Results 21 to 30 of about 346,423 (337)

Methods to Calculate Entropy Generation. [PDF]

open access: yesEntropy (Basel)
Entropy generation, formulated by combining the first and second laws of thermodynamics with an appropriate thermodynamic potential, emerges as the difference between a phenomenological entropy function and a reversible entropy function. The phenomenological entropy function is evaluated over an irreversible path through thermodynamic state space via ...
Osara JA, Bryant MD.
europepmc   +5 more sources

Heat transfer and second law analyses of forced convection in a channel partially filled by porous media and featuring internal heat sources [PDF]

open access: yes, 2015
This paper provides a comprehensive study on the heat transfer and entropy generation rates in a channel partially filled with a porous medium and under constant wall heat flux.
Karimi, Nader   +2 more
core   +1 more source

A Numerical Study on Entropy Generation in Two-Dimensional Rayleigh-Bénard Convection at Different Prandtl Number

open access: yesEntropy, 2017
Entropy generation in two-dimensional Rayleigh-Bénard convection at different Prandtl number (Pr) are investigated in the present paper by using the lattice Boltzmann Method.
Yikun Wei, Zhengdao Wang, Yuehong Qian
doaj   +1 more source

The Differential Entropy Generation Rate as a Unified Measure for Both the Stability and Efficiency of an Axial Compressor

open access: yesMachines, 2023
Stability and efficiency are the two most important performance indicators of highly loaded aviation axial compressors; however, they often cannot be achieved simultaneously.
Jingyuan Ma, Feng Lin
doaj   +1 more source

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   +1 more source

Entropies for complex systems: generalized-generalized entropies

open access: yesAIP Conference Proceedings, 2007
CTNEXT 07, no ...
Stefan Thurner   +6 more
openaire   +2 more sources

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

A thermodynamic analysis of forced convection through porous media using pore scale modeling [PDF]

open access: yes, 2016
The flow thorough porous media is analyzed from a thermodynamic perspective, with a particular focus on the entropy generation inside the porous media, using a pore scale modeling approach.
Karimi, Nader   +3 more
core   +1 more source

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

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

Home - About - Disclaimer - Privacy