Latvijas UniversitāteDoctor of Science in MathematicsLatvia · Riga
Moscow State UniversityPhD in MathematicsRussia · Moscow
Moscow State UniversityMathematicianRussia · Moscow
[show abstract] [hide abstract]
ABSTRACT: A new semi-implicit difference scheme based on our propagator method is elaborated for solution of initial-boundary value problem of electrochemical machining. The scheme is unconditionally monotonic and has truncation errors of the first order in time and of the second order in space. Analytical and numerical solutions for temperature distribution in 2D electrolytic cell are presented.07/2008: pages 179-186;
Article: NEW REGULARIZING APPROACH TO DETERMINING THE INFLUENCE COEFFICIENT MATRIX FOR GAS-TURBINE ENGINESSharif E Guseynov, Sergey M Yunusov[show abstract] [hide abstract]
ABSTRACT: This paper presents the new approach to the formation of the gas turbine engine diagnostic matrix employing Tikhonov regularization method and taking into account the compressor properties shift under the condition of engine air-gas channel alteration. This method allows eliminating the certain inadequacy of the diagnostic matrices in some cases and removes the restric-tions on their implementation for gas turbine engines diagnostics. The elabo-rated regularization algorithm of the calculation-identification matrix reversion permits to determine the diagnostic matrix persistently. The suggested method of registration of the compressor properties shift allows providing the adequacy of the engine mathematical model taking into consideration the depreciation of the engine and air-gas channel and consequently obtaining the adequate di-agnostic matrix. It is offered to employ the obtained diagnostic model in the on-board systems of the gas turbine engine control and diagnostics.
Article: On one approach for calculation of the thermal conductivity coefficients for heat transfer: part II[show abstract] [hide abstract]
ABSTRACT: In present work, we consider some class of homogeneous one-dimensional on spatial variable coefficient inverse problems of thermal conductivity in the bounded domain under some additional information. Authors offer one simple analytical method for determination of required coefficient of thermal conductivity under various type additional conditions. Offered method lets reduce the initial inverse problem to the problem for the solution of the first kind Volterra linear integral equation.