Results 21 to 30 of about 17,991 (229)
Developing and applying Mach 4.5 nozzle in hypersonic wind tunnel
Xibei Gongye Daxue Xuebao, 2021 Mach 4.5 tests in a conventional trans-supersonic wind tunnel are often accompanied by the air liquefaction phenomenon, resulting in the low reliability of test data.
HUANG Ju +4 more
doaj +1 more source
Zhongguo 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
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Test Facility for High-Speed Probe Calibration [PDF]
EPJ 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
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Instability waves in a subsonic round jet detected using a near-field phased microphone array [PDF]
, 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
Lift-up, Kelvin-Helmholtz and Orr mechanisms in turbulent jets [PDF]
, 2020 Three amplification mechanisms present in turbulent jets, namely lift-up, Kelvin–Helmholtz and Orr, are characterized via global resolvent analysis and spectral proper orthogonal decomposition (SPOD) over a range of Mach numbers.
Cavalieri, André V. G. +5 more
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Numerical simulation of axisymmetric valve operation for different outer cone angle
EPJ 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
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EPJ 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.
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Engineering 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
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Computational Prediction of Thrombosis in Food and Drug Administration’s Benchmark Nozzle
Frontiers 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
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An axisymmetric similarity solution for viscous-transonic nozzle flow [PDF]
Journal 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