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Ministry of Higher and Secondary Specialized Education of the Republic of Uzbekistan

Pressure

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Full-Text Articles in Mathematics

Method Of Characteristics For Solving The Problem Of Gas Outflow From An Elementary Sec-Tion Of A Gas Pipeline, Madaminjon K. Mahkamov, S.S. Akhmadjonov, I.K. Khujaev Jun 2021

Method Of Characteristics For Solving The Problem Of Gas Outflow From An Elementary Sec-Tion Of A Gas Pipeline, Madaminjon K. Mahkamov, S.S. Akhmadjonov, I.K. Khujaev

Scientific Bulletin. Physical and Mathematical Research

Numerous problems based on equations of hyperbolic type are solved by the method of characteristics when boundary conditions of the first, second and third kinds are set on the boundary. These include, in particular, the problems of pipeline transportation of various media. The quasi-one-dimensional equations of conservation of mass and momentum are linearized and separate equations are drawn up for a specific indicator (flow rate, gas pressure) of the process. This approach is associated with the tradition of forming boundary conditions and solving problems only with respect to a specific indicator, in particu-lar, with respect to pressure, velocity, and flow …


Method For Determining Hydraulic Resistance During, K. Navruzov, Z. K. Shukurov, A. Sh. Begjanov Jul 2019

Method For Determining Hydraulic Resistance During, K. Navruzov, Z. K. Shukurov, A. Sh. Begjanov

Central Asian Problems of Modern Science and Education

In the article, pulsating fluid flows in tubes with changing walls, which are of great importance in biological mechanics, in particular, in the flow of blood in the arterial vessel, are investigated. The solution of the problem obtained formulas for the distribution of pressure gradient, velocity and flow rate. Impedance method analyzed the increase in hydraulic resistance depending on the frequency of oscillation. It was found that with large values 2  of hydraulic resistance grow with growth 2  . For crowding out the same flow rates, for small and with large values of the vibrational number or frequency, …


Method For Determining Hydraulic Resistance During, K. Navruzov, Z. K. Shukurov, A. Sh. Begjanov Jul 2019

Method For Determining Hydraulic Resistance During, K. Navruzov, Z. K. Shukurov, A. Sh. Begjanov

Central Asian Problems of Modern Science and Education

In the article, pulsating fluid flows in tubes with changing walls, which are of great importance in biological mechanics, in particular, in the flow of blood in the arterial vessel, are investigated. The solution of the problem obtained formulas for the distribution of pressure gradient, velocity and flow rate. Impedance method analyzed the increase in hydraulic resistance depending on the frequency of oscillation. It was found that with large values 2  of hydraulic resistance grow with growth 2  . For crowding out the same flow rates, for small and with large values of the vibrational number or frequency, …