Results 21 to 30 of about 845 (133)

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

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

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

Comparison of synthetic jet actuators based on sharp-edged and round-edged nozzles

open access: yesEPJ Web of Conferences, 2017
Axisymmetric synthetic jet actuators based on a loudspeaker and on two types of flanged nozzles were tested and compared experimentally. The first type of the nozzle was a sharp-edged circular hole.
Kordík J., Trávníček Z.
doaj   +1 more source

Aerodynamic Design of a Laval Nozzle for Real Gas Using Hodograph Method

open access: yesAerospace, 2018
We propose an approach for the design of the subsonic part of plane and axisymmetric Laval nozzles for real gases. The proposed approach is based on the hodograph method and allows one to solve the inverse design problem directly.
Aleksandr Chikitkin   +3 more
doaj   +1 more source

Effect of Nozzle Exit Geometry on the Development of Turbulent jets

open access: yesJournal of King Saud University: Engineering Sciences, 1994
Results are presented for some features of the structure of turbulent free jets issuing from an equilateral triangular nozzle and from a sharp-edged square nozzle with the same cross-sectional area.
A. Seif, M. Zedan, A. Shibl
doaj   +1 more source

Tunable 3D‐Printed Static Mixers for Gradient Bioprinting With High Cell Viability

open access: yesAdvanced Materials Technologies, EarlyView.
ABSTRACT The fabrication of native tissue‐like structures with gradual transitions in material properties, cell types, and growth factors remains a major challenge in biofabrication due to the lack of suitable methods. Mimicking the hierarchical organization of living tissues is essential for functional models, yet creating gradient, multimaterial ...
Florian Hofmann   +9 more
wiley   +1 more source

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