Results 21 to 30 of about 17,927 (212)

Numerical simulation and experimental validation of characteristics of jet noise from submerged axisymmetric nozzle

open access: yesZhongguo Jianchuan Yanjiu, 2017
[Objectives] In order to study the underwater jet noise characteristics,[Methods] the Lighthill acoustic analogy is carried out to compute the underwater free jet flow sound field characteristic of axisymmetric nozzle, with applying of FLUENT simulation ...
XING Junhua   +3 more
doaj   +1 more source

Test Facility for High-Speed Probe Calibration [PDF]

open access: yesEPJ Web of Conferences, 2019
A new test facility was built up as a part of a closed-loop transonic wind tunnel in VZLU´s High-speed Aerodynamics Department. The wind tunnel is driven by a twelve stage radial compressor and Mach and Reynolds numbers can be changed by the compressor ...
Jelínek Tomáš   +3 more
doaj   +1 more source

Numerical simulation of axisymmetric valve operation for different outer cone angle

open access: yesEPJ Web of Conferences, 2017
One of the method of flow separation control is application of axisymmetric valve. It is composed of nozzle with core. Normally the main flow is attached to inner cone and flow by preferential collector to primary flow pipe.
Smyk Emil
doaj   +1 more source

Computational Prediction of Thrombosis in Food and Drug Administration’s Benchmark Nozzle

open access: yesFrontiers in Physiology, 2022
Thrombosis seriously threatens human cardiovascular health and the safe operation of medical devices. The Food and Drug Administration’s (FDA) benchmark nozzle model was designed to include the typical structure of medical devices.
Yonghui Qiao   +4 more
doaj   +1 more source

Instability waves in a subsonic round jet detected using a near-field phased microphone array [PDF]

open access: yes, 2006
We propose a diagnostic technique to detect instability waves in a subsonic round jet using a phased microphone array. The detection algorithm is analogous to the beam-forming technique, which is typically used with a far-field microphone array to ...
Colonius, Tim, Suzuki, Takao
core   +2 more sources

Maximization of integral outlet quantities of an axisymmetric synthetic jet actuator based on a loudspeaker

open access: yesEPJ Web of Conferences, 2016
The goal of this paper is to find an optimal nozzle size of an axisymmetric synthetic jet actuator based on a loudspeaker. The desirable maximized output quantities are: volumetric flow, momentum flux, and kinetic energy flux.
Kordík J., Trávníček Z.
doaj   +1 more source

Numerical and experimental investigations on non-axisymmetric D-type inlet nozzle for a squirrel-cage fan

open access: yesEngineering Applications of Computational Fluid Mechanics, 2021
In this study, the unique reverse-flow around the inlet nozzle of a squirrel-cage fan was numerically studied by computational fluid dynamics (CFD), and a non-axisymmetric D-type inlet nozzle was proposed to inhibit it. It is shown that serious back flow
Hui Liu   +4 more
doaj   +1 more source

Fluidic valve for reactor regeneration flow switching [PDF]

open access: yes, 2004
An unusual and in many respects advantageous no-moving-part valve is described,developed for switching fluid flows in a through-flow reactor that requires a periodic regeneration by temporary replacement of the process fluid by another, regeneration ...
Perera   +19 more
core   +1 more source

An axisymmetric similarity solution for viscous-transonic nozzle flow [PDF]

open access: yesJournal of Fluid Mechanics, 1967
An axisymmetric viscous-transonic equation is presented. A nozzle-type similarity solution of this equation has been found, which describes the initial stages in the development of shock waves downstream of a converging-diverging nozzle throat. This solution is an extension of a two-dimensional solution found previously (Sichel 1966). By an appropriate
Sichel, M., Yin, Y. K.
openaire   +2 more sources

Analysis of a Low-Angle Annular Expander Nozzle

open access: yesShock and Vibration, 2015
An experimental and numerical analysis of a low-angle annular expander nozzle is presented to observe the variance in shock structure within the flow field. A RANS-based axisymmetric numerical model was used to evaluate flow characteristics and the model
Kyll Schomberg, John Olsen, Graham Doig
doaj   +1 more source

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