Results 11 to 20 of about 271,691 (311)
Evolution Law of Wellbore Instability Risk under Fluctuating Pressure
Energies, 2023 The bottom hole fluctuating pressure has a large influence on the wellbore instability. To address this problem, firstly, according to the principle of seepage mechanics, we established a calculation model of the change in pore pressure around the ...
Kai Zhao +4 more
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Wellbore stability model for argillaceous limestone - claystone thin interbeds under synergistic effect of fluctuating pressure -hydration. [PDF]
Sci RepThe effect of hydration and fluctuating pressure in drifting conditions presents challenges to wellbore stability, impacting cost savings and safety in drilling operations.
Lv K +6 more
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Wind, 2023 Wind loads for the design of wind-resistant high-rise buildings are generally evaluated based on spectral modal analysis or time-history response analysis using wind pressure data obtained from wind tunnel experiments with rigid models.
Tomoyuki Murakami +2 more
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Fluids, 2021 The influence of the expansion corner on pressure fluctuation is an important subject in supersonic flow around high-speed vehicles. Past studies have clarified how the expansion corner alters the root-mean-square of the fluctuating pressure coefficient (
Lei Zhang, Zi-Niu Wu
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Cavitation and Induced Excitation Force of Ice-Class Propeller Blocked by Ice
Journal of Marine Science and Engineering, 2021 The presence of broken ice in the flow field around a propeller causes severe blade erosion, shafting, and hull vibration. This study investigates the performance of the propeller of a ship sailing in the polar regions under the propeller–ice non-contact
Pei Xu +5 more
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Pressure Fluctuation near the Limiting Characteristics in a Sonic Flow around NACA0012 Airfoil
Fluids, 2022 Pressure fluctuation for flow around an airfoil has been well studied for subsonic, transonic and supersonic flows. In this paper, the sonic flow case is studied using a NACA0012 airfoil.
Lei Zhang, Zi-Niu Wu
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Engineering Applications of Computational Fluid Mechanics, 2023 In the paper, the modulation effect of rotor-stator interaction subjected to fluctuating rotation speed is investigated numerically. A quasi-bivariate variable mode decomposition method for analyzing non-stationary flow fields is proposed for the first ...
Shiwei Ni +7 more
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Effects of Outlet Shrinkage on Hydraulics in Hyper-Concentrated Sediment-Laden Flow
Applied Sciences, 2020 Finding an appropriate shape for the releasing building is thoroughly relevant given the energy dissipation and safety requirements of a high dam in a sediment-laden river.
Jijian Lian +4 more
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Flow-Induced Noise Characteristics Analysis of a Pipeline Structure in a Cabin Rigid Corner
Applied Sciences, 2023 The acoustic radiation characteristics of pipeline structures caused by turbulent fluctuating pressure are among the most important acoustic radiation sources in vessel cabins.
Weihua Chen +3 more
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Shock and Vibration, 2020 Aiming at the problem of pipeline vibration caused by fluids in linear-driving pump pipeline system, this paper proposed a vibration reduction method based on a pressure-fluctuating attenuator with circular elastic sheets. Firstly, a new type of pressure-
Songlin Nie +4 more
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