Results 251 to 260 of about 188,099 (285)

Application of entropy production theory to hydro-turbine hydraulic analysis

Science China Technological Sciences, 2013
The understanding of hydraulic behavior in the hydro turbine requires the detailed study of fluid flow in the turbine. Previous methods of analyzing the numerical simulation results on the fluid machinery are short of intuitiveness on energy dissipation. In this paper, the energy dissipation was analyzed based on the entropy production theory.
RuZhi Gong   +5 more
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Classical theory of collisional entropy production

Chemical Physics, 1978
Abstract A classical dynamical theory of elementary collision processes is formulated in analogy to the quantum theory of the dynamical scattering matrix, which can be defined for a pure quantum stationary scattering state. The elements of this matrix are probability amplitudes for transitions between internal states defined for given values of a ...
openaire   +1 more source

Principles of minimum entropy production in transport theory

Journal of Physics C: Solid State Physics, 1982
Formulates in microscopic terms a principle of minimum entropy production which may alternatively be regarded as a full generalisation of Kohler's principle for the solution of the semiclassical Boltzmann equation. The principle is thus in fact a general variational principle for the expressions of Kubo type for the transport coefficients of a linear ...
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Entropy production in a non‐conservative gravitational theory

Astronomische Nachrichten, 1988
AbstractThe production of entropy is calculated in a Friedman Universe governed by a non‐conservative gravitational theory permitting the creation of matter. The calculation has two motivations, the first is that it represents a mechanism to generate the large entropy per baryon observed, and secondly, it simulates the ten dimensional mechanism for ...
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Chapter 13. Entropy Production Minimization with Optimal Control Theory

2015
This chapter discusses how to take advantage of optimal control theory to minimize the entropy production of process units, in a step-wise, practical approach. The main results from literature are discussed, e.g. the validity of the theorems of equipartition of entropy production or equipartition of forces, as approximations to the state of minimum ...
Øivind Wilhelmsen   +2 more
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Entropy production and its positivity in nonlinear response theory of quantum dynamical systems

Journal of Statistical Physics, 1988
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ojima, I., Hasegawa, H., Ichiyanagi, M.
openaire   +1 more source

On extremal entropy production in the solid-body conductance theory

Doklady Physics, 2001
It is shown that, in one-dimensional geometry, the principle of the minimum of entropy production in equilibrium final states is correct in one general situation. Two examples taken from the solid-body conductance theory are considered. For a solid body with no external loads and no regard for heat expansion, which ensures the constancy of stresses and
openaire   +1 more source

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