Results 21 to 30 of about 8,575 (265)

Numerical Study on the Heat Transfer Characteristics of Cu-Water and TiO2-Water Nanofluid in a Circular Horizontal Tube

open access: yesEnergies, 2023
A numerical simulation of convective heat transfer coefficient (hconv) was studied with Cu-Water and TiO2-Water nanofluids flowing through a circular tube subjected to uniform wall heat flux boundary conditions under laminar and turbulent regimes.
Jefferson Raja Bose   +4 more
doaj   +1 more source

Numerical Study of Entropy Generation in a Flowing Nanofluid Used in Micro- and Minichannels

open access: yesEntropy, 2013
This article mainly concerns theoretical research on entropy generation influences due to heat transfer and flow in nanofluid suspensions. A conventional nanofluid of alumina-water (Al2O3-H2O) was considered as the fluid model.
Mohammadreza Hassan   +6 more
doaj   +1 more source

Flow Statistics in the Transitional Regime of Plane Channel Flow

open access: yesEntropy, 2020
The transitional regime of plane channel flow is investigated above the transitional point below which turbulence is not sustained, using direct numerical simulation in large domains.
Pavan V. Kashyap   +2 more
doaj   +1 more source

Fluid Flow Development in a Pipe as a Demonstration of a Sequential Change in Its Rheological Properties

open access: yesApplied Sciences, 2022
The sequence of the process of changing the velocity profiles and the laws of resistance during the flow of a fluid in a pipe is considered. With the increasing of the Reynolds number, we obtain the transition of the flow regime from laminar to turbulent.
Dmitry Nikushchenko   +2 more
doaj   +1 more source

Experimental study of distribution law of shields curve in laminar regime

open access: yesShui kexue jinzhan, 2015
In order to study the distribution law of Shields curve in laminar regime,the critical tractive force for the onset motion of uniform non-cohesive glass beads is investigated based on the CCD (charge coupled device) imaging technology combined with laser
HONG Anyu, WANG Zhengzhong, ZHAO Yanfeng
doaj   +1 more source

A Direct Numerical Simulation-Based Analysis of Entropy Generation in Turbulent Premixed Flames

open access: yesEntropy, 2013
A compressible single step chemistry Direct Numerical Simulation (DNS) database of freely propagating premixed flames has been used to analyze different entropy generation mechanisms.
Richard Farran, Nilanjan Chakraborty
doaj   +1 more source

Numerical Analysis of Heat Transfer and Fluid Flow through Twisted Hexagonal and Square Duct and their Comparisons

open access: yesChemical Engineering Transactions, 2018
The purpose of this study was to investigate the heat transfer and friction factor characteristics for hexagonal twisted duct. Numerical simulations were used to study the swirling flow inside a twisted duct of hexagonal cross section cooled by using ...
Shambhu Kumar Mahato   +3 more
doaj   +1 more source

A Comparative CFD Study on Laminar and Turbulent Flow Fields in Dual-Rushton Turbine Stirred Vessels

open access: yesJournal of Applied Fluid Mechanics, 2020
A computational fluid dynamics(CFD) simulation was carried out to study on flow field characteristics in dual-Rusthton turbine stirred vessels in laminar and turbulent regimes. Model validation was conducted using experimental data in the literature. The
L. C. Li   +3 more
doaj  

Modal Decomposition of Synthetic Jet Flow Based on CFD Computation

open access: yesEPJ Web of Conferences, 2015
The article analyzes results of numerical simulation of synthetic jet flow using modal decomposition. The analyzes are based on the numerical simulation of axisymmetric unsteady laminar flow obtained using ANSYS Fluent CFD code.
Hyhlík Tomáš, Netřebská Hana
doaj   +1 more source

Laminar-Turbulent Transition Localization in Thermographic Flow Visualization by Means of Principal Component Analysis

open access: yesApplied Sciences, 2021
Thermographic flow visualization is a contactless, non-invasive technique to visualize the boundary layer flow on wind turbine rotor blades, to assess the aerodynamic condition and consequently the efficiency of the entire wind turbine.
Daniel Gleichauf   +3 more
doaj   +1 more source

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