Modeling and simulation of the mixing process of fluids in microchannels promoted by acoustic streaming [PDF]
, 2011 This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece.
Lanceros-Mendez, S +4 more
core +5 more sources
Photospheric high-frequency acoustic power excess in sunspot umbra: signature of magneto-acoustic modes [PDF]
, 2013 We present observational evidence for the presence of MHD (magnetohydrodynamic) waves in the solar photosphere deduced from SOHO/MDI (Solar and Heliospheric Observatory/Michelson Doppler Imager) Dopplergram velocity observations.
Shelyag, S. +14 more
core +2 more sources
Noise Produced by the Interaction of Acoustic Waves and Entropy Waves with High Speed Nozzle Flows [PDF]
, 1976 Some aspects of the noise generated internally by a turbojet engine are considered analytically and experimentally. The emphasis is placed on the interaction of pressure fluctuations and entropy fluctuations, produced by the combustion process in the ...
Bohn, Mark Stephen
core +1 more source
Acoustic Propagation Characteristics of Metamaterials With Tubular Structures
IEEE Access, 2018 To generate acoustic waves with abnormal transmission characteristics different from those of traditional natural acoustic materials, we studied the propagation of acoustic waves in resonant phononic crystals.
Shuai Tang, Jianning Han
doaj +1 more source
Large-scale numerical modeling of hydro-acoustic waves generated by tsunamigenic earthquakes [PDF]
Natural Hazards and Earth System Sciences, 2015 Tsunamigenic fast movements of the seabed generate pressure waves in weakly compressible seawater, namely hydro-acoustic waves, which travel at the sound celerity in water (about 1500 m s−1).
C. Cecioni +3 more
doaj +1 more source
Entropy, 2019 The hypersonic flow field around a blunt cone was simulated using a high-order finite difference method. Fast acoustic waves, slow acoustic waves, entropy waves, and vortical waves were introduced into the free-stream to determine the influence of a free-
Mingfang Shi +3 more
doaj +1 more source
Observations of acoustic emission activity during gear defect diagnosis. [PDF]
, 2003 It is widely recognised that acoustic emission (AE) is gaining ground as a non- destructive technique (NDT) for health diagnosis on rotating machinery.
Mba, David +3 more
core +1 more source
Frequency dependence of acoustic waves in marine sediments [PDF]
, 2002 In situ techniques provide the most reliable method of examining the geoacoustical properties of marine sediments. In the past, individual in situ surveys have only been able to examine compressional waves over a maximum frequency range of 100 Hz to 50 ...
Robb, G. +7 more
core +1 more source
Broadband reflected wavefronts manipulation using structured phase gradient metasurfaces
AIP Advances, 2016 Acoustic metasurface (AMS) is a good candidate to manipulate acoustic waves due to special acoustic performs that cannot be realized by traditional materials. In this paper, we design the AMS by using circular-holed cubic arrays.
Xiao-Peng Wang +4 more
doaj +1 more source
Simultaneous realization of slow and fast acoustic waves using a fractal structure of Koch curve
Scientific Reports, 2018 An acoustic metamaterial based on a fractal structure, the Koch curve, is designed to simultaneously realize slow and fast acoustic waves. Owing to the multiple transmitting paths in the structure resembling the Koch curve, the acoustic waves travelling ...
Jin Ding +4 more
doaj +1 more source