Fluid Flow and Effect of Turbulence Model on Large-Sized Triple-Offset Butterfly Valve [PDF]
Journal of Applied Fluid Mechanics, 2023 The performance a valve has been frequently estimated with numerical methods owing to limitations such as cost and place. In this study, for the triple-offset butterfly valves, the different sizes in various disc-opening cases was numerically conducted ...
M. S. Kim +4 more
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Experimental Study on Wake Characteristics of Secondary Grooved Cylinders with Different Depths [PDF]
Journal of Applied Fluid Mechanics, 2023 In this study, the flow field of a new secondary-grooved cylinder is determined by using particle image velocimetry (PIV) to understand the wake characteristics at different depths of the secondary grooved cylinders.
F. Peng, F. Yan, B. J. Yin, J. N. Liang
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Turbulence structures and sediment transport of different countermeasure roughness of the squire bridge pier [PDF]
مهندسی عمران شریف, 2022 Laboratory experiments were carried out to investigate the hydraulics, turbulence structure, and sediment removal capacity of bridge pier with different adjusted roughness.
Amin Mahmudi Moghadam +2 more
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Numerical simulation analysis of flow characteristics in the cavity of the rotor-stator system
Engineering Applications of Computational Fluid Mechanics, 2022 Investigating the flow characteristics in the cavity by changing the rotor profile of the rotor-stator system is of considerable significance, this paper simplifies clearance flow to rotor-stator cavity flow. The numerical simulation results are compared
Jianwei Shi +4 more
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Measurements of the Reynolds stress in the turbulent premixed flame
Nihon Kikai Gakkai ronbunshu, 2021 It has been shown in our previous study that the bi-modal distribution is seen in the radial component of the gas velocity obtained in the turbulent flame brush, implying that the shear component of the Reynolds stress conditioned on the unburnt mixture ...
Nobuhiro MAKITA +3 more
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Inner-outer decomposition of wall shear stress fluctuations in turbulent channels
Theoretical and Applied Mechanics Letters, 2022 Fluctuating wall shear stress in turbulent channel flows is decomposed into small-scale and large-scale components. The large-scale fluctuating wall shear stress is computed as the footprints of the outer turbulent motions, and the small-scale one is ...
Limin Wang, Ruifeng Hu
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Experimental study on turbulence characteristics of open channel flow beneath an ice cover
Shui kexue jinzhan, 2023 River ice, as a vital component of the terrestrial cryosphere, alters the structure of under-ice flows during its evolution.The hydraulic regimes of ice-affected streams may be classified as fully-open, completely-covered, and partially-covered.Using ...
Gang CHEN +4 more
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Revisiting the Reynolds-averaged Navier–Stokes equations
Open Physics, 2022 This study revisits the Reynolds-averaged Navier–Stokes (RANS) equations and finds that the existing literature is erroneous regarding the primary unknowns and the number of independent unknowns in the RANS. The literature claims that the Reynolds stress
Sun Bohua
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Joint statistics between velocity-gradient and fluctuating pressure in a turbulent planar jet
Nihon Kikai Gakkai ronbunshu, 2017 Joint statistics between velocity gradient and fluctuating static pressure in a turbulent planar jet are experimentally investigated. The experimental data was acquired by simultaneous measurements of velocity gradient ( ∂u’2/∂x1 and ∂u’1/∂x2, where u’1,
Mamoru TAKAHASHI +3 more
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Turbulence characteristics in open channel with glass-sphere quincunx arrays
Shuili Shuiyun Gongcheng Xuebao, 2020 The quincunx array is a common structure appearing on rough bed surfaces. However, the study on the variation of flow turbulence characteristics between particles and the distribution of different quadrants is still weak.
ZHONG Liang, GE Chenxi, SUN Jianyun
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