5,608 research outputs found
On Classical Dynamics of Affinely-Rigid Bodies Subject to the Kirchhoff-Love Constraints
In this article we consider the affinely-rigid body moving in the
three-dimensional physical space and subject to the Kirchhoff-Love constraints,
i.e., while it deforms homogeneously in the two-dimensional central plane of
the body it simultaneously performs one-dimensional oscillations orthogonal to
this central plane. For the polar decomposition we obtain the stationary
ellipsoids as special solutions of the general, strongly nonlinear equations of
motion. It is also shown that these solutions are conceptually different from
those obtained earlier for the two-polar (singular value) decomposition
Underground Coal Gasification Efficiency in Areas of High Faulting Frequency
The purpose of this paper is substantiating of efficiency during application of borehole
underground coal gasification technology based on target coal seam geology. Comprehensive
methodology that included analytical calculation is implemented in the work. To determine the
efficiency of coal seam gasification in faulting areas, an economic calculation method was
developed. The obtained conditions of coal seam allow to provide rational order of mine workings.
Conclusions regarding the implementation of the offered method are made on the basis of
undertaken investigations. The obtained results with sufficient accuracy in practical application will
allow consume coal reserves in the faulting zones using environmentally friendly conversion
technology to obtain power and chemical generator gas, chemicals and heat.This work was supported by the Ministry of Education and Science of Ukraine, grants
No. 0116U008041 and No.0115U002293
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