Determination of Natural Gas Loss Values Based on Physical Simulation of Leakages From the Pipeline to the Media With Superatmospheric Pressure Using a Volumetric-Type Expander

Bakesheva, Aigul Temerbekovna; Irgibaev, Tuleukhan Irgibaevich; Belousov, A.E.

doi:10.32014/2019.2518-170x.76

Cited by 6 publications

(5 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, the problem of determining the parameters of the quasistatic motion of a shallow concrete shell is come down to solving the Cauchy problem - (19)(20)(21), which can be implemented by the Runge -Kutta numerical method [30]. The initial conditions of the problem (at t = 0) are determined by solving the system (14,15) by the above method. At each step of integration over time -t k , we will obtain new values of W (t) and F (t) at each grid point.…”

Section: Resultsmentioning

confidence: 99%

“…Here, the coefficients c, e contains the stiffness and geometrical parameters of the shell. Equations similar to system (14,15) are written for all 49 grid points (Figure 2). Thus, a system of 98 algebraic equations for the functions F and W is obtained.…”

Section: Methodsmentioning

confidence: 99%

“…Such a solution has yielded nonlinear dependences of the load distribution of the four radii of curvature of curved shells, which are compared and verified using numerical solutions of finite elements. The use of nonlinear analysis in solving nonlinear equations is shown in [11][12][13][14][15][16] for various types of shells and loads.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Finite-difference equations of quasistatic motion of the shallow concrete shells in nonlinear setting

Duissenbekov

Tokmuratov

Zhangabay

et al. 2020

Curved and Layered Structures

View full text Add to dashboard Cite

AbstractThe study solves a system of finite difference equations for flexible shallow concrete shells while taking into account the nonlinear deformations. All stiffness properties of the shell are taken as variables, i.e., stiffness surface and through-thickness stiffness. Differential equations under consideration were evaluated in the form of algebraic equations with the finite element method. For a reinforced shell, a system of 98 equations on a 8×8 grid was established, which was next solved with the approximation method from the nonlinear plasticity theory. A test case involved computing a 1×1 shallow shell taking into account the nonlinear properties of concrete. With nonlinear equations for the concrete creep taken as constitutive, equations for the quasi-static shell motion under constant load were derived. The resultant equations were written in a differential form and the problem of solving these differential equations was then reduced to the solving of the Cauchy problem. The numerical solution to this problem allows describing the stress-strain state of the shell at each point of the shell grid within a specified time interval.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Finite-difference equations of quasistatic motion of the shallow concrete shells in nonlinear setting

Duissenbekov

Tokmuratov

Zhangabay

et al. 2020

Curved and Layered Structures

View full text Add to dashboard Cite

show abstract

“…In scientific sources, in particular, it is noted that privatisation as a form of divestiture reflects the process of radical transformation of property relations in order to form the private sector as a prerequisite for improving socio-economic efficiency and growth of social welfare through market and business relations, business environment, competition (Bazilevich, 2014). However, in the distribution of state property it is very important to ensure compliance with the fundamental principle of law, equal rights of every citizen to the appropriate share of state property (Malyi and Zahrebelnyi, 2016;Bakesheva et al, 2019;Belousov et al, 2018). It is clear that this philosophy serves as the basis of social stability in society, because the reform of state property that is not based on the principles of social justice undermines the socioeconomic stability of the country and inhibits its socio-economic growth, as it happened in Ukraine.…”

Section: The Concept Of Privatisation In Ukraine: Characterictics and Stages Of Developmentmentioning

confidence: 99%

Privatisation in Ukraine as a Deterrent to the Innovative Development of the National Economy

Paryzkyi

Ivanchov

Antonova

2021

EEA

View full text Add to dashboard Cite

The study investigates the stages and features of privatisation in Ukraine. it describes the impact and consequences of privatisation on the economic potential of the country. The main features and problems of the privatisation process in Ukraine are identified. Theoretical and practical analysis of the consequences of privatisation of state property on the innovative development of Ukraine's economy has been carried out. It was established that the withdrawal from state ownership by means of privatising enterprises is a challenge that negatively affects innovation activity, because it is mainly associated not with the creation of "know-how" to ensure economic development, but with encroachment on material resources states with the motive of enrichment, which leads to the cessation of development and introduction of existing (often imported) technologies and, as a consequence, threatens the internal innovation potential and national security of the country. The proposed ways to reform the privatisation process are aimed at mitigating the consequences of unfair privatisation to strengthen the competitiveness of the national economy, its innovative development and improve the social situation of citizens of Ukraine.

show abstract

“…In connection therewith, it is required to improve electric power quality, especially at enterprises with a high share of electric power costs in the prime cost of production. If the quality parameters of electric power fail to comply with normal values, additional active power losses occur [12][13][14][15][16]. Requirements for the quality parameters of electric power vary depending on the country.…”

Section: Introductionmentioning

confidence: 99%

Increasing the energy efficiency of an enterprise by point compensating of power quality distortions

2019

View full text Add to dashboard Cite

The cost of any product includes the cost of electrical energy in its production. Enterprises use various methods to reduce the cost of electric energy. One of the most common methods is to reduce the loss of active power in the distribution network of an enterprise. This is achieved by compensating for distortions in the power quality of electrical energy using compensating devices. The method presented in the article offers point compensation of distortions in the power quality indicators of electric energy. Point connection of compensating devices allows their small number to be used. But, at the same time, a greater effect is achieved. The connection points of compensating devices are determined by the developed method. The method includes three stages: collecting data on consumers of electric energy at an enterprise and on the topology of the distribution electric network, analyzing the results obtained using the developed algorithm, and determining connection points using the Pareto method. Also, the developed method was compared with the classical ones according to the criterion of the ratio of implementation costs to the effect of its application.

show abstract

Determination of Natural Gas Loss Values Based on Physical Simulation of Leakages From the Pipeline to the Media With Superatmospheric Pressure Using a Volumetric-Type Expander

Cited by 6 publications

References 4 publications

Finite-difference equations of quasistatic motion of the shallow concrete shells in nonlinear setting

Finite-difference equations of quasistatic motion of the shallow concrete shells in nonlinear setting

Privatisation in Ukraine as a Deterrent to the Innovative Development of the National Economy

Increasing the energy efficiency of an enterprise by point compensating of power quality distortions

Contact Info

Product

Resources

About