Results 71 to 80 of about 326,006 (283)

Wavelet Operational Matrices and Lagrange Interpolation Differential Quadrature-Based Numerical Algorithms for Simulation of Nanofluid in Porous Channel

Journal of Mathematics, 2022
This work analyses the features of nanofluid flow and thermal transmission (NFTT) in a rectangular channel which is asymmetric by developing two numerical algorithms based on scale-2 Haar wavelets (S2HWs), Lagrange’s interpolation differential quadrature
Aisha M. Alqahtani, Ram Jiwari
doaj   +1 more source

Strain gradient differential quadrature finite element for moderately thick micro‐plates

International Journal for Numerical Methods in Engineering, 2020
In this study, we integrate the advantages of differential quadrature method (DQM) and finite element method (FEM) to construct a C1‐type four‐node quadrilateral element with 48 degrees of freedom (DOF) for strain gradient Mindlin micro‐plates.
Bo Zhang, Heng Li, Liulin Kong, Xu Zhang, Zhipeng Feng   +4 more
semanticscholar   +1 more source

Robust Control Using a Matrix Converter to Enhance Wind Turbine Systems

Energy Science &Engineering, EarlyView.
This study uses a more efficient and effective solution to improve the operational performance of a wind turbine‐based power system. This system uses a doubly fed induction generator and relies on a matrix converter and fractional‐order proportional–integral controller.
Sihem Ghoudelbourk, Habib Benbouhenni, Adil Yahdou, Zakaria Mohamed Salem Elbarary, Nicu Bizon   +4 more
wiley   +1 more source

A space-time pseudospectral discretization method for solving diffusion optimal control problems with two-sided fractional derivatives

, 2018
We propose a direct numerical method for the solution of an optimal control problem governed by a two-side space-fractional diffusion equation. The presented method contains two main steps.
Ali, Mushtaq Salh, Bozorgnia, Farid, Khosravian-Arab, Hassan, Shamsi, Mostafa, Torres, Delfim F. M.   +4 more
core   +1 more source

Numerical algorithms for multidimensional time-fractional wave equation of distributed-order with a nonlinear source term

Advances in Difference Equations, 2018
Fractional differential equations (FDEs) of distributed-order are important in depicting the models where the order of differentiation distributes over a certain range.
Jiahui Hu, Jungang Wang, Yufeng Nie
doaj   +1 more source

A Hybrid EV Charging Architecture Integrating DC Fast Charging and Wireless Power Transfer

Energy Science &Engineering, EarlyView.
A hybrid EV charging architecture combining DC fast charging and wireless power transfer is proposed. The system achieves high efficiency, grid compliance, and reliable bidirectional operation, offering a scalable solution that enhances user convenience while paving the way for smarter, future‐ready EV charging infrastructure.
Ali Almaktoof, Mohamad Taha, Marco Adonis, Kareem Halablab   +3 more
wiley   +1 more source

A Robust and Versatile Numerical Framework for Modeling Complex Fractional Phenomena: Applications to Riccati and Lorenz Systems

Fractal and Fractional
The fractional differential quadrature method (FDQM) with generalized Caputo derivatives is used in this paper to show a new numerical way to solve fractional Riccati equations and fractional Lorenz systems.
Waleed Mohammed Abdelfattah, Ola Ragb, Mohamed Salah, Mokhtar Mohamed   +3 more
doaj   +1 more source

Efficient Numerical Framework for Geothermal Energy Production Optimization in Fracture‐Controlled Reservoirs

International Journal for Numerical Methods in Fluids, EarlyView.
We introduce an efficient open‐source numerical framework for the automated search for the placements of injection and production wells in hot fracture‐controlled reservoirs that sustainably optimize geothermal energy production. We model the reservoirs as discrete fracture networks in 3D. The fluid flow and heat transport in the reservoirs are modeled
Ondřej Pártl, Ernesto Meneses Rioseco
wiley   +1 more source

Smolyak's algorithm: A powerful black box for the acceleration of scientific computations

, 2018
We provide a general discussion of Smolyak's algorithm for the acceleration of scientific computations. The algorithm first appeared in Smolyak's work on multidimensional integration and interpolation.
A Defant, A Papageorgiou, A-L Haji-Ali, D Dũng, F Nobile, GW Wasilkowski, H Harbrecht, H-J Bungartz, I Babuška, IH Sloan, J Garcke, J Garcke, M Griebel, M Griebel, M Hegland, MB Giles, OP Maître Le, PE Kloeden, S Heinrich, S Martello, SA Smolyak, W Hackbusch   +21 more
core   +1 more source

Fast Calculation for the Flow and Heat Transfer of Tempered Fractional Maxwell Viscoelastic Fluid

International Journal for Numerical Methods in Fluids, EarlyView.
This study develops a tempered fractional Maxwell model to simulate unsteady thermal flow in viscoelastic fluids, capturing key rheological behaviors. A fast SOE‐based algorithm is proposed to improve the computational efficiency of the numerical scheme. Results reveal how key parameters influence fluid motion and heat transfer, demonstrating the model'
Yi Liu, Mochen Jiang, Libo Feng
wiley   +1 more source