Results 41 to 50 of about 735,606 (326)

Entropy generation analysis of turbulent flow in conical tubes with dimples: a numerical study

open access: yesJournal of Thermal Analysis and Calorimetry, 2023
Minimizing the entropy generation rate is one of the key performance indicators for enhancing the thermal design of heat exchangers. This paper introduces a comprehensive numerical entropy generation analysis of turbulent water flow inside—newly proposed—
A. Kaood, Ahmed Aboulmagd, A. Eldegwy
semanticscholar   +1 more source

Irreversibility analysis in Darcy-Forchheimer flow of viscous fluid with Dufour and Soret effects via finite difference method

open access: yesCase Studies in Thermal Engineering, 2021
Background and objective: Here irreversibility analysis in unsteady Darcy-Forchheimer flow of viscous fluid by a stretched sheet is examined. Lorentz force effect is considered.
Sohail A. Khan, T. Hayat, A. Alsaedi
doaj   +1 more source

Entropy generation for natural convection by heated partitions in a cavity [PDF]

open access: yes, 2008
Entropy generation for natural convection in a partitioned cavity, with adiabatic horizontal and isothermally cooled vertical walls, is studied numerically by both a FORTRAN code and the commercially available CFD-ACE software.
Famouri, M., Hooman, K.
core   +1 more source

Entropy Generation Optimization in Couple Stress Fluid Flow with Variable Viscosity and Aligned Magnetic Field

open access: yesSustainability, 2023
This study explores the influence of an inclined magnetic field and variable viscosity on the entropy generation in steady flow of a couple stress fluid in an inclined channel. The walls of the channel are stationary and non-isothermal. The fluid flow is
Geetika Saini   +7 more
semanticscholar   +1 more source

Source-Device-Independent Ultrafast Quantum Random Number Generation [PDF]

open access: yes, 2017
Secure random numbers are a fundamental element of many applications in science, statistics, cryptography and more in general in security protocols.
MARANGON, DAVIDE GIACOMO   +2 more
core   +1 more source

Recommendations and illustrations for the evaluation of photonic random number generators

open access: yes, 2017
The never-ending quest to improve the security of digital information combined with recent improvements in hardware technology has caused the field of random number generation to undergo a fundamental shift from relying solely on pseudo-random algorithms
Baumgartner, Gerald B.   +5 more
core   +2 more sources

A mathematical model for entropy generation in a Powell-Eyring nanofluid flow in a porous channel

open access: yesHeliyon, 2019
The continuous generation of entropy leads to exergy destruction which reduces the performance of a physical system. Hence, entropy minimization becomes necessary.
Hammed Abiodun Ogunseye   +1 more
doaj   +1 more source

Leakage Evaluation by Virtual Entropy Generation (VEG) Method

open access: yesEntropy, 2017
Leakage through microscale or nanoscale cracks is usually hard to observe, difficult to control, and causes significant economic loss. In the present research, the leakage in a pipe was evaluated by the virtual entropy generation (VEG) method. In virtual
Zhichao Zhang   +5 more
doaj   +1 more source

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 Rates of the Multidimensional Moran Processes and Generalizations

open access: yesCoRR, 2014
The interrelationships of the fundamental biological processes natural selection, mutation, and stochastic drift are quantified by the entropy rate of Moran processes with mutation, measuring the long-run variation of a Markov process. The entropy rate is shown to behave intuitively with respect to evolutionary parameters such as monotonicity with ...
openaire   +2 more sources

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