Acoustic phenomena

L. Rayleigh. The explanation of certain acoustic phenomena. Nature, July 18 319-321, 1878. 

Can acoustic phenomena be described by electrical circuits Yes, they can, by means of the electromechanical analogy, that maps forces onto voltages... 

This subsection is organized as follows. The tube vibration excitation mechanism (the fluidelastic whirling) will be considered first, followed by acoustic phenomena. Finally, some design-related guidelines for vibration prevention will be outlined. 

The combination of acoustic and electroacoustic spectroscopy provides a much more reliable and complete characterization of the disperse system than either one of those techniques separately. Electroacoustic phenomena are more complicated to interpret than acoustic phenomena because an additional field (electric) is involved. This problem becomes even more pronounced for a concentrated system. It makes acoustics favorable for characterizing particle size, whereas electroacoustics yields electric surface properties. 

The invitations to participants suggested that the written papers concern Fast Adiabatic Phase Changes in Fluids and Related Phenomena. Particular topics suggested were Liquefaction shockwaves and Shock splitting Evaporation waves Condensation in Laval nozzles and turbines Stability in multiphase shocks Non-equilibrium and near-critical phenomena Nucleation in dynamic systems Structure of transition layers Acoustic phenomena in two-phase systems and Cavitation waves. All of these topics should have been treated with emphasis on physical results, new phenomena and theoretical models. Participants from fourteen nations took part in the Symposium and presented papers which were within the range of suggested topics. 

Kaiser J (1950) A study of acoustic phenomena in tensile tests. Dr.-lng. dissertation, Technical University of Munich... 

Source modelling and spectrum modelling attempt to alleviate this problem by providing less obscure synthesis parameters both support the incorporation of natural acoustic phenomena. The fundamental difference between source and spectrum modelling... 

Low Mach number equations similar to incompressible flow equations do not describe acoustic phenomena the only compressibility effect retained is the local thermal gas expansion. To obtain a well-known Boussinesq approximation, one should additionally require a low relative temperature (density) variation. 

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