Results 21 to 30 of about 37,077 (265)
Journal of Hydrology and Hydromechanics, 2015 Field observations showed that in many gravel-bed rivers, rice stems and gravel interact with each other and affect the flow structure. This calls to conduct research in more details in laboratory to better understand impacts of interaction between rice ...
Fazel Najafabadi Elham +2 more
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Reynolds number effects on the Reynolds-stress budgets in turbulent channels [PDF]
Physics of Fluids, 2008 Budgets for the nonzero components of the Reynolds-stress tensor are presented for numerical channels with Reynolds numbers in the range Reτ=180–2000. The scaling of the different terms is discussed, both above and within the buffer and viscous layers. Above x2+≈150, most budget components scale reasonably well with uτ3/h, but the scaling with uτ4/ν is
Hoyas, Sergio, Jiménez Sendín, Javier
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Study on hydraulic characteristics of step-pool system
Shui kexue jinzhan, 2014 Step-pool system is a typical bed micro-morphology in high gradient (>3%) mountain rivers,which creates extremely high turbulence intensity and thus dissipates most of the flow energy. An artificial step-pool system was constructed in the Wenxia River
LI Wenzhe +4 more
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New interpretation of specific sign of Reynolds stress in the boundary layer on a flat plate
Theoretical and Applied Mechanics Letters, 2018 : The specific sign of Reynolds stress in the boundary layer on a flat plate at zero incidence is newly interpreted in present paper based on the theory of vortex-induced vortex. It avoids some problems appeared in a traditional explanation, on the basis
L.M. Lin, Y.X. Wu
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Vortex Structures around a Flat Paddle Impeller in a Stirred Vessel
Journal of Fluid Science and Technology, 2008 Vortex structures and Reynolds stresses around a flat paddle in a mixing vessel have been investigated experimentally by two-component LDV measurement.
Shinsuke MOCHIZUKI +3 more
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Simulations of the Rotor-Stator-Cavity Flow in Liquid-Floating Rotor Micro Gyroscope
Micromachines, 2023 When rotating at a high speed in a microscale flow field in confined spaces, rotors are subject to a complex flow due to the joint effect of the centrifugal force, hindering of the stationary cavity and the scale effect.
Chunze Wang +5 more
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Length-Scale Correction for Reynolds Stress Modeling [PDF]
AIAA Aviation 2019 Forum, 2019 A length-scale correction term is developed for the SSG/LRR-! Reynolds-stress model that is based on an analysis of the Yap correction. The model with and without the correction is implemented into two flow solvers and applied to four flows featuring separation.
Eisfeld, Bernhard, Rumsey, Christopher
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Self-preservation of a Turbulent Boundary Layer over d-type Roughness
Journal of Fluid Science and Technology, 2006 Using a direct drag balance measurement for the local wall shear stress, self-preserving development of a turbulent boundary layer was achieved experimentally over a d-type rough surface without pressure gradients.
Shinsuke MOCHIZUKI +2 more
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Determination of Reynolds Shear Stress Level for Hemolysis [PDF]
ASAIO Journal, 2018 Reynolds shear stress (RSS) has served as a metric for the effect of turbulence on hemolysis. Forstrom (1969) and Sallam and Hwang (1984) determined the RSS threshold for hemolysis to be 50,000 and 4,000 dyne/cm2, respectively, using a turbulent jet. Despite the order of magnitude discrepancy, the threshold by Sallam and Hwang has been frequently cited
Choon-Sik, Jhun +8 more
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Effect of LEBU on the wall shear stress in a two-dimensional turbulent channel flow
Nihon Kikai Gakkai ronbunshu, 2022 Large Eddy Break Up (LEBU) device has been tested experimentally for the wall shear stress manipulation in a fully developed two-dimensional turbulent channel flow.
Shinsuke MOCHIZUKI +2 more
doaj +1 more source