Results 31 to 40 of about 3,082,804 (300)

Teaching Fluid Mechanics and Thermodynamics Simultaneously through Pipeline Flow Experiments

open access: yesFluids, 2019
Entropy and entropy generation are abstract and illusive concepts for undergraduate students. In general, students find it difficult to visualize entropy generation in real (irreversible) processes, especially at a mechanistic level.
Rajinder Pal
doaj   +1 more source

Numerical studies for effect of geometrical parameters on water jet pump performance via entropy generation analysis

open access: yesJournal of Mechanical Engineering and Sciences, 2023
This paper presented an implementation of entropy generation analysis in the main flow field of a water jet pump via the CFD method. This study aimed to identify the inefficient location of energy conversion and to analyse entropy generation sources in ...
Muhammad Penta Helios   +1 more
doaj   +1 more source

Deformed Generalization of the Semiclassical Entropy [PDF]

open access: yesEntropy, 2008
We explicitly obtain here a novel expression for the semiclassical Wehrl’s entropy using deformed algebras built up with the q¡coherent states (see Arik and Coon [J.Math.Phys. 17, 524 (1976) and Quesne [J. Phys. A 35, 9213 (2002)]). The generalization is investigated with emphasis on i) its behavior as a function of temperature and ii) the results ...
Ferri, Gustavo L.   +5 more
openaire   +8 more sources

Quantum discord, thermal discord, and entropy generation in the minimum error discrimination strategy

open access: yes, 2019
We study the classical and quantum correlations in the minimum error discrimination (ME) of two non-orthogonal pure quantum states. In particular, we consider quantum discord, thermal discord and entropy generation.
Miguel Ángel Solís Prosser   +3 more
core   +2 more sources

Effect of non-uniform temperature distribution on entropy generation and enthalpy for the laminar developing pipe flow of a high Prandtl number fluid [PDF]

open access: yesChemical Review and Letters, 2019
In this article, Entropy generation and enthalpy are investigated on the pipe wall in developed laminar flow for 7 cases. Variation of entropy generation and enthalpy are shown along the radius.
Reza Kakulvand
doaj   +1 more source

Streaming generalized cross entropy [PDF]

open access: yesSoft Computing, 2019
We propose a new method to combine adaptive processes with a class of entropy estimators for the case of streams of data. Starting from a first estimation obtained from a batch of initial data, model parameters are estimated at each step by combining the prior knowledge with the new observation (or a block of observations).
Mario Angelelli   +2 more
openaire   +3 more sources

Entropy Generation during Turbulent Flow of Zirconia-water and Other Nanofluids in a Square Cross Section Tube with a Constant Heat Flux

open access: yesEntropy, 2014
The entropy generation based on the second law of thermodynamics is investigated for turbulent forced convection flow of ZrO2-water nanofluid through a square pipe with constant wall heat flux.
Hooman Yarmand   +6 more
doaj   +1 more source

Entropy generation analysis in supercapacitor modules based on a three-dimensional coupled thermal model

open access: yes, 2022
Efficient and sustainable thermal management systems are crucial to ensure thermal stability and a long lifespan of supercapacitors. In this work, an entropy generation analysis based on an improved coupled model is implemented for the first time, with ...
Xu, Chenxuan   +13 more
core   +1 more source

Experimental and support vector machine predictions of entropy generations and exergy efficiency of Fe3O4–SiO2/Water hybrid nanofluid in a plate heat exchanger

open access: yesHeliyon, 2023
Several experiments of Fe3O4–SiO2/water hybrid nanofluids with volumetric concentrations ranging from 0.2 % to 1.0 % circulating in the cold-side of a plate heat exchanger at flow rates ranging from 0.05 kg/s to 0.1166 kg/s are performed.
A.M. Alklaibi   +2 more
doaj   +1 more source

Transient Velocity And Steady State Entropy Generation In A Microfluidic Couette Flow Containing Charged Nano Particles [PDF]

open access: yes, 2015
An analysis has been provided to determine the transient velocity and steady state entropy generation in a microfluidic Couette flow influenced by electro-kinetic effect of charged nanoparticles.
R.S.R. Gorla   +3 more
core   +1 more source

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