647 research outputs found
Cooperation of Uzbekistan With the USA and Pakistan in Solving Problems in Afghanistan
In this article, Uzbekistan's cooperation with the United States and Pakistan in solving the problems of the neighboring state of Afghanistan will be analyzed on the basis of the latest materials. Previously unannounced data will be provided. The main attention will be paid to the role of cooperation of these three states for Afghanistan
Theory of weakly nonlinear self sustained detonations
We propose a theory of weakly nonlinear multi-dimensional self sustained
detonations based on asymptotic analysis of the reactive compressible
Navier-Stokes equations. We show that these equations can be reduced to a model
consisting of a forced, unsteady, small disturbance, transonic equation and a
rate equation for the heat release. In one spatial dimension, the model
simplifies to a forced Burgers equation. Through analysis, numerical
calculations and comparison with the reactive Euler equations, the model is
demonstrated to capture such essential dynamical characteristics of detonations
as the steady-state structure, the linear stability spectrum, the
period-doubling sequence of bifurcations and chaos in one-dimensional
detonations and cellular structures in multi- dimensional detonations
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