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Acoustic fields of acid suspensions containing cassava bagasse: Influence of physical properties on acoustic attenuation
(2021-06-01)
The effects produced by high-intensity ultrasound application during the acid pretreatment of biomass can enhance its later conversion into bioethanol. Therefore, it is interesting to evaluate how residues, such as cassava ...
Optimal acoustic design of multi-source industrial buildings by means of a simplified acoustic diffusion model
(Elsevier, 2016-02)
Noise in industrial workplaces has become an important occupational problem. Accordingly, there is a need to implement cost-effective strategies for reducing noise levels.In this paper, an optimal design methodology of ...
Analytical study of the acoustic field in a spherical resonator for single bubble sonoluminescence
(Acoustical Society of America Institute of Physics, 2009-09)
The acoustic field in the liquid within a spherical solid shell is calculated. The proposed model takes into account Stoke?s wave equation in the viscous fluid, the membrane theory to describe the solid shell motion and the ...
AcMus: an Open, Integrated Platform for Room Acoustics Research
(Campinas, 2009)
This article describes the design, implementation, and experiences with AcMus, an open and integrated software platform for room acoustics research, which comprises tools for measurement, analysis, and simulation of rooms ...
A state-space modeling approach for active structural acoustic control
(IOS PRESS, 2009)
The demands for improvement in sound quality and reduction of noise generated by vehicles are constantly increasing, as well as the penalties for space and weight of the control solutions. A promising approach to cope with ...
The chemical percolation devolatilization model applied to the devolatilization of coal in high intensity acoustic fields
(Soc Brasileira Quimica, 2002-05-01)
The chemical percolation devolatilization model (CPD) was extended for the prediction of drying and devolatilization of coal particles in high intensity acoustic fields found in Rijke tube reactors. The acoustic oscillations ...
A model for three-dimensional simulation of acoustic emissions from rotating machine vibration
(Acoustical Soc Amer Amer Inst PhysicsMelvilleEUA, 2010)
Improvements in closed-section wind-tunnel beamforming experiments of acoustic sources distributed along a line
(2019-12-15)
Phased-array microphone techniques are widely used tools for the measurement and analysis of aeroacoustic noise sources. Nevertheless, beamforming results of sources distributed along a line, such as airfoil trailing-edge ...
Saddle-Node Bifurcations and Design Parameters for Single-Axis Acoustic Levitators
(2020-01-01)
Acoustic levitation (Aclev) is an important tool to noncontact handling of containerless objects. In the recent years, many devices have been successfully developed due to the stable behavior of the Aclev devices. As a ...
Application of acoustic models for polydisperse emulsion characterization using ultrasonic spectroscopy in the long wavelength regime
(Elsevier B.V., 2020-10-05)
Ultrasonic spectroscopy is a technique that often has been used for measuring the particle size distribution in suspensions and emulsions. The ability to analyze concentrated heterogeneous systems and optically opaque ...