acoustic field
Parallel algorithm for 3D modeling of monochromatic acoustic field by the method of integral equations
... We have designed a parallel solver for 3D frequency-domain modeling of an acoustic field. The equation system is solved iteratively; the matrix-vector product is performed via FFT. It makes the ...
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Range dependent flexibility in the acoustic field of view of echolocating porpoises (Phocoena phocoena)
... the acoustic field of view (FOV), it may be disadvantageous to the echolocator at short ranges, as moving prey may easily vanish at the periphery of the ...
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Experimental Design, Data Analysis, and Modeling for Characterizing the Three-Dimensional Acoustic Field of a Seismic Airgun Array
... human-made acoustic sources in the ocean may influence marine ...broadband acoustic energy distribution of such sources in complex, variable ocean ...of acoustic radiation from has been mostly ...
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Rapid distortion theory for compressible homogenous turbulence under isotropic mean strain
... One point that comes from the analysis of the acoustic mode is that the pressure-dilatation is highly dependent on initial conditions. To demonstrate this point two runs were made with different initial states of ...
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The Calculation Method and the Test for Radiated Sound Power of Impulsive Noise in a Reverberant Tank
... important acoustic characteristics of underwater ...transient acoustic are about detection [1] and analysis on acoustic field ...the acoustic field changes within different ...
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Elucidating the mechanism of paracetamol sonocrystallization for product purity enhancement
... The highest bubble counts were measured in ethanol at 100% applied power. Ethanol has a significantly higher vapor pressure than both water and isoamyl alcohol and therefore, bubbles are nucleated more readily during ...
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Performance of a Microengineered ultrasonic particle manipulator
... For the separation of yeast, the modelled results are more optimistic than the experimental results. The initial concentration of the yeast was high at 0.2% compared to that for the 1 m latex particles, where 0.015% ...
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Eccentricity effects on acoustic radiation from a spherical source suspended within a thermoviscous fluid sphere
... The problem considered here is that of computing the acoustic field of a spherical source vibrating with a time harmonic, axisymmetric, arbitrary surface velocity and eccentrically posit[r] ...
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Capacitive ultrasonic transducers fabricated using microstereolithography
... Figure 6.11 - Field scans of the reflected acoustic field in z-y plane at x=0 mm from an MSL fully focused parabolic mirror showing a a contour plot, b an image plot and c a wire frame p[r] ...
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Reconfigurable particle separation by dynamic acoustic fields in microfluidic devices
... separation. Acoustic micro-particle separation offers a prom- ising avenue for label-free, high recovery, cell and particle separation and isolation in tissue en- gineering and targeted drug ...the acoustic ...
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Aero Acoustic Noise Analysis of a Locomotive Cooling System Ducts and Structure Optimization
... system meets its design requirements. Currently, such capability is not available within a development cycle for complex industrial applications. This is due to the fact that noise information at receiver locations ...
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Directional Sensitivity of the Ears of Noctuid Moths
... The measurements of sound intensity in relation to angle of presentation required that a tympanic nerve preparation mounted in a free acoustic field be presented with ultrasonic pulses a[r] ...
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Numerical Simulation of Near Field Seismoacoustic Probing of a Layer Inclusion in a Homogeneous Infinite Medium
... backscattered acoustic field is characterized (as in the previous case) by amplitude decrease and fan –shaped relief but of lower angular periodicity than that in Figure ...the field transmitted ...
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The detection of ultrasound using fiber-optic sensors
... the acoustic field had been purely linear, the output polarization state of the light required to give maximum signal amplitude would be ...the acoustic wave is mainly linear, but with a smaller ...
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Big brown bats (Eptesicus fuscus) emit intense search calls and fly in stereotyped flight paths as they forage in the wild
... s acoustic field of view and hence its perception of the echo ...s acoustic field of view; however, the source level and directionality of the big brown bat ’ s sonar signals have not been ...
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Noise Annoyance Due to Wind Flow Interaction with a Building’s Facade
... In order to verify the behavior of the perforated plate as an acoustic source, a test was conducted in a wind tun- nel of the faculty of engineering, UdelaR. At its entrance a flow straightener honeycomb ...
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The Forward and Inverse Problem Based on Magneto Acoustic Tomography with Current Injection
... collecting acoustic pressure sig- nal, which the number of is 50 4 × , around the interface, the sound sources, Lo- rentz force divergence can be rebuilt for the sample by the time reversal ...
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A Bioparticle Separator based on Dielectrophoretic Integrated with Acoustic Force: Design and Simulation
... Pressure acoustic module in frequency domain (acpr), utilize for simulating acoustic pressure field inside the ...pressure acoustic module equations, normal acceleration boundary condition ...
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Nonlocal boundary conditions for corrugated acoustic metasurface with strong near field interactions
... The propagation of long-wavelength sound in the presence of a metasurface made by arranging acoustic resonators periodically upon or slightly above an impervious substrate is studied. The method of two- scale ...
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Vibro Acoustic Analysis of Laminated Composite Plate Roof of Car Body
... Genovese et al., [2] explained a numerical and experimental study of the structural behavior and the vibro-acoustic response of an innovative composite rail vehicle car body roof. On the basis of structural and ...
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