Results 11 to 20 of about 4,117 (102)

Markov chain Monte Carlo with Gaussian processes for fast parameter estimation and uncertainty quantification in a 1D fluid-dynamics model of the pulmonary circulation. [PDF]

open access: yesInt J Numer Method Biomed Eng, 2021
Uncertainty quantification in a complex physiological model of the pulmonary circulation can be made computationally feasible by combining state‐of‐the‐art numerical Bayesian methods with statistical emulation using Gaussian Processes. A comparative assessment in terms of computational efficiency of several novel Bayesian (MCMC) algorithms identifies ...
Paun LM, Husmeier D.
europepmc   +2 more sources

Formulations and Diffusivity Coefficients of the 2D Depth‐Averaged Advection‐Diffusion Models: A Literature Review

open access: yesWater Resources Research, Volume 59, Issue 12, December 2023., 2023
Abstract This article reviews the mathematical formulations of the depth‐integrated advection‐diffusion equation used so far for modeling scalar transport and mixing in shallow environmental flows. It also summarizes the main approaches developed to evaluate the diffusivity tensor in such models.
Emmanuel Mignot   +2 more
wiley   +1 more source

The Impact of Critical Flutter Velocity in Composite Wind Turbine Blade with Prebend Condition

open access: yesMathematical Problems in Engineering, Volume 2022, Issue 1, 2022., 2022
The present work focuses on the effect of flutter in prebend 100 m horizontal axis wind turbine blade (HAWT) within the stability limits. The study was carried out with an advanced beam model for idyllic structure in a DU‐97‐W‐300 cross‐sectional area. A Galerkin type of approach has been applied to derive the equations, and the analysis was performed ...
H. S. Sunil Kumar   +8 more
wiley   +1 more source

Wind farm control ‐ Part I: A review on control system concepts and structures

open access: yesIET Renewable Power Generation, Volume 15, Issue 10, Page 2085-2108, 27 July 2021., 2021
Abstract Wind farm control design is a recently new area of research that has rapidly become a key enabler for the development of large wind farm projects and their safe and efficient connection to the power grid. A comprehensive review of the intense research conducted in this area over the last 10 years is presented.
Leif Erik Andersson   +4 more
wiley   +1 more source

Nuclear Data Uncertainty Quantification and Propagation for Safety Analysis of Lead‐Cooled Fast Reactors

open access: yesScience and Technology of Nuclear Installations, Volume 2020, Issue 1, 2020., 2020
In this study, the Best Estimate Plus Uncertainty (BEPU) approach is developed for the systematic quantification and propagation of uncertainties in the modelling and simulation of lead‐cooled fast reactors (LFRs) and applied to the demonstration LFR (DLFR) initially investigated by Westinghouse. The impact of nuclear data uncertainties based on ENDF/B‐
Ishita Trivedi   +5 more
wiley   +1 more source

Fully Parametric Optimization Designs of Wing Components

open access: yesInternational Journal of Aerospace Engineering, Volume 2020, Issue 1, 2020., 2020
An optimization technique called shape‐linked optimization, which is different from the traditional optimization method, is introduced in this paper. The research introduces an updated wing optimization design in an effort to adapt to continuous structure changes and shapes while optimizing for a lighter weight of the structure. The changing tendencies
Zhendong Hu   +3 more
wiley   +1 more source

Using surface sensitivity from mesh adjoint solution for transonic wing drag reduction [PDF]

open access: yes, 2016
Shock control bumps are a promising device for improving the aerodynamic efficiency of transonic aircraft. From the literature, the peak location and bump height are the most sensitive parameters, therefore the deployment position and size of the shock ...
Hinchliffe, B.L., Qin, N.
core   +1 more source

State-of-the-art in aerodynamic shape optimisation methods [PDF]

open access: yes, 2018
Aerodynamic optimisation has become an indispensable component for any aerodynamic design over the past 60 years, with applications to aircraft, cars, trains, bridges, wind turbines, internal pipe flows, and cavities, among others, and is thus relevant ...
Skinner, S.N., Zare-Behtash, H.
core   +1 more source

Survey of data assimilation methods for convective‐scale numerical weather prediction at operational centres

open access: yesQuarterly Journal of the Royal Meteorological Society, Volume 144, Issue 713, Page 1218-1256, April 2018 Part B., 2018
Data assimilation methods for convective‐scale numerical weather prediction at operational centres are surveyed. It is demonstrated that the quality of forecasts based on initial data from convective‐scale data assimilation is significantly better than the quality of forecasts from simple downscaling.
Nils Gustafsson   +23 more
wiley   +1 more source

Nanobeams and AFM Subject to Piezoelectric and Surface Scale Effects

open access: yesAdvances in Mathematical Physics, Volume 2018, Issue 1, 2018., 2018
Vibration dynamics of elastic beams that are used in nanotechnology, such as atomic force microscope modeling and carbon nanotubes, are considered in terms of a fundamental response within a matrix framework. The modeling equations with piezoelectric and surface scale effects are written as a matrix differential equation subject to tip‐sample general ...
Julio Claeyssen   +4 more
wiley   +1 more source

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