Wu, Paul A. Durbin

Center for Integrated Turbulence Simulation and Department of Mechanical Engineering, Stanford University, Building 500, Stanford, CA 94305-3030

J. Turbomach 122(3), 442-449 (Nov 01, 1998) (8 pages) doi:10.1115/1.1303076 History: Received November 01, 1998
Copyright © 2000 by ASME
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References

Figures

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(a) Layout in the experiments of Liu and Rodi 10; (b) layout in the present numerical simulation; the computational domain is defined as 0.1≤x/L≤3.5,0.0≤y/L≤0.8,0.0≤z/L≤0.2
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Characteristics of the temporarily developing planewake used for generation of inflow profiles; lines: v2–f model at three instants; ⋄ plane cylinder wake of Schlichting 18; + Wu et al. 11 at one instant.
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(a) Instantaneous u over one x–y plane at t=32.5T in the DNS of Wu et al. 11; (b) phase-averaged 〈u〉 at ϕ=0.5 from the DNS of Wu et al. 11; (c) phase-averaged 〈u〉 at ϕ=0.5 from the present unsteady RANS using v2–f model
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Time-averaged mean skin-friction coefficient; ○ DNS of Wu et al. 11; – unsteady RANS using v2–f model; — — unsteady RANS using S–A model; [[dotted_line]] Blasius solution without wake; (a) T=1.67; (b) T=0.4175
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X–t diagram of the phase-averaged skin-friction coefficient 〈Cf〉 for T=1.67; (a) DNS of Wu et al. 11; (b) unsteady RANS using v2–f model; (c) unsteady RANS using S–A model
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Phase-averaged mean skin-friction coefficient for T=1.67; symbols: DNS of Wu et al. 11; lines: present unsteady RANS using v2–f model; (a) ○ – 0.0T, ▵ — — 0.2T, + [[dotted_line]] 0.4T; (b) ○ – 0.5T, ▵ — — 0.7T, + [[dotted_line]] 0.9T; [[dashed_line]] Blasius solution
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X–t diagram of the phase-averaged skin-friction coefficient 〈Cf〉 for T=0.4175; (a) DNS of Wu et al. 11; (b) unsteady RANS using v2–f model
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Time-averaged mean integral parameters; symbols DNS of Wu et al. 11; – unsteady RANS using v2–f model; — — unsteady RANS using S–A model; • δ*/θ; ○ 102δ*; (a) T=1.67; (b) T=0.4175
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Phase-averaged mean streamwise velocity at x/L=1.0 for T=1.67; (a) DNS of Wu et al. 11; (b) unsteady RANS using v2–f model; ○ 0.0T, ⋄ 0.25T; ▵ 0.50T, + 0.75T
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Phase-averaged mean streamwise velocity at x/L=1.5 for T=1.67; (a) DNS of Wu et al. 11; (b) unsteady RANS using v2–f model; ○ 0.0T, ⋄ 0.25T; ▵ 0.50T, + 0.75T
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Skin friction coefficient for the T3A case; • ERCOFTAC database; – v2–f(n=1); — — v2–f(n=6)

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