This paper investigates a modification of the fictitious domain method based on extension through lower-order coefficients, with a prescribed pressure boundary condition, for the nonlinear unsteady Navier–Stokes equations governing the motion of an incompressible homogeneous fluid in a bounded three-dimensional domain....
Zhanybek Baitulenov, A. Temirbekov, N. Temirbekov et al.· Mathematics· 0 citations
The object of this study is the propagation of hydroacoustic disturbances in a gas-lift well, where the main state variables are pressure and volumetric flow rate. The problem solved is the development of a numerical method for hydroacoustic problems, in which unknown initial distributions or harmonic input parameters...
N. Temirbekov, A. Turarov, S. Kasenov et al.· Eastern-European Journal of...· 0 citations
The Boussinesq equations are widely used to model incompressible thermally driven flows, but their numerical simulation becomes more challenging in domains containing fixed or moving rigid obstacles, particularly when the prescribed obstacle motion is uncertain. In this work, we develop a Brinkman-type fictitious-domai...
Zhadra Zhaxylykova, N. Alimbekova, F. Amenova et al.· Mathematics· 0 citations
This study evaluates the role of natural radioactivity as an exploration indicator for rare-metal, gold, and polymetallic mineralization in Eastern Kazakhstan, as well as its significance as a factor of radioecological hazard. The analysis is based on the results of regional radiohydrolithochemical surveys conducted at...
G. Berkinbayev, P. Kayukov, G. V. Fedorov et al.· Kompleksnoe Ispolzovanie Min...· 0 citations
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