Critical dynamics near the oscillatory instability in Rayleigh-Benard convection

Journal Article · Mon Oct 15 00:00:00 EDT 1984 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.53.1567· OSTI ID:6301044

Ecke, R E; Maeno, Y; Haucke, H; Wheatley, J C

The oscillatory temperature amplitude of a low--Prandtl-number fluid in Rayleigh-Benard convection is shown to exhibit critical slowing down near the onset of oscillatory convection. The data are analyzed in the context of a mean-field Landau-Hopf equation. We find the magnitude of the power-law exponent for the dynamic relaxation to be 1.01 +- 0.02 and 1.00 +- 0.02 above and below onset, respectively, in agreement with the theoretical predictions.

• Research Organization: Los Alamos National Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 6301044
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 53:16; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CONVECTION
ENERGY TRANSFER
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HEAT TRANSFER
HEATING
HELIUM 3
HELIUM 4
HELIUM ISOTOPES
INSTABILITY
ISOTOPES
LIGHT NUCLEI
MASS TRANSFER
NUCLEI
PRANDTL NUMBER
QUANTITY RATIO
RELAXATION
STABLE ISOTOPES
SUPERFLUIDITY
ULTRALOW TEMPERATURE