Critical point anomalies include expansion shock waves

From first-principle fluid dynamics, complemented by a rigorous state equation accounting for critical anomalies, we discovered that expansion shock waves may occur in the vicinity of the liquid-vapor critical point in the two-phase region. Due to universality of near-critical thermodynamics, the re...

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Bibliographic Details
Published in:Physics of fluids (1994) 2014-02, Vol.26 (2)
Main Authors: Nannan, N. R., Guardone, A., Colonna, P.
Format: Article
Language:English
Subjects:
Anomalies
BLOWERS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Critical point
EQUATIONS
Equations of state
EQUILIBRIUM
First principles
Fluid dynamics
FLUID MECHANICS
INTERACTIONS
Ising model
LIQUIDS
Molecular interactions
Rarefaction
SHOCK WAVES
THERMAL EXPANSION
Thermodynamic equilibrium
THERMODYNAMICS
VAPORS
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Summary:From first-principle fluid dynamics, complemented by a rigorous state equation accounting for critical anomalies, we discovered that expansion shock waves may occur in the vicinity of the liquid-vapor critical point in the two-phase region. Due to universality of near-critical thermodynamics, the result is valid for any common pure fluid in which molecular interactions are only short-range, namely, for so-called 3-dimensional Ising-like systems, and under the assumption of thermodynamic equilibrium. In addition to rarefaction shock waves, diverse non-classical effects are admissible, including composite compressive shock-fan-shock waves, due to the change of sign of the fundamental derivative of gasdynamics.
ISSN:1070-6631
1089-7666
DOI:10.1063/1.4863555