Results 21 to 30 of about 271,691 (311)
On Characteristics of Velocity and Pressure Field in Two-Dimensional Turbulent Jet
Journal of Fluid Science and Technology, 2007 Fluctuating static pressure is closely related with fluctuating velocity in a turbulent flow, and it plays an important role in the energy balance and anisotropy of turbulence.
Yasuhiko SAKAI +5 more
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Applied SciencesThe fluctuating pressure acting on the radial gate in the high-head flood discharge outlet is the main excitation source of flow-induced vibration. Therefore, this paper delves into the distribution characteristics of fluctuating pressure on the panel of
Xiudi Lu +5 more
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An attempt to measure fluctuating local pressure in free turbulent flow in water
Journal of Fluid Science and Technology, 2014 We developed a technique for the measurement of fluctuating hydraulic-pressure at an arbitrary point in turbulent flow. A pressure-measuring system was composed of a miniature static-pressure probe (SP-probe), a strain-gage-type pressure transducer, and ...
Takuya KAWATA +2 more
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Modelling and Simulation in Engineering, 2022 This paper reports the wind pressure characteristics on long-span roofs under fluctuating wind in a vertical direction based on a large eddy simulation (LES). Three types of roofs, i.e., saddle, wavy, and continuous arch roofs, are tested.
Fangjin Sun +4 more
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Shanghai Jiaotong Daxue xuebao, 2022 To study the stern vibration characteristics of the ship sailing in still water under the action of propeller induced pressure fluctuation, the propeller self-propulsion numerical simulation was conducted based on the Reynolds-averaged Navier-Stokes ...
QIN Guangfei, YAO Huilan, ZHANG Huaixin
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Characteristics Analysis of Urban Rail Transit Train Wind Load on Vertical Sound Barrier
Chengshi guidao jiaotong yanjiu[Objective] Currently, there are relatively few researches on the fluctuating wind pressure on urban rail transit sound barrier surface, necessitating an analysis on its distribution characteristics and influencing factors.
LU Yanhong +4 more
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Key Tools and Dynamic Variation of Wellbore Pressure in Dual-gradient Drilling
Shiyou jixie, 2022 In order to solve the problem of low separation efficiency of separator in hollow sphere injected dual-gradient drilling, the dynamic variation of wellbore pressure was studied.
Zhang Ruiyao +5 more
doaj
Journal of Fluid Science and Technology, 2010 Flow visualization, particle image velocimetry (PIV), and fluctuating static pressure measurements were carried out simultaneously in a turbulent shear flow separated from a sharp-edged fence to estimate the probable location of the sound source that is ...
Riho HIRAMOTO +2 more
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Structural Design and Performance Parameters of Valve-type Hydraulic Oscillator
Shiyou jixie, 2022 Recently,hydraulic oscillator is widely used in drilling to improve drilling efficiency.It is effective to eliminate the backing pressure effect in the drilling of horizontal wells and extended reach wells.Accordingly,a valve-type hydraulic oscillator ...
Wang Wei +4 more
doaj
Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source