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Turbulence intensity measurement in the wind tunnel used for airfoil flutter investigation
EPJ Web of Conferences, 2017 The paper reports on hot wire turbulence intensity measurements performed in the entry of a suction-type wind tunnel, used for investigation of flow-induced vibration of airfoils and slender structures.
Šidlof Petr +3 more
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Optical intensity interferometry through atmospheric turbulence [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 Conventional ground-based astronomical observations suffer from image distortion due to atmospheric turbulence. This can be minimized by choosing suitable geographic locations or adaptive optical techniques, and avoided altogether by using orbital platforms outside the atmosphere.
Tan, PK, Chan, AH, Kurtsiefer, C
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Alexandria Engineering Journal, 2023 Spraying liquid jets in the transverse airflow is suitable for creating tiny droplets in the combustion chamber. This paper numerically investigated the effect of airflow turbulence intensity on liquid jet penetration and breakup.
Bahram Jalili, Payam Jalili
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Beam Properties of a Partially Coherent Beam Propagating Horizontally in Atmospheric Turbulence
Photonics, 2023 This study explored the impact of atmospheric turbulence on partially coherent light propagation. Atmospheric turbulence causes random modulation of the intensity and phase of light, resulting in a speckle pattern in the far field.
Zengyan Wu +5 more
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Nonlocal amplification of intense vorticity in turbulent flows [PDF]
Physical Review Research, 2021 The nonlinear and nonlocal coupling of vorticity and strain-rate constitutes a major hindrance in understanding the self-amplification of velocity gradients in turbulent fluid flows. Utilizing highly-resolved direct numerical simulations of isotropic turbulence in periodic domains of up to $12288^3$ grid points, and Taylor-scale Reynolds number $R_λ ...
Dhawal Buaria, Alain Pumir
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A New Analytical Wake Model for Yawed Wind Turbines
Energies, 2018 A new analytical wake model for wind turbines, considering ambient turbulence intensity, thrust coefficient and yaw angle effects, is proposed from numerical and analytical studies.
Guo-Wei Qian, Takeshi Ishihara
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Nonstationary distributions of wave intensities in wave turbulence [PDF]
Journal of Physics A: Mathematical and Theoretical, 2017 We obtain a general solution for the probability density function of wave intensities in non-stationary Wave Turbulence. The solution is expressed in terms of the wave action spectrum evolving according the the wave-kinetic equation. We establish that, in absence of wave breaking, the wave statistics asymptotes to a Gaussian distribution in forced ...
Choi, Yeontaek +3 more
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Experimental Analysis of Aerodynamic Optimization by Vortex Generators on Wind Turbine Airfoils in Turbulent Flow [PDF]
Journal of Applied Fluid MechanicsWind turbines often operate under complex turbulent environments owing to factors such as the geographic location and wake interference. It remains unclear whether aerodynamic optimization measures for wind turbine airfoils can remain effective in such ...
S. Lv, W. Li, Y. Jia, H. Liu, Q. Liu
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Turbulence and Intense Sound Fields [PDF]
The Journal of the Acoustical Society of America, 1956 A brief review is given of present experimental and theoretical knowledge of phenomena involving interaction of strong sound fields and turbulence. Consideration is given to the scattering of sound and shock waves by turbulence, the generation of noise by turbulence, and the effect of intense noise fields or strong resonances on the evolution of a ...
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Journal of Ocean Engineering and ScienceSince 2020, offshore wind turbine prototypes have experienced a substantial increase in size. At the same time, wind turbine design standards have not specified requirements for marine atmospheric turbulence.
Feng Guo, Zhen Gao
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