Results 1 to 10 of about 150,446 (268)

Separation of pressure signals caused by waves traveling in opposite directions

open access: yesJournal of Hydroinformatics, 2023
Hydraulic transient analysis allows the condition assessment of pipeline systems by the measurement of a system's transient pressure response subject to input pressure excitations.
Marco Ferrante, Aaron Zecchin
doaj   +1 more source

НЕОПРЕДЕЛЕННОСТЬ В РАСЧЕТАХ ИЗ-ЗА «МГНОВЕННЫХ» АВАРИЙНЫХ СИТУАЦИЙ НА ВВЭР-1000

open access: yesГлобальная ядерная безопасность, 2022
The paper shows the occurrence of pressure waves and their propagation in the equipment of the first circuit of the WWER-1000 reactor plant in emergency situations associated with an instantaneous stop of the Main circulation pump or a two-way flow with ...
S. P. Nikonov, D. A. Amer
doaj   +1 more source

Study of Effect of Distance and Diameter of Leak on Hydraulic Properties of Unsteady Pressure Waves [PDF]

open access: yesعلوم و مهندسی آبیاری, 2017
Having unsteady flow in water supply systems due to the change from one stable state to another stable state is inevitable. On the other hand, over time, the various causes lead to the pipeline leakage or even a pipe fracture.
Kamran Mohammadi   +3 more
doaj   +1 more source

New Dimensionless Number for the Transition from Viscous to Turbulent Flow

open access: yesFluids, 2022
Within the framework of Classical Continuum Thermomechanics, we consider an unsteady isothermal flow of a simple isotropic linear viscous fluid in the liquid state to investigate the transient flow conditions.
Carmine Di Nucci   +3 more
doaj   +1 more source

Tsunamis Generated and Amplified by Atmospheric Pressure Waves Due to an Eruption over Seabed Topography

open access: yesGeosciences, 2022
Numerical simulations were generated using a nonlinear shallow-water model of velocity potential to study the fundamental processes of tsunami generation and amplification by atmospheric pressure waves.
Taro Kakinuma
doaj   +1 more source

The Human Systemic and Cerebral Circulations: Contrasts in Structure and Function

open access: yesArtery Research, 2020
Apart from peculiarities of the cerebral circulation, required to perfuse the brain with the subject erect, the principles established for function of the human systemic circulation (pulsatile flow at input and steady flow at output in capillaries) are ...
Michael O’Rourke   +8 more
doaj   +1 more source

Radiation Pressure of Centimetre Waves [PDF]

open access: yesNature, 1949
THE pressure exerted on a perfectly specular surface bv a normally incident beam of electromagnetic waves travelling in free space can be calculated with the known formula where S is the Poynting vector and c the speed of light.
N, CARRARA, P, LOMBARDINI
openaire   +2 more sources

Experimental Investigation and Mechanism Analysis on Rock Damage by High Voltage Spark Discharge in Water: Effect of Electrical Conductivity

open access: yesEnergies, 2020
High voltage spark discharge (HVSD) could generate strong pressure waves that can be combined with a rotary drill bit to improve the penetration rate in unconventional oil and gas drilling.
Zhixiang Cai   +4 more
doaj   +1 more source

Experimental Study on Silty Seabed Liquefaction and Its Impact on Sediment Resuspension by Random Waves

open access: yesJournal of Marine Science and Engineering, 2022
Seabed liquefaction and sediment resuspension under wave loading are key issues in marine engineering, but are usually regarded as independent processes (instead of coexisting and interacting processes).
Jiangfeng Dong   +7 more
doaj   +1 more source

Nonlinear Analysis of Tropical Waves and Cyclogenesis Excited by Pressure Disturbance in Atmosphere

open access: yesMathematics, 2021
The horizontal equations of motion for an inviscid homogeneous fluid under the influence of pressure disturbance and waves are applied to investigate the nonlinear process of solitary waves and cyclone genesis forced by a moving pressure disturbance in ...
Zi-Liang Li, Jin-Qing Liu
doaj   +1 more source

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