Results 11 to 20 of about 89,236 (296)

Evaluation and optimization of H2 and C2H4 production in piston engines via an adjoint-based approach

open access: yesApplications in Energy and Combustion Science, 2023
In the context of the energy transition, efficient energy systems are desired. One promising approach is the use of piston engines for energy and species conversion.
Mathias Lemke   +3 more
doaj   +1 more source

Nanoparticle shape effects on squeezed MHD flow of water based Cu, Al2O3 and SWCNTs over a porous sensor surface

open access: yesAlexandria Engineering Journal, 2018
Impact of nanoparticle shape on the squeezed MHD flow of water based metallic nanoparticles over a porous sensor surface in the presence of heat source has been investigated.
R. Kandasamy   +2 more
doaj   +1 more source

Study on Numerical Algorithm of the N-S Equation for Multi-Body Flows around Irregular Disintegrations in Near Space

open access: yesAerospace, 2022
There has been a concern that the accurate numerical simulation of multi-body flow, which is caused by the multiple disintegrations of expired spacecraft re-entering into the near space, has a critical bottleneck impact on the falling area of the ...
Zheng Han   +4 more
doaj   +1 more source

Cfd Simulation of Wall Impingement of Tear Shape Viscoplastic Drops Utilizing Openfoam®

open access: yesApplied Rheology, 2013
The main objective of this study is to get insight into the dynamic behavior of viscoplastic drop in impingement process in which the Capillary number is greater than one.
Noroozi S.   +2 more
doaj   +1 more source

Thermal Characterization of Eicosane/Graphite Nano-Composite-Based Phase Change Material [PDF]

open access: yesJournal of Renewable Energy and Environment, 2023
Phase Change Materials (PCMs) have received much consideration as thermal energy storage systems due to their high storage capacity. However, their heat transfer rate is limited because of the low thermal conductivity.
Ala Moradi   +4 more
doaj   +1 more source

Effect of Bubble/Droplet Morphology and Slippage on Attachment Induction Time in Deoiling Flotation Process

open access: yesJournal of Chemical and Petroleum Engineering, 2013
A modified model has been analytically developed to describe the induction time of an elliptic air bubble in contact with an elliptic hydrophobic oil droplet.
Mona Eftekhardadkhah   +1 more
doaj   +1 more source

Stability of Optimal Controls for the Stationary Boussinesq Equations

open access: yesInternational Journal of Differential Equations, 2011
The stationary Boussinesq equations describing the heat transfer in the viscous heat-conducting fluid under inhomogeneous Dirichlet boundary conditions for velocity and mixed boundary conditions for temperature are considered.
Gennady Alekseev, Dmitry Tereshko
doaj   +1 more source

Derivation of Three-Derivative Two-Step Runge–Kutta Methods

open access: yesMathematics
In this paper, we develop explicit three-derivative two-step Runge–Kutta (ThDTSRK) schemes, and propose a simpler general form of the order accuracy conditions (p≤7) by Albrecht’s approach, compared to the order conditions in terms of rooted trees.
Xueyu Qin, Jian Yu, Chao Yan
doaj   +1 more source

Strong Stability Preserving Two-Derivative Two-Step Runge-Kutta Methods

open access: yesMathematics
In this study, we introduce the explicit strong stability preserving (SSP) two-derivative two-step Runge-Kutta (TDTSRK) methods. We propose the order conditions using Albrecht’s approach, comparing to the order conditions expressed in terms of rooted ...
Xueyu Qin, Zhenhua Jiang, Chao Yan
doaj   +1 more source

Experimental study on artificial environment to promote onset of turbulence

open access: yesJournal of Fluid Science and Technology, 2020
A wind tunnel experiment was performed to investigate the requirements for providing a suitable environment for easily creating a localized turbulent region in a laminar boundary layer.
Yukizumi YANAGISAWA   +3 more
doaj   +1 more source

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