Results 31 to 40 of about 91,606 (298)

Numerical Simulation of Unsteady Flow in A Centrifugal Pump [PDF]

open access: yesE3S Web of Conferences, 2019
In this paper, the computational fluid dynamic (CFD) method was used to simulate the three-dimension, unsteady turbulent flow in a primary pump. Moving mesh method was used to simulate the rotation of the impeller.
Ma Xudan   +4 more
doaj   +1 more source

Numerical Study on Cavitating Flow-Induced Pressure Fluctuations in a Gerotor Pump

open access: yesEnergies, 2023
Using the RNG k-ε turbulence model and a full cavitation model, this study numerically simulated cavitating flow-induced pressure fluctuations in a gerotor pump and analyzed the relationship between cavitating flow and pressure fluctuations.
Peijian Zhou   +5 more
doaj   +1 more source

Experimental study on pore pressure in rock-soil slope during reservoir water level fluctuation

open access: yes, 2005
A test system was developed for measuring the pore pressure in porous media, and a new model was devised for the pore pressure testing in both saturated and unsaturated rock-soil.
李连祥   +5 more
core   +1 more source

Analysis of the Sound Field Structure in the Cabin of the RRJ-95NEW-100 Prototype Aircraft

open access: yesAerospace, 2023
The results of in-flight experiments to determine the structure of the sound field in the cabin and pressure fluctuation fields on the surface of the fuselage of the RRJ-95NEW-100 prototype aircraft are presented here. Wall pressure fluctuation spectrums
Vladimir Lavrov   +2 more
doaj   +1 more source

Fluctuation characteristics of arc voltage and jet flow in a non-transferred dc plasma generated at reduced pressure

open access: yes, 2009
A torch with a set of inter-electrode inserts between the cathode and the anode/nozzle with a wide nozzle exit was designed to generate plasma jets at chamber pressures of 500–10 000 Pa.
郭志颖   +4 more
core   +1 more source

Vacuum radiation pressure fluctuations on atoms [PDF]

open access: yesPhysical Review A, 2021
Recent work has shown that the stress tensor components, such as energy density or pressure, of a quantum field can be subject to large vacuum fluctuations. The energy density or pressure must be averaged in time before the fluctuations can be finite, and the probability of a large fluctuation depends upon the details of the averaging and can be much ...
openaire   +2 more sources

Base Pressure Fluctuations [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1960
The intense vibration accompanying the extension of dive brakes and other high drag devices on aircraft and missiles has been observed for many years. Recently, considerable vibration has been experienced at the fundamental longitudinal mode and at other internal resonance frequencies of a vehicle which had a blunt base during the maximum dynamic ...
openaire   +1 more source

Therapeutic Apheresis in Nigeria: A Multi‐Center Summary of Abstracts From the Inaugural Nigerian Society for Apheresis Scientific Meeting

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Therapeutic apheresis (TA) is an established treatment modality for hematologic, neurologic, and immunologic disorders, yet access remains severely limited in sub‐Saharan Africa. Donor apheresis, including platelet apheresis collection from healthy donors, represents an important complementary modality supporting blood product ...
Nosa Bazuaye   +33 more
wiley   +1 more source

A Study on the Effects of EGR and VNT on the Intake and Exhaust Pressure Waves in a High-Pressure Common-Rail Diesel Engine

open access: yesJournal of Applied Fluid Mechanics, 2020
The transient pressure waves in the intake and exhaust systems directly affect the intake and exhaust processes of diesel engines, thus further affecting the combustion process and the performance of diesel engines.
S. H. Liu, Y. F. Hou, Y. H. Bi, S. Yin
doaj  

The Numerical Prediction and Analysis of Propeller Cavitation Benchmark Tests of YUPENG Ship Model

open access: yesJournal of Marine Science and Engineering, 2019
The numerical simulation of propeller cavitation benchmark tests of YUPENG ship model is studied based on OpenFOAM, an open-source CFD (Computational Fluid Dynamics) platform, and the benchmark tests are introduced as well. The propeller cavitation shape
Chaosheng Zheng   +2 more
doaj   +1 more source

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