Acquiring The Pulsation Characteristics Of An Unsteady Vortex Flow With The Aid Of Pressure Probes

2016 ◽  
Vol 11 (3) ◽  
pp. 27-33
Author(s):  
Andrey Mitryakov ◽  
Ivan Litvinov ◽  
Sergey Shtork
Keyword(s):  
Transfer Function ◽  
Flow Structure ◽  
Experimental Technique ◽  
Vortex Flow ◽  
Signal Reconstruction ◽  
Original Signal ◽  
Pressure Pulsations ◽  
Local Measurements ◽  
Theoretical Assessment

The special probes utilization together with measuring microphones allows to hold local measurements of pressure pulsations and to deform a flow structure marginally. Knowledge about a transfer function of the probe is required for the original signal reconstruction. This article presents the experimental technique of the probe transfer function obtainment. The theoretical assessment of the transfer function was carried out, using the model presented in the literature. Also the original signal reconstruction of pressure pulsations was carried out at the exit of the vortex tangential chamber.

Effect of the Earth’s Magnetic Field on the Electric-Vortex-Flow Structure

2018 ◽  
Vol 63 (11) ◽  
pp. 447-450 ◽  
Author(s):  
D. A. Vinogradov ◽  
Yu. P. Ivochkin ◽  
I. O. Teplyakov
Keyword(s):  
Magnetic Field ◽  
Flow Structure ◽  
Vortex Flow ◽  
Earth’S Magnetic Field ◽  
Earth's Magnetic Field

On the Issue of Typical Grain Size Assessment by the Methods of Broadband Laser Opto-Acoustics

2017 ◽  
Vol 755 ◽  
pp. 212-218 ◽  
Author(s):  
Alexander N. Kravcov ◽  
Adam Konvalinka ◽  
Vladimir A. Vinnikov ◽  
Elmira A. Ertuganova ◽  
Ivan A. Shibaev ◽  
...  
Keyword(s):  
Amplitude Spectrum ◽  
Acoustic Signals ◽  
Original Signal ◽  
Time Profiles ◽  
Grain Sizes ◽  
Acoustic Spectroscopy ◽  
Broadband Laser ◽  
Laser Sources ◽  
Express Methods ◽  
Theoretical Assessment

It is shown that one of the express-methods for studying the internal structure and phase composition of geomaterial samples is broadband acoustic spectroscopy with laser sources of ultrasound. Theoretical assessment of time profiles and spectrums of opto-acoustic signals are presented. Numerical modelling of the spectrums and time profiles of ultrasound signals generated in opto-acoustic generators made of a different material is performed. The influence of diffraction and damping in rocks on the above characteristics is studied. The amplitude spectrum and time profiles of ultrasonic pulses transmitted through samples of marble of various thicknesses in which the most part of the characteristic grain sizes lies in the range of 500 μm - 1 mm are constructed. It has been established that, according to the amplitude spectrum of the original signal and the transmitted through the sample signal, it is possible to restore the characteristic dimensions of the grains.

1209 Vortex flow structure on a butterfly wing(1)

2006 ◽  
Vol 2006 (0) ◽  
pp. _1209-a_
Author(s):  
Masaki Fuchiwaki ◽  
Kazuhiro Tanaka
Keyword(s):  
Flow Structure ◽  
Vortex Flow ◽  
Butterfly Wing

Features of the Vortex Flow Structure around a One Fin Shroud

2019 ◽  
Vol 66 (7) ◽  
pp. 491-497
Author(s):  
I. V. Afanasiev ◽  
A. V. Granovskiy ◽  
E. Yu. Marchukov ◽  
I. A. Manaev ◽  
A. E. Shunin
Keyword(s):  
Flow Structure ◽  
Vortex Flow
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