Results 61 to 70 of about 174,040 (347)

Turbulence Fluctuations and New Universal Realizability Conditions in Modelling

, 1996
General turbulent mean statistics are shown to be characterized by a variational principle. The variational functionals, or ``effective actions'', have experimental consequences for turbulence fluctuations and are subject to realizability conditions of ...
A. Juneja, D. C. Haworth, E. Lorenz, Francis J. Alexander, G. Comte-Bellot, G. L. Eyink, G. L. Eyink, Gregory L. Eyink, H. Chen, I. Proudman, L. Onsager, L. Onsager, R. H. Kraichnan, R. H. Kraichnan, R. H. Kraichnan, S. A. Orszag, S. B. Pope, T. Gotoh, W. C. Reynolds, Y. Kimura   +19 more
core   +1 more source

A new data assimilation procedure to develop a debris flow run-out model [PDF]

, 2015
Parameter calibration is one of the most problematic phases of numerical modeling since the choice of parameters affects the model\u2019s reliability as far as the physical problems being studied are concerned. In some cases, laboratory tests or physical
Bossi, G., Brezzi, Lorenzo, Cola, Simonetta, Gabrieli, Fabio, Marcato, G., Pastor, M.   +5 more
core   +1 more source

The Cuttlebone Blueprint for Multifunctional Metamaterials: Design Taxonomy, Functional Decoupling, and Future Horizons

Advanced Functional Materials, EarlyView.
Cuttlebone‐inspired metamaterials exploit a septum‐wall architecture to achieve excellent mechanical and functional properties. This review classifies existing designs into direct biomimetic, honeycomb‐type, and strut‐type architectures, summarizes governing design principles, and presents a decoupled design framework for interpreting multiphysical ...
Xinwei Li, Zhendong Li
wiley   +1 more source

Optimising Physics-Informed Neural Network Solvers for Turbulence Modelling: A Study on Solver Constraints Against a Data-Driven Approach

Fluids
Physics-informed neural networks (PINNs) have emerged as a promising approach for simulating nonlinear physical systems, particularly in the field of fluid dynamics and turbulence modelling.
William Fox, Bharath Sharma, Jianhua Chen, Marco Castellani, Daniel M. Espino   +4 more
doaj   +1 more source

Compressible Two-Phase Viscous Flow Investigations of Cavitation Dynamics for the ITTC Standard Cavitator

Applied Sciences, 2020
In this paper, the ITTC Standard Cavitator is numerically investigated in a cavitation tunnel. Simulations at different cavitation numbers are compared against experiments conducted in the cavitation tunnel of SVA Potsdam.
Ville M. Viitanen, Tuomas Sipilä, Antonio Sánchez-Caja, Timo Siikonen   +3 more
doaj   +1 more source

Direct Numerical Simulations of Turbulent Flow over Low-Pressure Turbine Blades with Aeroelastic Vibrations and Inflow Wakes

Energies, 2023
In the present work, direct numerical simulation is employed to investigate the unsteady flow characteristics and energy performance of low-pressure turbines (LPT) by considering the blades aeroelastic vibrations and inflow wakes.
Mahdi Erfanian Nakhchi, Shine Win Naung, Mohammad Rahmati   +2 more
doaj   +1 more source

Validating modelling assumptions of alpha particles in electrostatic turbulence

, 2014
To rigorously model fast ions in fusion plasmas, a non-Maxwellian equilibrium distribution must be used. In the work, the response of high-energy alpha particles to electrostatic turbulence has been analyzed for several different tokamak parameters.
Abel, Ian, Dorland, William, Highcock, Edmund, Wilkie, George   +3 more
core   +1 more source

Bioprinting Organs—Science or Fiction?—A Review From Students to Students

Advanced Healthcare Materials, EarlyView.
Bioprinting artificial organs has the potential to revolutionize the medical field. This is a comprehensive review of the bioprinting workflow delving into the latest advancements in bioinks, materials and bioprinting techniques, exploring the critical stages of tissue maturation and functionality.
Nicoletta Murenu, Camilla Mussoni, Mateo S. Andrade Mier, Paula Buettner, Nathaly Chicaiza‐Cabezas, Yi‐Yu Robin Dai, Jessica Faber, Maren Fiedler, Zan Lamberger, Xuen Jen Ng, Vanessa Moessler, Anna Rederer, Jonas Roeder, Sabrina Stecher, Katinka Theis, Jeanette Weigelt, Silvia Budday, Gregor Lang, Natascha Schaefer   +18 more
wiley   +1 more source

A Sacrificial 3D Printed Vessel‐on‐Chip Demonstrates a Versatile Approach to Model Granulation Tissue

Advanced Healthcare Materials, EarlyView.
A novel method that combines 3D printing and organ‐on‐chip technology enables the creation of hollow channels lined with endothelial cells through a fibroblast‐populated connective tissue matrix. The model supports stable metabolic culture conditions, angiogenic sprouting, and immune cell migration, thereby demonstrating an easy and versatile method to
Jonas Jäger, Phil Berger, Andrew I. Morrison, Hendrik Erfurth, Maria Thon, Eva‐Maria Dehne, Susan Gibbs, Jasper J. Koning   +7 more
wiley   +1 more source

DDES of Wetted and Cavitating Marine Propeller for CHA Underwater Noise Assessment

Journal of Marine Science and Engineering, 2018
In this paper we present results of delayed detached eddy simulation (DDES) and computational hydroacoustics (CHA) simulations of a marine propeller operating in a cavitation tunnel.
Ville M. Viitanen, Antti Hynninen, Tuomas Sipilä, Timo Siikonen   +3 more
doaj   +1 more source