1.

Record Nr.

UNINA990008093920403321

Autore

Iwanami, Atsuko

Titolo

Memoria et oblivio : die entwicklung des begriffs memoria in bischofs- und herrscherunkunden des hochmittelalters / Atsuko Iwanami

Pubbl/distr/stampa

Berlin : Duncker and Humblot, 2004

ISBN

3-428-11418-3

Descrizione fisica

196 p. ; 23 cm

Collana

Berliner historische studien ; 36

Locazione

DDR

Collocazione

Direz. I-002

Lingua di pubblicazione

Tedesco

Formato

Materiale a stampa

Livello bibliografico

Monografia

2.

Record Nr.

UNINA9911011654303321

Autore

Mongiovì Maria Stella

Titolo

Non-equilibrium Thermodynamics of Superfluid Helium and Quantum Turbulence : The Richness of Non-Fourier Heat Transport / / by Maria Stella Mongiovì, David Jou, Michele Sciacca

Pubbl/distr/stampa

Cham : , : Springer Nature Switzerland : , : Imprint : Springer, , 2025

ISBN

3-031-85148-X

Edizione

[1st ed. 2025.]

Descrizione fisica

1 online resource (480 pages)

Collana

UNIPA Springer Series, , 2366-7524

Altri autori (Persone)

JouDavid

SciaccaMichele

Disciplina

621.4021

Soggetti

Thermodynamics

Heat engineering

Heat - Transmission

Mass transfer

Quantum theory

Condensed matter

Engineering Thermodynamics, Heat and Mass Transfer

Quantum Physics

Condensed Matter Physics



Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Nota di contenuto

-- Introduction -- The two-fluid model of superfluid hydrodynamics -- The one-fluid extended model -- Superfluid hydrodynamics in rotating systems -- Turbulence in superfluids -- Coupled heat and vortex flows -- Coupling between mass flow, heat flux and vortices -- Microscopic approach to Helium II -- Quantized vortices -- Classical vs quantum turbulence -- Thermodynamics of vortex tangles and of cosmic strings -- Perspectives and suggestions.

Sommario/riassunto

This book puts together non-equilibrium thermodynamics, heat transport properties of superfluid He II, and thermodynamic and dynamic aspects of quantum turbulence. A one-fluid extended model of superfluid helium, with heat flux as an additional independent variable, is presented and compared with the two-fluid model, to explore how both models complement each other. Important features arise in rotating situations and in superfluid turbulence, characterized by quantized vortices leading to strong nonlinearities between heat flux and temperature gradient. The dynamics of vortex lines and their interaction with heat dynamics, a central topic in superfluid turbulence, is dealt with by introducing the vortex line density as an independent variable and writing its dynamical equations, considering the transitions from laminar to turbulent flows and from diffusive to ballistic regimes. Classical and quantum turbulence are compared from a mesoscopic view and from their energy spectra. The work also explores some parallelisms of quantum vortex thermodynamics with cosmic string thermodynamics and black-hole thermodynamics, exhibiting duality connections amongst them. It emphasizes didactical views over specialistic details, and may be used as an introduction to nonequilibrium thermodynamics of superfluid helium and its heat transport properties (second sound, nonlocal transport, nonlinear connections with quantum turbulence). The book is useful to researchers in superfluid helium, in heat transport, and in thermodynamics of cosmic strings and black holes. The diversity and complexity of its several physical equations will be inspiring for researchers in mathematical physics.