Computer simulation of flow reactors

The numerical 3D modeling of the gas-dynamic reactants flows of a flow reactor and their mixing that was made with the FLUENT software package is discussed. The presence of the modes where a reaction zone with a high content of C2 hydrocarbons is localized in the center of reactor presented....

chernykh1.pdf180.41 KB

Trust-Region solvers: performance and applications in geosciences

The Trust-Region (TR) algorithms are relatively new iterative algorithms for solving nonlinear optimization problems. High efficiency of the TR methods was demonstrated in a number of recent publications. They have the global convergence and local super-convergence, which differ them from the line search methods, commonly used for solving Inverse Problems....

gorbenko.pdf230.9 KB

Computer simulation of radiation acceleration mode in laser-plasma interaction

We present numerical studies on the ion acceleration from thin foils irradiated by ultra-high contrast laser pulses. Two-dimensional particle-in-cell (PIC) simulations reveal that ions are for a certain time accelerated in a phase-stable way by the laser radiation pressure. The development of the Rayleigh–Taylor instability leads to destroy foils and...

gorpinchenko.pdf287.04 KB

Application of schemes based on the differential approximation method to invariant solutions in the gas sphere expansion into vacuum

This paper considers the problem of obtaining invariant solutions under rotation transformation in the expansion of a gas sphere into vacuum in the Cartesian coordinates for the two-dimensional case. Numerical results are presented and a comparative analysis of conventional and invariant difference schemes is made. Various non-invariant difference schemes of...

lazareva.pdf342.84 KB