Results 21 to 30 of about 4,206,932 (358)

On the Hydrodynamic Interplay Between a Young Nuclear Starburst and a Central Super Massive Black Hole [PDF]

open access: yes, 2010
We present 1D numerical simulations, which consider the effects of radiative cooling and gravity on the hydrodynamics of the matter reinserted by stellar winds and supernovae within young nuclear starbursts with a central supermassive black hole (SMBH). The simulations confirm our previous semi-analytic results for low energetic starbursts, evolving in
Alexander   +33 more
arxiv   +3 more sources

Dynamic Properties of the Stagnation Pressure of Water Jet in the Continous Region.

open access: bronzeTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1996
It is of interest to clarify dynamic properties of water jet pressure acting on the surface of an object to be cut in order to clarify the cutting mechanism. This pressure includes a wide range of frequency components from the pulsation of a plunger pump to the impact pressure caused by the impingement of droplets.
Fumio Kiyono   +2 more
openaire   +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

A stagnation pressure probe for use in supersonic flow [PDF]

open access: closed, 1972
Probe was developed which is capable of recording true stagnation pressure in supersonic and subsonic flows. Static pressure orifices in the compression surface allow probe to be used as combined flow direction and stagnation pressure ...
M. J. Goodyer
openalex   +2 more sources

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

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

Analytic Adjoint Solutions for the 2D Incompressible Euler Equations Using the Green's Function Approach [PDF]

open access: yesJournal of Fluid Mechanics 943 (2022) A22, 2022
The Green's function approach of Giles and Pierce is used to build the lift and drag based analytic adjoint solutions for the two-dimensional incompressible Euler equations around irrotational base flows. The drag-based adjoint solution turns out to have a very simple closed form in terms of the flow variables and is smooth throughout the flow domain ...
arxiv   +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

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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