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Lin, Yiqin; Bao, Liang; Wu, Qinghua - In: Mathematics and Computers in Simulation (MATCOM) 82 (2012) 11, pp. 2238-2252

In this paper we consider the simpler GMRES method augmented by approximate eigenvectors for solving nonsymmetric … linear systems. We modify the augmented restarted simpler GMRES proposed by Boojhawon and Bhuruth to obtain a simpler GMRES … with deflated restarting. Moreover, we also propose a residual-based simpler GMRES with deflated restarting, which is …

Persistent link: https://www.econbiz.de/10010751822

A high performance tool for the simulation of the dynamic pantograph–catenary interaction

Alberto, Angelines; Benet, Jesús; Arias, Enrique; … - In: Mathematics and Computers in Simulation (MATCOM) 79 (2008) 3, pp. 652-667

In this paper a computer tool for the simulation of the dynamic pantograph–catenary interaction is presented. We model this interaction and study its behavior in the energy transmission process. The calculation of the dynamic equation of the pantograph–catenary interaction is considered from...

Persistent link: https://www.econbiz.de/10011050242

Locating coalescing singular values of large two-parameter matrices

Dieci, Luca; Gasparo, M. Grazia; Papini, Alessandra; … - In: Mathematics and Computers in Simulation (MATCOM) 81 (2011) 5, pp. 996-1005

Consider a matrix valued function A(x)∈Rm×n, m≥n, smoothly depending on parameters x∈Ω⊂R2, where Ω is simply connected and bounded. We consider a technique to locate parameter values where some of the q dominant (q≤n) singular values of A coalesce, in the specific case when A is...

Persistent link: https://www.econbiz.de/10011050581

Novel 3D GPU based numerical parallel diffusion algorithms in cylindrical coordinates for health care simulation

Jiang, Beini; Dai, Weizhong; Khaliq, Abdul; Carey, Michelle - In: Mathematics and Computers in Simulation (MATCOM) 109 (2015) C, pp. 1-19

Modeling diffusion processes, such as drug deliver, bio-heat transfer, and the concentration change of cytokine for computational biology research, requires intensive computing resources as one must employ sequential numerical algorithms to obtain accurate numerical solutions, especially for...

Persistent link: https://www.econbiz.de/10011117187

Parallel computing forty years ago

Gustafson, K - In: Mathematics and Computers in Simulation (MATCOM) 51 (1999) 1, pp. 47-62

The author’s initiation into computing 40 years ago, and the early development of parallel computing paradigms within hardware and software systems which evolved at that time, are recounted in a personal trace. It was an optimal time to learn computing and the intuition gained has been of...

Persistent link: https://www.econbiz.de/10010869936

Parallel collision detection of ellipsoids with applications in large scale multibody dynamics

Pazouki, A.; Mazhar, H.; Negrut, D. - In: Mathematics and Computers in Simulation (MATCOM) 82 (2012) 5, pp. 879-894

This contribution describes a parallel approach for determining the collision state of a large collection of ellipsoids. Collision detection is required in granular dynamics simulation where it can combine with a differential variational inequality solver or discrete element method to...

Persistent link: https://www.econbiz.de/10010870634

Domain decomposition method for contact problems with small range contact

Daněk, Josef - In: Mathematics and Computers in Simulation (MATCOM) 61 (2003) 3, pp. 359-373

A non-overlapping domain decomposition algorithm of Neumann–Neumann type for solving variational inequalities arising from the elliptic boundary value problems in two dimensions with unilateral boundary condition is presented. We suppose that boundary with inequality condition is...

Persistent link: https://www.econbiz.de/10011050204

Efficient computer implementation of coupled hydro-thermo-mechanical analysis

Kruis, Jaroslav; Koudelka, Tomáš; Krejčí, Tomáš - In: Mathematics and Computers in Simulation (MATCOM) 80 (2010) 8, pp. 1578-1588

Hydro-thermo-mechanical analysis of reactor vessels based on the finite element method is a very demanding task due to its complexity as well as the large number of unknowns. This contribution deals with efficient computer implementation of the coupled analysis and attention is also devoted to...

Persistent link: https://www.econbiz.de/10011050333

Simultaneous mesh generation and partitioning for Delaunay meshes

Chrisochoides, Nikos; Nave, Démian - In: Mathematics and Computers in Simulation (MATCOM) 54 (2000) 4, pp. 321-339

In this paper, we present a new approach for the parallel generation and partitioning of unstructured 3D Delaunay meshes. The new approach couples the mesh generation and partitioning problems into a single optimization problem. Traditionally, these two problems are solved separately, first...

Persistent link: https://www.econbiz.de/10010749507