منابع مشابه
The study of sound wave propagation in rarefied gases using unified gas-kinetic scheme
Sound wave propagation in rarefied monatomic gases is simulated using a newly developed unified gaskinetic scheme (UGKS). The numerical calculations are carried out for a wide range of wave oscillating frequencies. The corresponding rarefaction parameter is defined as the ratio of sound wave frequency to the intermolecular particle collision frequency. The simulation covers the flow regime from...
متن کاملPropagation of Forced Sound Waves in Rarefied Gasdynamics
* Present address: Applied Mathematics Department, Brookhaven National Laboratory, Upton, New York. • See, for instance, L. Landau and E. Lifshitz, Fluid Mechanics (Addison-Wesley Publishing Co., Inc., Reading, Mass., 1959). scribed by the classical theory of Stokes and Kirchoff. • This theory is, of course, based on the Navier-Stokes equations. However, for high-frequency sound propagation in ...
متن کاملSound propagation through a rarefied gas in rectangular channels.
Sound propagation through a rarefied gas inside a two-dimensional cavity is investigated on the basis of the linearized Boltzmann equation, where one of the cavity walls oscillates harmonically in the direction normal to its own surface and is considered as a sound source. An analytical solution at high oscillation frequencies is obtained and detailed numerical results for a wide range of gas r...
متن کاملSound Propagation in Dilute Polyatomic Gases
Sound propagat ion in di lute pure gases, b o t h m o n a t o m i c a n d p o l y a t o m i c , has been considered f r o m the po int o f v iew o f the W a l d m a n n S n i d e r equat ion . It is shown that the c o m m o n l y e m p l o y e d assumption that sound propagat ion in gases is equ iva lent t o the propagat i on o f plane waves is val id o n l y in the region where collisions rest...
متن کاملMolecular simulations of sound wave propagation in simple gases
Molecular simulations of sound waves propagating in a dilute hard sphere gas have been performed using the direct simulation Monte Carlo method. A wide range of frequencies is investigated, including very high frequencies for which the period is much shorter than the mean collision time. The simulation results are compared to experimental data and approximate solutions of the Boltzmann equation...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1972
ISSN: 0001-4966
DOI: 10.1121/1.1981638