In this study, turbulent flow around a tube bundle in non-orthogonal grid is simulated using the Large Eddy Simulation (LES) technique and parallelization of fully coupled Navier – Stokes (NS) equations. To model the small eddies, the Smagorinsky and a mixed model was used. This model represents the effect of dissipation and the grid-scale and subgrid-scale interactions. The fully coupled NS eq...

An interactive computer model of a short-term (with horizon 30–70 min) forecast aurora intensity has been developed in the form web-based geoinformation system. The OVATION-Prime empirical is used as basic software, which establishes statistical relationships between parameters solar wind, interplanetary magnetic field, and auroral particle fluxes. On basis this model, system built simulates sp...

We propose a mathematical model for investigating the efficacy of Countermeasure Competing (CMC) strategy which is method reducing effect computer virus attacks. Using Centre Manifold Theory, we determine conditions under subcritical (backward) bifurcation occurs at Basic Reproduction Number $R_{0}=1$. In order to illustrate theoretical findings, construct new Nonstandard Finite Difference Sche...

A Gaussian process has been one of the important approaches for emulating computer simulations. However, stationarity assumption a and intractability large-scale dataset limit its availability in practice. In this article, we propose clustered model which segments input data into multiple clusters, each is performed. The stochastic expectation-maximization employed to efficiently fit model. our...