Results 11 to 20 of about 75,414 (250)

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

CFD/RBD Numerical Simulation Research on the Process of Buried Aviation Weapon Launch [PDF]

open access: yesHangkong bingqi, 2021
Because of its special configuration, the flying wing layout aircraft shows a big difference in performance from conventional aircraft. Embedded weapon cabin can help fighters improve stealth performance, but the door interference and the flow under the ...
Jin Chenhui, Huai Yang, Chen Xin, Wang Gang
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

Computational fluid dynamics: Science and tool [PDF]

open access: yesThe Mathematical Intelligencer, 2006
The science of flows of gases and liquids is fluid dynamics, a subdiscipline of physics . No courses in fluid dynamics are given in highschool, as it requires too much mathematical back ground. Fluid dynamics is taught at university and at engineering colleges, for one cannot ignore fluid dynamics if one wants to design an aircraft, a rocket, a ...
openaire   +2 more sources

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

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

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

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

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

Insights into Flexible Bioinspired Fins for Unmanned Underwater Vehicle Systems through Deep Learning

open access: yesBiomimetics
The last few decades have led to the rise of research focused on propulsion and control systems for bio-inspired unmanned underwater vehicles (UUVs), which provide more maneuverable alternatives to traditional UUVs in underwater missions. Recent work has
Brian Zhou   +4 more
doaj   +1 more source

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