Results 11 to 20 of about 2,934,371 (304)

Numerical Study on Entropy Generation of the Multi-Stage Centrifugal Pump [PDF]

open access: yesEntropy, 2022
The energy loss of the multi-stage centrifugal pump was investigated by numerical analysis using the entropy generation method with the RNG k-ε turbulence model.
Baoxin Fan   +3 more
doaj   +2 more sources

An Entropy Generation Rate Model for Tropospheric Behavior That Includes Cloud Evolution [PDF]

open access: yesEntropy, 2023
A postulate that relates global warming to higher entropy generation rate demand in the tropospheric is offered and tested. This article introduces a low-complexity model to calculate the entropy generation rate required in the troposphere.
Jainagesh A. Sekhar
doaj   +2 more sources

Entropy generation of nanofluid flow in a microchannel heat sink

open access: yesResults in Physics, 2018
Present study aims to investigate the effects of the presence of nano sized TiO2 particles in the base fluid on entropy generation rate in a microchannel heat sink.
Eyuphan Manay   +2 more
doaj   +3 more sources

Entropy Generation on MHD Slip Flow Over a Stretching Cylinder with Heat Generation/Absorption [PDF]

open access: yesInternational Journal of Applied Mechanics and Engineering, 2018
In the present study, we have investigated entropy generation on a magnetohydrodynamic fluid flow and heat transfer over a stretching cylinder with a porous medium in slip flow regime. A uniform heat source and radiation is also considered.
S. Jain, S. Bohra
doaj   +2 more sources

Entropy Generation Methodology for Defect Analysis of Electronic and Mechanical Components—A Review

open access: yesEntropy, 2020
Understanding the defect characterization of electronic and mechanical components is a crucial step in diagnosing component lifetime. Technologies for determining reliability, such as thermal modeling, cohesion modeling, statistical distribution, and ...
Miao Cai   +7 more
doaj   +2 more sources

Entropy Generation Analysis of Laminar Flows of Water-Based Nanofluids in Horizontal Minitubes under Constant Heat Flux Conditions [PDF]

open access: yesEntropy, 2018
During the last decade, second law analysis via entropy generation has become important in terms of entropy generation minimization (EGM), thermal engineering system design, irreversibility, and energy saving.
Mehrdad Karimzadehkhouei   +5 more
doaj   +2 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

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

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

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