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On pressure and corner boundary conditions with two lattice Boltzmann construction approaches

Machado, Raúl - In: Mathematics and Computers in Simulation (MATCOM) 84 (2012) C, pp. 26-41

A pressure (density) and a corner no-slip boundary condition formulation are introduced for the two-dimensional lattice Boltzmann method and numerically tested for the Hagen–Poiseuille flow case in this work. Both formulations are derived independently of the equilibrium distribution function...

Persistent link: https://www.econbiz.de/10011050156

Machine tool simulation based on reduced order FE models

Faßbender, Heike; Soppa, Andreas - In: Mathematics and Computers in Simulation (MATCOM) 82 (2011) 3, pp. 404-413

of real time simulation and control. In commercial FE simulation software often modal reduction is used to obtain a model … of lower order which allows for faster simulation. In recent years new methods to reduce large and sparse dynamical … systems emerged. This work concentrates on the reduction of certain FE systems arising in machine tool simulation with Krylov …

Persistent link: https://www.econbiz.de/10011050174

A closed-form expression for the quantile function of the Gompertz–Makeham distribution

Jodrá, P. - In: Mathematics and Computers in Simulation (MATCOM) 79 (2009) 10, pp. 3069-3075

In this note, we give a closed-form expression in terms of the Lambert W function for the quantile function of the Gompertz–Makeham distribution. This probability distribution has frequently been used to describe human mortality and to establish actuarial tables. The analytical expression...

Persistent link: https://www.econbiz.de/10011050235

An integrated approach for simulation of mechatronic systems applied to a hexapod robot

Akdağ, M.; Karagülle, H.; Malgaca, L. - In: Mathematics and Computers in Simulation (MATCOM) 82 (2012) 5, pp. 818-835

models, solve them and give simulation outputs. In this study, SolidWorks is used for solid modeling and assembly …

Persistent link: https://www.econbiz.de/10011050313

Simulation of Brownian motion at first-passage times

Burq, Zaeem A.; Jones, Owen D. - In: Mathematics and Computers in Simulation (MATCOM) 77 (2008) 1, pp. 64-71

first hits points in δZ for some δ>0. Central to our method is an algorithm for the exact simulation of τ, the first time …

Persistent link: https://www.econbiz.de/10011050323

DBD lamp converter design using an electrical model of the load

Piquet, Hubert; Díez, Rafael; Blaquière, Jean-Marc; … - In: Mathematics and Computers in Simulation (MATCOM) 81 (2010) 2, pp. 420-432

simplified and improved, thanks to the simulation of the entire system: the converter along with the lamp. This model also helps …

Persistent link: https://www.econbiz.de/10011050378

Strong discrete time approximation of stochastic differential equations with time delay

Küchler, Uwe; Platen, Eckhard - In: Mathematics and Computers in Simulation (MATCOM) 54 (2000) 1, pp. 189-205

The paper introduces an approach for the derivation of discrete time approximations for solutions of stochastic differential equations (SDEs) with time delay. The suggested approximations converge in a strong sense. Furthermore, explicit solutions for linear stochastic delay equations are given.

Persistent link: https://www.econbiz.de/10011050382

Diagnostics for conditional heteroscedasticity models: some simulation results

Tsui, Albert K - In: Mathematics and Computers in Simulation (MATCOM) 64 (2004) 1, pp. 113-119

In this paper, we study the size and power of various diagnostic statistics for univariate conditional heteroscedasticity models. These test statistics include the residual-based tests recently derived by Tse, Li and Mak, and Wooldridge, respectively. Monte-Carlo experiments with 1000...

Persistent link: https://www.econbiz.de/10010748462

Simulation of two-plane automatic balancing of a rigid rotor

Sperling, L.; Ryzhik, B.; Linz, Ch.; Duckstein, H. - In: Mathematics and Computers in Simulation (MATCOM) 58 (2002) 4, pp. 351-365

demonstrated. The paper contains examples of simulation results and considerations about the optimal values of the regarded …

Persistent link: https://www.econbiz.de/10010748504

Proof of a simple time-step propagation scheme for Monte Carlo simulation

Bufler, F.M.; Schenk, A.; Fichtner, W. - In: Mathematics and Computers in Simulation (MATCOM) 62 (2003) 3, pp. 323-326

An explicit proof of a simple time-step propagation scheme is given in the framework of basic probability theory. It can be used in Monte Carlo simulations solving the Boltzmann transport equation. If the stochastically selected first scattering event occurs before a given time t1, the particle...

Persistent link: https://www.econbiz.de/10010748664