The lattice Boltzmann method offers an alternative framework compared to the NavierStokes simulations. However, the applicability of this method to simulate moving boundary problems has not received sufficient attention. In this work, different treatments of the noslip condition of lattice Boltzmann method for the moving boundary problem of rigid and flexible wings flapping in a fluid have been...

The paper is mainly concerned with an approximate three-ball inequality for solutions in elliptic periodic homogenization. We consider a family of second order operators $\mathcal{L}_\epsilon$ divergence form rapidly oscillating and coefficients. It the first time such homogenization theory obtained. implies quantitative propagation smallness. proof relies on representation solution by Poisson ...

The objective of this paper is to study unsteady magneto hydrodynamic (MHD) free flow viscoelastic fluid (Walter’s B) past an infinite vertical plate through porous medium. temperature assumed be oscillating with time. solution obtained shows different profiles effects slip conditions on primary and secondary velocity. Also, the various parameters temperature, concentration, velocity were prese...

For the spatially-distributed Fermi–Pasta–Ulam (FPU) equation, irregular solutions are studied that contain components rapidly oscillating in spatial variable, with different asymptotically large modes. The main result of this paper is construction families special nonlinear systems Schrödinger type—quasinormal forms—whose nonlocal dynamics determines local behavior to original problem, as t→∞....

Random networks of symmetrically coupled, excitable elements can self-organize into coherently oscillating states if the networks contain loops (indeed loops are abundant in random networks) and if the initial conditions are sufficiently random. In the oscillating state, signals propagate in a single direction and one or a few network loops are selected as driving loops in which the excitation ...

Classical and quantum decay of one dimensional finite wells with oscillating walls. Abstract To study the time decay laws (tdl) of quasibounded hamiltonian systems we have considered two finite potential wells with oscillating walls filled by non interacting particles. We show that the tdl can be qualitatively different for different movement of the oscillating wall at classical level according...

In this paper, we are interested in color image processing, and in particular color image decomposition. The problem of image decomposition consists in splitting an original image f into two components u and v. u should contain the geometric information of the original image, while v should be made of the oscillating patterns of f , such as textures. We propose here a scheme based on a projecte...

Commencing from a global-error formula, originally due to Henrici, we investigate the accumulation of global error in the numerical solution of linear highly-oscillating systems of the form y 00 + g(t)y = 0, where g(t) t!1 ?! 1. Using WKB analysis we derive an explicit form of the global-error envelope for Runge{Kutta and Magnus methods. Our results are closely matched by numerical experiments....