Results 51 to 60 of about 110,340 (304)

Method for the evaluation of minor losses in pulsatile laminar fluid flow

EPJ Web of Conferences, 2014
This article focuses on description and evaluation of the size of the minor losses in pulsatile laminar flow. It describes a method for determination of minor losses with respect to the phase delay between pressure waveforms and flow waveforms. The whole
Netřebská H., Matěcha J., Schmirler M., Manoch L., Adamec J.   +4 more
doaj   +1 more source

General method of calculating annular laminar pressure drop of drilling fluids with different rheological models

Petroleum Exploration and Development, 2013
Traditional annular laminar flow analysis method applied in drilling engineering has poor accuracy and does not apply to complicated rheological models.
Qi PENG, Honghai FAN, Haobo ZHOU, Chaowei LI, Xuyue CHEN, Echuan WANG, Zhi YE   +6 more
doaj   +1 more source

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

Advanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič, G. Lukin, H. Torkashvand, A. Kerschbaum, M. Müller, S. Besendörfer, J. Heitmann, J. Friedrich   +7 more
wiley   +1 more source

Changing of energy dissipation in the transition of laminar flow to turbulence (rus) [PDF]

Инженерно-строительный журнал, 2011
Under the same fixed dynamical boundary conditions the energy dissipation in laminar and turbulent flow are compared. As examples the flow past a plate and the flow through a pipe are considered.
Girgidov A.D.
doaj  

Heat Transfer Enhancement of TiO2/Water Nanofluid at Laminar and Turbulent Flows: A Numerical Approach for Evaluating the Effect of Nanoparticle Loadings

Energies, 2018
Titania-based nanofluid flowing inside a circular tube under the boundary condition of a horizontal uniformly heated wall was investigated numerically for both laminar and turbulent flows.
Budi Kristiawan, Budi Santoso, Agung Tri Wijayanta, Muhammad Aziz, Takahiko Miyazaki   +4 more
doaj   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

Advanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele, Hossein Ipakchi, Tizazu H. Mekonnen   +2 more
wiley   +1 more source

Coupling Between Thermal Oscillations in the Surface of a Micro-Cylinder and Vortex Shedding [PDF]

, 2007
his article studies the coupling between prescribed thermal oscillations in the surface of a micro-cylinder and vortex shedding. We deal with the unsteady, laminar, compressible flow regime where the aerodynamics forces have a periodic behavior.
J. L. Montanes, Velázquez, A., A. Velazquez, Linares, B., Montañés García, José Luis, B. Linares   +5 more
core   +2 more sources

Machine Learning‐Supported Analysis for Predicting and Visualizing Nonlinear Relationships Between Material Properties in Electroplated Chromium Layers

Advanced Engineering Materials, EarlyView.
This study applies machine learning regression to predict chromium layer thickness in decorative trivalent chromium electroplating, using 441 experiments from laboratory‐scale (1L) and pilot‐scale (14L) setups. Tree‐based models, particularly CatBoost, outperformed linear regression by capturing nonlinear parameter interactions (R2$R^2$ up to 0.77 ...
Christoph Baumer, Christopher Mai, Luca Eisentraut, Andreas Bund, Ricardo Buettner   +4 more
wiley   +1 more source

Defect Evolution and Mechanical Performance of Fused Filament Fabrication‐Manufactured 17‐4PH Stainless Steel Revealed by X‐Ray Computed Tomography

Advanced Engineering Materials, EarlyView.
X‐ray computed tomography reveals how process‐induced defects evolve from green to sintered states in Fused Filament Fabrication (FFF)‐manufactured 17‐4PH stainless steel. Internal porosity, weakest cross‐sections, and fracture locations show strong correlation with tensile performance, demonstrating the potential of computed tomography (CT)‐based ...
György Ledniczky, Márk Sárközi, Ibolya Zsoldos, Zoltán Weltsch   +3 more
wiley   +1 more source

Characterization of the Behavior of Confined Laminar Round Jets [PDF]

, 2013
Laminar jets have been very important in the understanding of fluid dynamics in practical applications. Several examples include expansions in pipes and flow of gas into a large plenum.
Landfried, Douglas Tyler
core