Results 81 to 90 of about 2,258,481 (223)
Analysis of Artificial Dissipation of Explicit and Implicit Time-Integration Methods
, 2016 Stability is an important aspect of numerical methods for hyperbolic conservation laws and has received much interest. However, continuity in time is often assumed and only semidiscrete stability is studied. Thus, it is interesting to investigate the influence of explicit and implicit time integration methods on the stability of numerical schemes.
Öffner, Philipp +2 more
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An iterative dynamic chemical stiffness removal method for reacting flow simulations
Propulsion and EnergyAn iterative dynamic chemical stiffness removal method (IDCSR) based on quasi-steady-state approximation (QSSA) is proposed. The IDCSR method is built on a previously developed non-iterative method which has proved to work well for small timestep sizes ...
Chao Xu, Tianfeng Lu
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Mixed time integration methods for transient thermal analysis of structures [PDF]
The computational methods used to predict and optimize the thermal structural behavior of aerospace vehicle structures are reviewed. In general, two classes of algorithms, implicit and explicit, are used in transient thermal analysis of structures.
Liu, W. K.
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International Journal for Numerical Methods in Engineering, 2019 A multistep explicit time integration algorithm is presented for tracking the propagation of discontinuous stress waves in heterogeneous solids whose subdomain‐to‐subdomain critical time step ratios range from tens to thousands.
S. S. Cho +3 more
semanticscholar +1 more source
Explicit complex time integrators for stiff problems
Most numerical methods for time integration use real-valued time steps. Complex time steps, however, can provide an additional degree of freedom, as we can select the magnitude of the time step in both the real and imaginary directions. We show that specific paths in the complex time plane lead to expanded stability regions, providing clear ...
George, Jithin D. +3 more
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Development of a continuum plasticity model for the commercial finite element code ABAQUS [PDF]
, 2011 The present work relates to the development of computational material models for sheet metal forming simulations. In this specific study, an implicit scheme with consistent Jacobian is used for integration of large deformation formulation and plane ...
De Waele, Wim, Safaei, Mohsen
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Advances in Difference Equations, 2019 In this paper, we investigate some new nonlinear dynamic integral inequalities containing integration on infinite interval on time scales, which provide explicit bounds on unknown functions.
Haidong Liu, Cuiyuan Li, Feichao Shen
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Computational Mathematics and Mathematical PhysicsThe article proposes a new algorithm for numerical integration over time of the Cahn-Hilliard equation, based on the combined application of the Eyre splitting method and the local iteration modified (LIM) scheme for solving a finite-dimensional problem at each time step.
M. A. Botchev +2 more
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Frontiers in Physics, 2018 We study three different time integration methods for a dynamic pore network model for immiscible two-phase flow in porous media. Considered are two explicit methods, the forward Euler and midpoint methods, and a new semi-implicit method developed herein.
Magnus Aa. Gjennestad +3 more
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Large‐step explicit time integration via mass matrix tailoring
International Journal for Numerical Methods in Engineering, 2019 SummaryA method for tailoring mass matrices that allows large time‐step explicit transient analysis is presented. It is shown that the accuracy of the present tailored mass matrix preserves the low‐frequency contents while effectively replacing the unwanted higher mesh frequencies by a user‐desired cutoff frequency.
José A. González, K. C. Park
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