Results 11 to 20 of about 70,649 (267)

Study of the reverse transition in pipe flow

open access: yesScientific Reports, 2023
In the reverse transition in pipe flow, turbulent flow changes to less disturbed laminar flow. The entropy of the flow appears to decrease. This study examined the reverse transition experimentally and theoretically using entropy change and momentum ...
Hikaru Yokoo   +4 more
doaj   +1 more source

Salem numbers of automorphisms of K3 surfaces with Picard number $4$

open access: yesComptes Rendus. Mathématique, 2023
We construct automorphisms of positive entropy of K3 surfaces of Picard number $4$ with certain Salem numbers. We also prove that there is a fixed point free automorphism of positive entropy on a K3 surface of Picard number $4$ with Salem degree $4$.
Lee, Kwangwoo
doaj   +1 more source

Effect of a Magnetic Quadrupole Field on Entropy Generation in Thermomagnetic Convection of Paramagnetic Fluid with and without a Gravitational Field

open access: yesEntropy, 2017
Entropy generation for a paramagnetic fluid in a square enclosure with thermomagnetic convection is numerically investigated under the influence of a magnetic quadrupole field. The magnetic field is calculated using the scalar magnetic potential approach.
Er Shi   +3 more
doaj   +1 more source

MHD mixed convection and entropy generation of CNT-water nanofluid in a wavy lid-driven porous enclosure at different boundary conditions

open access: yesScientific Reports, 2022
In this study, Galerkin Finite Element Method or GFEM is used for the modeling of mixed convection with the entropy generation in wavy lid-driven porous enclosure filled by the CNT-water nanofluid under the magnetic field. Two different cases of boundary
Hameed K. Hamzah   +2 more
doaj   +1 more source

Thermal Lattice Boltzmann Simulation of Entropy Generation within a Square Enclosure for Sensible and Latent Heat Transfers

open access: yesApplied Sciences, 2015
This paper deals with the numerical simulation of heat transfer and entropy generation in a 2D square enclosure for convective melting. A thermal lattice Boltzmann method (TLBM) is used to handle the study, which has been conducted for Prandtl numbers ...
Alissar Yehya, Hassane Naji
doaj   +1 more source

Entropy generation of a hybrid nanofluid on MHD mixed convection is a lid-driven cavity with partial heating having two rounded corners [PDF]

open access: yesE3S Web of Conferences, 2021
This research aims to investigate thermal and flow behaviors and entropy generation of magnetohydrodynamic Al2O3-Cu/water hybrid nanofluid in a lid-driven cavity having two rounded corners.
Korei Zakaria, Benissaad Smail
doaj   +1 more source

Entropy Generation Due to Laminar Incompressible Forced Convection Flow Through Parallel-Plates Microchannel

open access: yesEntropy, 2004
: The entropy generation due to steady laminar forced convection fluid flow through parallel plates microchannel is investigated numerically. The effect of Knudsen, Reynolds, Prandtl, Eckert numbers and the nondimensional temperature difference on ...
Mohammad Al-Nimr   +2 more
doaj   +1 more source

A remark on entropy numbers [PDF]

open access: yesStudia Mathematica, 2022
Talagrand's fundamental result on the entropy numbers is slightly improved. Our proof uses different ideas based on results from greedy approximation.
openaire   +3 more sources

Recoverable Random Numbers in an Internet of Things Operating System

open access: yesEntropy, 2017
Over the past decade, several security issues with Linux Random Number Generator (LRNG) on PCs and Androids have emerged. The main problem involves the process of entropy harvesting, particularly at boot time.
Taeill Yoo, Ju-Sung Kang, Yongjin Yeom
doaj   +1 more source

Chebyshev Distance Entropy Combined with TODIM Method in Lq-ROFS Multiattribute Group Decision Making

open access: yesDiscrete Dynamics in Nature and Society, 2023
Linguistic q-rung orthopair fuzzy numbers (Lq-ROFNs) are composed of a set of q-rung orthopair fuzzy numbers (q-ROFNs) with membership and nonmembership degrees of linguistic variables, which can be regarded as an extension of linguistic intuitionistic ...
Yangcan Wang   +3 more
doaj   +1 more source

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