Results 1 to 10 of about 344,577 (190)

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 during Head-On Interaction of Premixed Flames with Inert Walls within Turbulent Boundary Layers [PDF]

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   +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

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

Entropy generation from convective–radiative moving exponential porous fins with variable thermal conductivity and internal heat generations

open access: yesScientific Reports, 2022
The performance and thermal properties of convective–radiative rectangular and moving exponential porous fins with variable thermal conductivity together with internal heat generation are investigated.
Zia Ud Din   +3 more
doaj   +1 more source

Entropy generation of nanofluid flow in hexagonal microchannel

open access: yesJournal of Taibah University for Science, 2022
A new model for entropy generation number in hexagonal microchannel is developed going from the equation proposed by Bejan. The effect of Cu, CuO, Al2O3 and TiO2 mixed with pure water inside the microchannel is evaluated via entropy generation analysis ...
Mohamed Omri   +3 more
doaj   +1 more source

Numerical Study on Entropy Generation in Thermal Convection with Differentially Discrete Heat Boundary Conditions

open access: yesEntropy, 2018
Entropy generation in thermal convection with differentially discrete heat boundary conditions at various Rayleigh numbers (Ra) are numerically investigated using the lattice Boltzmann method.
Zhengdao Wang, Yikun Wei, Yuehong Qian
doaj   +1 more source

The effects of transient radiant flow on pipe in contact with natural convection, for developed laminar flow of fluid with high Prandtl number, on enthalpy and entropy generation [PDF]

open access: yesChemical Review and Letters, 2019
Convection flow is passed in a pipe wall possessing radiation-convection, in order to find the best case with at least enthalpy and minimum entropy generation, through pipe wall having radiant flow.
reza kakulvand
doaj   +1 more source

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