Transition in the flow due to a rotating sphere: Simulating isolated roughness

Calabretto, Sophie A. W.; Denier, James P.

doi:10.1063/5.0012795

Cited by 5 publications

(1 citation statement)

References 23 publications

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“…Later, Anilkumar and Roy 40 examined self‐similar explanations for time‐dependent coupled convective motion in a rotating sphere's stagnation point zone. Calabretto and Denier 41 recently provided outcomes on the roughness and tempted responsiveness of the boundary layer motion owing to sphere rotation.…”

Section: Introductionmentioning

confidence: 99%

Influence of nonlinear thermal radiation on mixed convective hybrid nanofluid flow about a rotating sphere

2022

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Section: Introductionmentioning

confidence: 99%

Influence of nonlinear thermal radiation on mixed convective hybrid nanofluid flow about a rotating sphere

2022

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Influence of mixed convection nanofluid flow over a rotating sphere in the presence of diffusion of liquid hydrogen and ammonia

Patil

Benawadi

Shanker³

2022

Mathematics and Computers in Simulation

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Passive fluidic control on aero-optics of transonic flow over turrets with rough walls

Ren

Yao

et al. 2022

Physics of Fluids

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In the transonic flow over a hemisphere-on-cylinder turret, strong aero-optical effects can be caused by local shock-boundary layer interactions and separation shear layers at the turret's zenith. The effects of an annular rough wall on the passive control of fluid and aero-optics are investigated by experimental measurements and numerical simulations. The local shock-boundary layer interaction and separated shear layer at the zenith of the turret are recorded using shadowing and Mach-Zehnder interferometer measurements. The aero-optics are measured using a Shack-Hartmann wavefront sensor. The experimental results show that the annular rough wall on the turret weakens the local shock wave, moves the flow separation point forward, and reduces the wavefront distortion at the zenith. The rough wall functions for the shear stress transport (SST) k- ω turbulence model proposed by Aupoix [ J. Fluid Eng., v137, 2014] and Lee [ Eng. Appl. Comp. Fluid, v137, 2014] are used to further study the control effect of different roughnesses. Numerical simulations based on both rough wall functions show good agreement with the experimental measurements. For various transonic flows, the steady wavefront distortions at the zenith with the rough wall at roughness k s = 1 mm are 21 % -- 50% smaller than those with smooth walls. The smaller the supersonic region, the more effective the rough wall is in reducing wavefront distortion.

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Transition in the flow due to a rotating sphere: Simulating isolated roughness

Cited by 5 publications

References 23 publications

Influence of nonlinear thermal radiation on mixed convective hybrid nanofluid flow about a rotating sphere

Influence of nonlinear thermal radiation on mixed convective hybrid nanofluid flow about a rotating sphere

Influence of mixed convection nanofluid flow over a rotating sphere in the presence of diffusion of liquid hydrogen and ammonia

Passive fluidic control on aero-optics of transonic flow over turrets with rough walls

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