Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2007-09-05
Physics
Condensed Matter
Statistical Mechanics
15 pages, 7 figures
Scientific paper
10.1103/PhysRevE.76.061126
We present a general theory of thermoacoustic phenomena in supercritical fluids near the critical point in a one-dimensional cell. We take into account the effects of the heat conduction in the boundary walls and the bulk viscosity near the critical point. We introduce a coefficient $Z(\omega)$ characterizing reflection of sound with frequency $\omega$ at the boundary. As applications, we examine the acoustic eigenmodes in the cell, the response to time-dependent perturbations, sound emission and reflection at the boundary. Resonance and rapid adiabatic changes are noteworthy. In these processes, the role of the thermal diffusion layers is enhanced near the critical point because of the strong critical divergence of the thermal expansion.
No associations
LandOfFree
Thermoacoustic effects in supercritical fluids near the critical point: Resonance, piston effect, and acoustic emission and reflection does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Thermoacoustic effects in supercritical fluids near the critical point: Resonance, piston effect, and acoustic emission and reflection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermoacoustic effects in supercritical fluids near the critical point: Resonance, piston effect, and acoustic emission and reflection will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-470031