Results 51 to 60 of about 303 (161)

Systematic Parameter Selection for Short Fiber Polymer Composite Direct Fiber Simulation

Polymer Composites, Volume 47, Issue 7, Page 6319-6340, 10 April 2026.
Interactions of individually simulated fibers are systematically calibrated such that their orientation history agrees with the results from analytical orientation models. ABSTRACT The orientation of fibers in short discontinuous fiber reinforced polymer composites is a critical factor in determining final mechanical and thermal properties.
Jason B. Pierce, Douglas E. Smith
wiley   +1 more source

Adaptive bayesian sparse polynomial chaos expansion for voltage balance of an isolated microgrid at peak load

Renewable Energy and Sustainable Development
Microgrids (MGs) are essential for ensuring a reliable and efficient power supply, particularly in isolated or islanded regions. One of the significant challenges faced is maintaining voltage balance during peak load periods, which is complicated by ...
Sunil Kumar, Rashmi Agarwal, Harivardhagini Subhadra   +2 more
doaj   +1 more source

Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the String‐Theoretical Swampland Programme

Fortschritte der Physik, Volume 74, Issue 4, April 2026.
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley   +1 more source

Toward an Analytical Solution of the Liouville Equation via Data‐Driven Methods: Applications to Ensemble Forecasting

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 4, April 2026.
Abstract Solving probabilistic weather forecasts is challenging due to computational constraints and the nonlinear nature of Earth atmosphere. This study proposes a proof‐of‐concept to address these challenges by solving the Liouville equation, that is, the analytical solution for probabilistic forecasts, with data‐driven method.
Kai‐Chih Tseng, Ray Kuo, Yi‐An Feng
wiley   +1 more source

A preconditioning approach for improved estimation of sparse polynomial chaos expansions [PDF]

Computer Methods in Applied Mechanics and Engineering, 2018
Compressive sampling has been widely used for sparse polynomial chaos (PC) approximation of stochastic functions. The recovery accuracy of compressive sampling highly depends on the incoherence properties of the measurement matrix. In this paper, we consider preconditioning the underdetermined system of equations that is to be solved.
Negin Alemazkoor, Hadi Meidani
openaire   +3 more sources

Quantifying Parametric Influence on Cuttings Transport in Deviated Deep Wells Using Global Sensitivity Analysis Methods

Energy Science &Engineering, Volume 14, Issue 3, Page 1398-1415, March 2026.
Cuttings transport simulation workflow. ABSTRACT Efficient cuttings transport is essential for wellbore stability and minimizing non‐productive time in deviated and horizontal wells. This study applies global sensitivity analysis (GSA) to evaluate the influence of 14 drilling parameters on cuttings transport using WellPlanTM hydraulic simulations ...
Esraa A. Refaie, Said K. El‐Sayed, Ahmed Z. Noah, Mostafa M. Abdelhafiz   +3 more
wiley   +1 more source

Sparse polynomial chaos expansions of vector-valued response quantities [PDF]

, 2014
Safety, Reliability, Risk and Life-cycle Performance of Structures and ...
Blatman, Géraud, Sudret, Bruno; id_orcid0000-0002-9501-7395   +1 more
openaire   +2 more sources

Probabilistic static voltage stability margin calculation method based on multi-fidelity surrogate model

Zhejiang dianli
To address the static voltage stability margin （SVSM） calculation problem in power systems with high penetration of renewable energy and emerging loads， this paper presents a probabilistic SVSM calculation method based on a multi-fidelity surrogate model
WANG Gengyu, WANG Han, YAN Zheng, WANG Yanhong, REN Xijun, LI Zhiwei   +5 more
doaj   +1 more source

Evaluating Influence of Variable Renewable Energy Generation on Islanded Microgrid Power Flow

IEEE Access, 2018
With the proliferation of renewable energy, the uncertainty has challenged the continuous operation of microgrids; thus, it is of importance to tackle uncertainties in power system operation.
Han Wang, Zheng Yan, Xiaoyuan Xu, Kun He
doaj   +1 more source

Methods Based on Polynomial Chaos for Quadratic Delay Differential Equations With Random Parameters

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 1, March 2026.
ABSTRACT We consider systems of delay differential equations (DDEs), including a single delay and a quadratic right‐hand side. In a system, parameters are replaced by random variables to perform an uncertainty quantification. Thus the solution of the DDEs becomes a random process, which can be represented by a series of the generalised polynomial chaos.
Roland Pulch
wiley   +1 more source