scholarly journals The Character of Entropy Production in Rayleigh–Bénard Convection

Entropy ◽  
2014 ◽  
Vol 16 (9) ◽  
pp. 4960-4973 ◽  
Author(s):  
Chenxia Jia ◽  
Chengjun Jing ◽  
Jian Liu
Keyword(s):  
Entropy Production ◽  
Bénard Convection ◽  
Benard Convection ◽  
Rayleigh Benard Convection ◽  
Rayleigh Benard

scholarly journals Thermodynamic Analysis of Bistability in Rayleigh–Bénard Convection

Entropy ◽  
2020 ◽  
Vol 22 (8) ◽  
pp. 800
Author(s):  
Takahiko Ban
Keyword(s):  
Entropy Production ◽  
Thermodynamic Analysis ◽  
Bistable System ◽  
Dissipative Systems ◽  
Bénard Convection ◽  
Benard Convection ◽  
Bistable Region ◽  
Far From Equilibrium ◽  
Rayleigh Benard Convection ◽  
Rayleigh Benard

Bistability is often encountered in association with dissipative systems far from equilibrium, such as biological, physical, and chemical phenomena. There have been various attempts to theoretically analyze the bistabilities of dissipative systems. However, there is no universal theoretical approach to determine the development of a bistable system far from equilibrium. This study shows that thermodynamic analysis based on entropy production can be used to predict the transition point in the bistable region during Rayleigh–Bénard convection using the experimental relationship between the thermodynamic flux and driving force. The bistable region is characterized by two distinct features: the flux of the second state is higher than that of the first state, and the entropy production of the second state is lower than that of the first state. This thermodynamic interpretation provides new insights that can be used to predict bistable behaviors in various dissipative systems.

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