Results 51 to 60 of about 210,410 (185)

Numerical Assessment of Effective Elastic Properties of Needled Carbon/Carbon Composites Based on a Multiscale Method

C
Needled carbon/carbon composites contain complex microstructures such as irregular pores, anisotropic pyrolytic carbon, and interphases between fibers and pyrolytic carbon matrices.
Jian Ge, Xujiang Chao, Haoteng Hu, Wenlong Tian, Weiqi Li, Lehua Qi   +5 more
doaj   +1 more source

Multiscale water diffusivity prediction of plain woven composites considering void defects

Science and Engineering of Composite Materials
To reveal the effects of void defects on the diffusivities of plain woven composites, a multiscale analysis framework considering the microscale and mesoscale voids is developed in this study.
Wang Meng
doaj   +1 more source

Particle-based hybrid and multiscale methods for nonequilibrium gas flows

Advances in Aerodynamics, 2019
Over the past half century, a variety of computational fluid dynamics (CFD) methods and the direct simulation Monte Carlo (DSMC) method have been widely and successfully applied to the simulation of gas flows for the continuum and rarefied regime ...
Jun Zhang, Benzi John, Marcel Pfeiffer, Fei Fei, Dongsheng Wen   +4 more
doaj   +1 more source

The Heterognous Multiscale Methods [PDF]

Communications in Mathematical Sciences, 2003
The heterogenous multiscale method (HMM) is presented as a general methodology for the efficient numerical computation of problems with multiscales and multiphysics on multigrids. Both variational and dynamic problems are considered. The method relies on an efficent coupling between the macroscopic and microscopic models.
E, Weinan, Engquist, Bjorn
openaire   +2 more sources

Cosmological Non-Gaussian Signature Detection: Comparing Performance of Different Statistical Tests

EURASIP Journal on Advances in Signal Processing, 2005
Currently, it appears that the best method for non-Gaussianity detection in the cosmic microwave background (CMB) consists in calculating the kurtosis of the wavelet coefficients.
Starck J-L, Aghanim N, Forni O, Donoho DL, Jin J   +4 more
doaj   +1 more source

Improving Finite Element Optimization of InSAR-Derived Deformation Source Using Integrated Multiscale Approach

Remote Sensing
Parametric optimization/inversion of Interferometric Synthetic Aperture Radar (InSAR) measurements enables the modeling of the volcanic deformation source by considering the approximation of the analytic formulations or by defining refined scenarios ...
Andrea Barone, Pietro Tizzani, Antonio Pepe, Maurizio Fedi, Raffaele Castaldo   +4 more
doaj   +1 more source

Investigation of Resonance Modes in Iced Transmission Lines Using Two Discrete Methods

Mathematics
To investigate the oscillation modes of iced transmission lines, this study introduces a forcing term into the galloping equation and applies two discretization approaches: Discrete Method I (DMI), which directly transforms the partial differential ...
Rui Chen, Wanyu Bao, Mengqi Cai
doaj   +1 more source

Model Reduction for Multiscale Lithium-Ion Battery Simulation

, 2016
In this contribution we are concerned with efficient model reduction for multiscale problems arising in lithium-ion battery modeling with spatially resolved porous electrodes.
A. Latz, A. Wesche, B. Haasdonk, F. Ciucci, J.S. Hesthaven, M. Barrault, M. Drohmann, M. Ohlberger, O. Iliev, O. Lass, P. Bastian, P. Bastian, S. Golmon, S. Kaulmann, S. Kaulmann, S.C. Chen   +15 more
core   +1 more source

Multiscale Simulations for Coupled Flow and Transport Using the Generalized Multiscale Finite Element Method

Computation, 2015
In this paper, we develop a mass conservative multiscale method for coupled flow and transport in heterogeneous porous media. We consider a coupled system consisting of a convection-dominated transport equation and a flow equation.
Eric T. Chung, Yalchin Efendiev, Wing Tat Leung, Jun Ren   +3 more
doaj   +1 more source

A class of robust numerical methods for solving dynamical systems with multiple time scales [PDF]

, 2019
In this paper, we develop a class of robust numerical methods for solving dynamical systems with multiple time scales. We first represent the solution of a multiscale dynamical system as a transformation of a slowly varying solution.
Hou, Thomas Y., Wang, Zhongjian, Zhang, Zhiwen   +2 more
core   +1 more source