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Wavelet Coherence Analysis of Plasma Beta, Alfven Mach Number, and Magnetosonic Mach Number during Different Geomagnetic Storms [PDF]
The Scientific World JournalWe study the variation in plasma beta, Alfven Mach number, and magnetosonic Mach number during different geomagnetic storms of solar cycles 23, 24, and 25.
Ashutosh Giri +4 more
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Sound attenuation in high mach number oscillating bubble media [PDF]
Ultrasonics Sonochemistry, 2023 We study theoretically and numerically sound attenuation in bubble-containing media when the bubbles are freely oscillating at high Mach numbers. This paper expands one of the main forms of bubble-related acoustic damping factors by extending the ...
Jiawen Yu, Desen Yang, Jiangyi Zhang
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A single oscillating bubble in liquids with high Mach number [PDF]
Ultrasonics Sonochemistry, 2022 The oscillation characteristics of a single bubble and its induced radiation pressure and the dissipated power are essential for a wide range of applications.
Xiaoxiao Zheng +3 more
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A low Mach number solver: Enhancing applicability [PDF]
Journal of Computational Physics, 2012 In astrophysics and meteorology there exist numerous situations where flows exhibit small velocities compared to the sound speed. To overcome the stringent timestep restrictions posed by the predominantly used explicit methods for integration in time the Euler (or Navier-Stokes) equations are usually replaced by modified versions.
Natalie Happenhofer +4 more
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Quasiperpendicular High Mach Number Shocks [PDF]
Physical Review Letters, 2015 Shock waves exist throughout the universe and are fundamental to understanding the nature of collisionless plasmas. Reformation is a process, driven by microphysics, which typically occurs at high Mach number supercritical shocks. While ongoing studies have investigated this process extensively both theoretically and via simulations, their observations
Sulaiman, AH +5 more
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Novel Characteristics of Subsonic Coflowing Jets With Varying Lip Thickness [PDF]
Journal of Aerospace Technology and Management, 2020 Effect of Mach number on coflowing jet at lip thickness of 0.2 Dp, 1.0 Dp and 1.5 Dp (where Dp is primary nozzle exit diameter, 10 mm) at Mach numbers 1.0, 0.8 and 0.6 were studied experimentally.
Naren Shankar Radha Krishnan +1 more
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An Effective AUSM-Type Scheme for Both Cases of Low Mach Number and High Mach Number
Applied Sciences, 2022 A new scheme called AUSMAS (Advection Upstream Splitting Method for All Speeds) is proposed for both high speed and low speed simulation cases. For the cases of low speed, it controls the checkerboard decoupling by keeping the coefficient of the pressure
Nan Li, Feng Qu, Di Sun, Guanghui Wu
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Archives of Acoustics, 2021 The reflection coefficient of the open end belongs among the essential parameters in the physical description of a flue organ pipe. It leads directly to practical topics such as the pipe scaling.
Viktor HRUŠKA, Pavel DLASK
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Sonic Eddy Model of the Turbulent Boundary Layer
Fluids, 2022 The effects of Mach number on the skin friction and velocity fluctuations of the turbulent boundary layer are considered through a sonic eddy model. Originally proposed for free shear flows, the model assumes that the eddies responsible for momentum ...
Paul Dintilhac, Robert Breidenthal
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Aeroengine High-Attitude/Low Mach Number Oscillations: Mechanism and Prevention Design
International Journal of Aerospace Engineering, 2021 The issue of aeroengine oscillations over high-attitude and low-speed flight envelope has been an unsolved problem due to their classified nature and hard reproduction in simulated altitude test stand.
Jiqiang Wang
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