Results 81 to 90 of about 12,383 (219)

Variational calculations for resonance oscillations of inhomogeneous plasmas [PDF]

The electrostatic resonance properties of an inhomogeneous plasma column are reported by application of the Rayleigh-Ritz method. A description of the rf equation of motion and pressure term that expresses the system of equations in Euler-Lagrange form ...
Crawford, F. W., Peng, Y. K. M.
core   +1 more source

Fluctuations in the Irreversible Decay of Turbulent Energy

, 1998
A fluctuation law of the energy in freely-decaying, homogeneous and isotropic turbulence is derived within standard closure hypotheses for 3D incompressible flow.
A. Juneja, A. N. Kolmogorov, A. S. Monin, D. C. Haworth, G. Comte-Bellot, G. Comte-Bellot, G. K. Batchelor, G. L. Eyink, G. L. Eyink, G. L. Eyink, G. L. Eyink, Gregory L. Eyink, H. Chen, I. Proudman, J. M. Burgers, K. Huang, L. Onsager, L. Onsager, S. A. Orszag, S. B. Pope, T. Gotoh, T. von Kármán, U. Frisch, W. C. Reynolds   +23 more
core   +1 more source

A rational‐Chebyshev projection method for nonlinear eigenvalue problems

Numerical Linear Algebra with Applications, Volume 31, Issue 6, December 2024.
Abstract This article describes a projection method based on a combination of rational and polynomial approximations for efficiently solving large nonlinear eigenvalue problems. In a first stage the nonlinear matrix function T(λ)$$ T\left(\lambda \right) $$ under consideration is approximated by a matrix polynomial in λ$$ \lambda $$.
Ziyuan Tang, Yousef Saad
wiley   +1 more source

Self-consistently Improved Finite Temperature Effective Potential for Gauge Theories

, 1993
The finite temperature effective potential of the Abelian Higgs Model is studied using the self-consistent composite operator method, which sums up the contributions of daisy and superdaisy diagrams. The effect of the momentum dependence of the effective
C. Athorne, C. G. Boyd, D. J. Gross, D. Kirzhnits, D. Kirzhnits, D. Kirzhnits, F. Freire, G. Amelino-Camelia, G. Amelino-Camelia, G. Amelino-Camelia, H.A. Bethe, J. Kapusta, J. Kapusta, J. M. Cornwall, J. March-Russell, J. R. Espinosa, J. R. Espinosa, L. Dolan, M. Dine, M. Dine, M. Dine, M. E. Carrington, M. E. Shaposhnikov, M. E. Shaposhnikov, P. Arnold, P. Arnold, P. Elmfors, R. R. Parwani, R. Takahashi, S. Weinberg, V. Jain, W. Buchmueller   +31 more
core   +1 more source

Study of the Effect of Initial Plate Temperature in Jet Impingement Cooling Process

steel research international, Volume 95, Issue 12, December 2024.
This work investigates jet impingement of heated steel plate using an industrial scale run‐out tables (ROT) facility with thermal camera. A mixture Eulerian fluid dynamics (CFD), and heat transfer model is developed to obtain the boiling curves numerically.
Mohamed S. Gadala, Abdulrahman Gomaa, Fahad Aslam   +2 more
wiley   +1 more source

A Unified Spectro-Geometric-Ritz Method for Vibration Analysis of Open and Closed Shells with Arbitrary Boundary Conditions

Shock and Vibration, 2016
This paper presents free vibration analysis of open and closed shells with arbitrary boundary conditions using a spectro-geometric-Ritz method. In this method, regardless of the boundary conditions, each of the displacement components of open and closed ...
Dongyan Shi, Yunke Zhao, Qingshan Wang, Xiaoyan Teng, Fuzhen Pang   +4 more
doaj   +1 more source

Dissecting the FEAST algorithm for generalized eigenproblems

, 2012
We analyze the FEAST method for computing selected eigenvalues and eigenvectors of large sparse matrix pencils. After establishing the close connection between FEAST and the well-known Rayleigh-Ritz method, we identify several critical issues that ...
Bientinesi, Paolo, Di Napoli, Edoardo, Galgon, Martin, Krämer, Lukas, Lang, Bruno   +4 more
core   +1 more source

Localization transition of random copolymers at interfaces

, 1999
We consider adsorption of random copolymer chains onto an interface within the model of Garel et al. Europhysics Letters 8, 9 (1989). By using the replica method the adsorption of the copolymer at the interface is mapped onto the problem of finding the ...
A. Sali, A. V. Dobrynin, C. de Dominicis, C. de Dominicis, C. Yeung, C.-A. Dai, C.-A. Dai, H. R. Brown, H. R. Brown, Igor Ya. Erukhimovich, J. Bryngelson, J. M. Cornwall, J. Noolandi, J.-U. Sommer, J.-U. Sommer, Jens-Uwe Sommer, K. Char, L. D. Landau, M. Karplus, P. G. de Gennes, R. I. Hancock, S. F. Edwards, S. Milner, Semjon Stepanow, T. Garel   +24 more
core   +1 more source

Quasicomparison Functions and Substructure Synthesis for Framed Structures Stability Analysis

Latin American Journal of Solids and Structures
The Rayleigh-Ritz-Meirovitch substructure synthesis method (RRMSSM) is extended to buckling analysis in framed structures. The objective is a computational procedure capable of yielding very accurate critical loads through solution of very-low-order ...
J. I. Colombo, C. A. Morales
doaj   +1 more source

Exploiting symmetries in the modeling and analysis of tires [PDF]

A computational procedure is presented for reducing the size of the analysis models of tires having unsymmetric material, geometry and/or loading. The two key elements of the procedure when applied to anisotropic tires are: (1) decomposition of the ...
Andersen, C. M., Noor, Ahmed K., Tanner, John A.   +2 more
core   +1 more source