Inclusive curvaturelike framework for describing dissipation: Metriplectic 4-bracket dynamics
Journal Article
·
· Physical Review E
- Univ. of Texas, Austin, TX (United States)
An inclusive framework for joined Hamiltonian and dissipative dynamical systems that are thermodynamically consistent, i.e., preserve energy and produce entropy, is given. The dissipative dynamics of the framework is based on the metriplectic 4-bracket, a quantity like the Poisson bracket defined on phase space functions, but unlike the Poisson bracket has four slots with symmetries and properties motivated by Riemannian curvature. Metriplectic 4-bracket dynamics is generated using two generators, the Hamiltonian and the entropy, with the entropy being a Casimir of the Hamiltonian part of the system. The formalism includes known previous binary bracket theories for dissipation or relaxation as special cases. Rich geometrical significance of the formalism and methods for constructing metriplectic 4-brackets are explored. Many examples of both finite and infinite dimensions are given.
- Research Organization:
- Univ. of Texas, Austin, TX (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC)
- Grant/Contract Number:
- FG02-04ER54742
- OSTI ID:
- 2997874
- Alternate ID(s):
- OSTI ID: 2474584
OSTI ID: 2579600
- Journal Information:
- Physical Review E, Journal Name: Physical Review E Journal Issue: 4 Vol. 109; ISSN 2470-0053; ISSN 2470-0045
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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