Results 1 to 10 of about 17,501 (159)

Moving Model Test of High-Speed Train Aerodynamic Drag Based on Stagnation Pressure Measurements. [PDF]

open access: yesPLoS ONE, 2017
A moving model test method based on stagnation pressure measurements is proposed to measure the train aerodynamic drag coefficient. Because the front tip of a high-speed train has a high pressure area and because a stagnation point occurs in the center ...
Mingzhi Yang   +4 more
doaj   +2 more sources

Measurements of the stagnation pressure in the center of a cavitating jet [PDF]

open access: yesExperiments in Fluids, 2011
The stagnation pressure at a certain distance from the nozzle is important for the erosion/ cutting capacity of a submerged jet in dredging. The decay of the stagnation pressure with jet distance is well known in the case of non-cavitating jets. It is also known that cavitation causes the rate of decay to decrease.
Nobel, A.J. (author)   +1 more
exaly   +4 more sources

Nonlinear L 1 adaptive control of stagnation pressure in a cryogenic wind tunnel [PDF]

open access: yesAdvances in Aerodynamics, 2020
Cryogenic wind tunnel is a sophisticated aerodynamics ground test facility, which operates in cryogenic temperature with injection of liquid nitrogen. The multi-variable, nonlinear and coupled dynamics existing between the temperature, pressure and Mach ...
Rusong Zhu   +4 more
doaj   +2 more sources

Study of shear-plastic slip mechanism based on TC4 titanium alloy. [PDF]

open access: yesPLoS ONE
The stagnation point and dead metal zone in the cutting process directly or indirectly affect the chip formation and stress distribution, while the stress distribution in the machining process determines the plastic slip direction of the material. Aiming
Bo Hu   +5 more
doaj   +2 more sources

Operational feasibility study of stagnation pressure reaction control for a mid-caliber non-spinning projectile

open access: yesDefence Technology, 2023
Controlled, guided munitions can reduce dispersion in the shot, while providing the capability of engaging both stationary and maneuvering targets. The Netherlands Organisation for Applied Scientific Research has developed a fin-less control technology ...
F. Bouquet
doaj   +3 more sources

Pressure Anomalies Beneath Solitary Waves with Constant Vorticity

open access: yesEng, 2023
While some studies have investigated the particle trajectories and stagnation points beneath solitary waves with constant vorticity, little is known about the pressure beneath such waves.
Marcelo V. Flamarion   +2 more
doaj   +1 more source

Conceptualisation of a novel electromechanical system for small-volume needle-free jet injection

open access: yesEngineering Applications of Computational Fluid Mechanics, 2023
Needle-free jet injectors are minimally invasive drug delivery systems that utilise high-velocity microjets (∼100 m/s) created by pressurising the liquid drug through a micronozzle (50–300 µm in diameter).
Abdul Mohizin, Jung Kyung Kim
doaj   +1 more source

Identifying the processes and characterizing the pressure zone of water jet impacting on solid surface

open access: yesAdvances in Mechanical Engineering, 2022
The difficulty in understanding the flow characteristics of water jets impacting on solid surfaces made the water jet technology requiring further investigations. The Arbitrary Lagrange-Euler (ALE) method is used to develop a numerical model of the water
Jianguo Zhang   +3 more
doaj   +1 more source

Analytical Model of Critical Ventilation Flow Rate for Accidental Hydrogen Leakage in a Confined Space

open access: yesEnergies, 2023
The determination of the critical ventilation flow rate is significant for risk control and standard development during accidental hydrogen leakage in a confined space with hydrogen-related equipment.
Xuxu Sun   +4 more
doaj   +1 more source

Increase in stagnation pressure and enthalpy in shock tunnels [PDF]

open access: yes31st Aerospace Sciences Meeting, 1993
A new technique based on the insertion of a converging section in the driven tube is described which is capable of producing substantial increases in both reservoir pressure and enthalpy. A 1D inviscid full kinetics code is used to study a number of different locations and shapes for the converging driven tube section.
DAVID BOGDANOFF, JEAN-LUC CAMBIER
openaire   +1 more source

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