Ditemukan 3 dokumen yang sesuai dengan query
Sergey Leble
"
ABSTRACT
A problem of analytical-numerical modeling of the plane wave propagation from an
ocean surface to the atmosphere is considered. We are interested in the thermosphere impact
of tsunami waves. We suppose that the transport of energy and the momentum from lower
atmosphere to thermosphere heights is due to acoustic waves.
A set of expressions for the atmosphere variables (pressure, velocity, entropy) as a function
of the atmosphere parameters, time and height is derived and illustrated by plots. The
surface water wave ...
"
Gdansk : TASK , 2018
600 SBAG 22:3 (2018)
Artikel Jurnal Universitas Indonesia Library
Sergey Leble
"
ABSTRAK
We consider a generalization of the projection operator method for the case of the Cauchy problem in 1D space for systems of evolution differential equations of first order with variable coefficients. It is supposed that the dependence of coefficients on the only variable𝑥is weak, that is described by the introduction of a small parameter. Such problem corresponds, for example, to the case of wave propagation in a weakly inhomogeneous medium. As an example, we specify ...
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TASK, 2017
600 SBAG 21:2 (2017)
Artikel Jurnal Universitas Indonesia Library
Sergey Leble
"
ABSTRAK
A new algorithm is presented for evaluating the velocity field of the heat convection flow from a vertical solid flat plate using the temperature field. By using the coordinate transformation of Cartesian coordinates, to coordinates defined via streamlines, and visible in such coordinate approximations, it is possible to express the basic flow fields in terms of the temperature gradients only. After discretization, we formulate approximated sufficient finite difference formulas to evaluate the velocity field using ...
"
TASK, 2017
600 SBAG 21:3 (2017)
Artikel Jurnal Universitas Indonesia Library
