Results 11 to 20 of about 4,290,745 (350)

Entropy Generation Rates in Two-Dimensional Rayleigh–Taylor Turbulence Mixing

open access: yesEntropy, 2018
Entropy generation rates in two-dimensional Rayleigh–Taylor (RT) turbulence mixing are investigated by numerical calculation. We mainly focus on the behavior of thermal entropy generation and viscous entropy generation of global quantities with ...
Xinyu Yang   +4 more
doaj   +2 more sources

Generalized Entropy Generation Expressions in Gases [PDF]

open access: yesEntropy, 2019
In this study, we generalize our previous methods for obtaining entropy generation in gases without the need to carry through a specific expansion method, such as the Chapman–Enskog method.
Michael H. Peters, Michael H. Peters
core   +4 more sources

The effect of nanoparticle shape on hydrothermal performance and entropy generation of boehmit alumina nanofluid in a cylindrical heat sink with helical minichannels [PDF]

open access: yesJournal of Heat and Mass Transfer Research, 2022
In the present paper, heat transfer, fluid flow characteristics and entropy generation of boehmite alumina nanofluid flowing through a cylindrical helical minichannels heat sink are examined numerically.
Alireza Falahat, Reza Bahoosh
doaj   +1 more source

Thermodynamics Irreversibilities Analysis of Oxy-Fuel Diffusion Flames: The Effect of Oxygen Concentration

open access: yesEntropy, 2022
In studies on the combustion process, thermodynamic analysis can be used to evaluate the irreversibility of the combustion process and improve energy utilization efficiency.
Huibo Yan   +6 more
doaj   +1 more source

Composability and generalized entropy [PDF]

open access: yesPhysics Letters A, 1999
We address in this paper how tightly the composability nature of systems: $S_{A+B} =Ω(S_A, S_B)$ constrains definition of generalized entropies and investigate explicitly the composability in some ansatz of the entropy form.
Hotta, M., Joichi, I.
openaire   +2 more sources

ORDERS OF GROWTH AND GENERALIZED ENTROPY [PDF]

open access: yesJournal of the Institute of Mathematics of Jussieu, 2021
AbstractWe construct the complete set of orders of growth and define on it the generalized entropy of a dynamical system. With this object, we provide a framework wherein we can study the separation of orbits of a map beyond the scope of exponential growth. We show that this construction is particularly useful for studying families of dynamical systems
Javier Correa, Enrique R. Pujals
openaire   +2 more sources

Entropy Generation during Head-On Interaction of Premixed Flames with Inert Walls within Turbulent Boundary Layers

open access: yesEntropy, 2022
The statistical behaviours of different entropy generation mechanisms in the head-on interaction of turbulent premixed flames with a chemically inert wall within turbulent boundary layers have been analysed using Direct Numerical Simulation data.
Sanjeev Kr. Ghai   +3 more
doaj   +1 more source

Entropy generation and dissipative heat transfer analysis of mixed convective hydromagnetic flow of a Casson nanofluid with thermal radiation and Hall current

open access: yesScientific Reports, 2021
The present article provides a detailed analysis of entropy generation on the unsteady three-dimensional incompressible and electrically conducting magnetohydrodynamic flow of a Casson nanofluid under the influence of mixed convection, radiation, viscous
A. Sahoo, R. Nandkeolyar
semanticscholar   +1 more source

Analysis of Entropy Generation and Potential Inhibition in an Aeroengine System Environment

open access: yesInternational Journal of Aerospace Engineering, 2022
From a system perspective, the entropy generation of an aeroengine is directly related to the thermal efficiency when the Brayton cycle pressure ratio and maximum temperature remain constant.
Xiaojing Liu   +6 more
doaj   +1 more source

Generalized Entropies, Variance and Applications [PDF]

open access: yesEntropy, 2020
The generalized cumulative residual entropy is a recently defined dispersion measure. In this paper, we obtain some further results for such a measure, in relation to the generalized cumulative residual entropy and the variance of random lifetimes. We show that it has an intimate connection with the non-homogeneous Poisson process.
Abdolsaeed Toomaj, Antonio Di Crescenzo
openaire   +4 more sources

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