Transport properties of fluids in the critical region

Journal Article · Thu Apr 01 04:00:00 EST 1993 · Bulletin of the American Physical Society

OSTI ID:243774

Luettmer-Strathmann, J; Sengers, J V

Transport properties of fluids in the critical region can be represented by a sum of two terms: the critical enhancement, which asymptotically close to the critical point obeys a power law in the reduced temperature, and the background part, which is independent of critical fluctuations. Although the critical enhancement is dominant only in the vicinity of the critical point and vanishes far away from it, its contributions are considerable over a wide range of temperatures and densities. Using the crossover model for the transport properties of fluids by Olchowy and Sengers the authors describe the thermal conductivity, the thermal diffusivity and the viscosity of a number of fluids. The results are presented with a special emphasis on the region in which the critical enhancement gives a sizeable contribution.

• DOE Contract Number: FG05-88ER13902
• OSTI ID: 243774
• Report Number(s): CONF-9304297--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 2 Vol. 38; ISSN BAPSA6; ISSN 0003-0503
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRITICAL PRESSURE
CRITICAL TEMPERATURE
FLUIDS
PHASE TRANSFORMATIONS
THERMAL CONDUCTIVITY
THERMAL DIFFUSIVITY
VISCOSITY