High-speed observation of the piston effect near the gas-liquid critical point

Details High-speed observation of the piston effect near the gas-liquid critical point High-speed observation of the piston effect near the gas-liquid critical point

2006-02-08

arxiv.org/abs/cond-mat/0602202v1

Physics

Condensed Matter

Statistical Mechanics

5 figures

Scientific paper

10.1103/PhysRevE.74.010101

We measured high-speed sound propagation in a near-critical fluid using a ultra-sensitive interferometer to investigate adiabatic changes of fluids on acoustic timescales. A sound emitted by very weak continuous heating caused a stepwise adiabatic change at its front with a density change of order 10^{-7}g/cm^3 and a temperature change of order 10^{-5}deg. Very small heat inputs at a heater produced short acoustic pulses with width of order 10micro sec, which were broadened as they moved through the cell and encountered with the boundaries. The pulse broadening became enhanced near the critical point. We also examined theoretically how sounds are emitted from a heater and how applied heat is transformed into mechanical work. Our predictions well agree with our data.

Affiliated with

Also associated with

No associations

Rating

High-speed observation of the piston effect near the gas-liquid critical point 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 High-speed observation of the piston effect near the gas-liquid critical point, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-speed observation of the piston effect near the gas-liquid critical point will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-698053