Results 1 to 10 of about 16,200 (166)

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

Model-based stagnation pressure control in a supersonic wind tunnel [PDF]

open access: yesFME Transactions, 2016
The flow parameters control in wind tunnels is an area of intense research in recent years, with the aim of improving quality and efficiency of the wind tunnel operation.
Ilić Biljana   +3 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

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

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

Empirical equation of the Mach number as a function of the stagnation pressure ratio for a quasi-one-dimensional compressible flow [PDF]

open access: yesFME Transactions, 2023
In the present work for a quasi-one-dimensional isentropic compressible flow model, an empirical equation of the Mach number is constructed as a function of the stagnation pressure ratio for an analytical equation that algebraic procedures cannot invert.
Tolentino San Luis
doaj  

Impinging jets array: an experimental investigation and numerical modeling [PDF]

open access: yesE3S Web of Conferences, 2019
This paper reports on the measurements of wall shear stress and static pressure along a smooth static wall upon which jet impingement occurs. The effect of a single circular jet, respectively an array of jets is studied using a high speed/resolution ...
Dhondoo Nilesh   +2 more
doaj   +1 more source

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