Patterns of air mixture movement in the operating area for the annular ejector of pneumatic transportation system
/ 1
- Details
- Category: Content №2 2023
- Last Updated on 28 April 2023
- Published on 30 November -0001
- Hits: 3637
Authors:
S.M.Ponomarenko, orcid.org/0000-0003-1346-7008, M.S.Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
I.Yu.Potapchuk*, orcid.org/0000-0002-5985-1040, M.S.Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
L.B.Kabakova, orcid.org/0000-0001-9356-2050, M.S.Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Yu.M.Radchenko, orcid.org/0000-0002-5055-6707, Institute of Industrial and Business Technologies Ukrainian State University of Science and Technologies, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
* Corresponding author e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2023, (2): 053 - 057
https://doi.org/10.33271/nvngu/2023-2/053
Abstract:
Purpose. To establish the regularities of two-phase flow of “gas-solid particles” in the operating area of an annular ejector where the following processes take place: air mixture ejecting, compressed air outflow from the ejector nozzle, air mixture flows mixing in the transport pipeline. In the work, the velocity distribution is also examined for dispersed phase and air phase of air mixture during its loading and accelerating in the transport pipeline of the pneumatic transport system.
Methodology. The research is based on the fundamental approaches of mass point dynamics, aerodynamics, the theory of jet flows and iteration methods of numerical solution of equations.
Findings. The mechanics of the air mixture flow under the ejection and aerodynamic force in the operating area of an annular ejector and at the beginning of transport pipeline is analyzed using the method of iterations. The impact of air mixture flow in the operating area of an annular ejector on energy performance of the pneumatic transport system is evaluated.
Originality. The originality is that, for the first time, the regularities describing two-phase “gas–solid particles” flow at the loading area of the pneumatic transport system with an annular ejector have been obtained. This made it possible to characterize the velocity distribution of the dispersed and air phases of the air mixture during their loading and aerodynamic acceleration in the transport pipeline. Also, an innovative approach to the effectiveness of the use of pipeline pneumatic transport is the assessment of the energy indicators of the use of ejector-type pneumatic transport equipment depending on the rate of compressed air outflow from the ejector.
Practical value. The implementation of the results in the modernization of existing and in the creation of new pneumatic transport systems with an annular ejector makes it possible to increase the efficiency of their use in the technological processes of moving dispersed materials at mining and metallurgical enterprises and in other areas of technology.
Keywords: pneumatic transportation system, air mixture, annular ejector, transport pipeline
References.
1. Liu, H. (2019). Pipeline Engineering: monograph. Boca Raton: CRC Press.
2. Klinzing, G. E., Rizk, F., Marcus, R., & Leung, L. S. (2013). Pneumatic Conveying of Solids: A theoretical and practical approach. Springer Science & Business Media. ISBN 940158981X.
3. Fendyo, O. M. (2014). Advantages and disadvantages of using pneumatic transport in agricultural production. Naukovyi Visnyk Natsionalnoho Universytetu Bioresursiv i Pryrodokorystuvannia Ukrainy. Seriia: Tekhnika ta enerhetyka APK, 194(1), 231-236.
4. Voloshin, A. I., & Ponomarenko, S. N. (2020). Mechanics of two-phase flows in pneumatic transport systems of the ejector type (Vol. 4). In Voloshyna, O. I. (Ed.). Mechanics of two-phase flows. Kyiv: Naukova dumka. ISBN 978-966-00-1752-8.
5. Somin, D. O., & Rohovyi, A. S. (2017). Vortex chamber superchargers: monograph. Kharkiv: FOP Mezina V. V. ISBN 978-617-7577-53-8.
6. Rathakrishnan, E. (2014). Gas dynamics. Delhi: PHI Learning Pvt. Ltd. ISBN 978-8120348394.
7. Voznyak, O. T. (2011). Mathematical models of jet streams. Visnyk Natsionalnoho Universytetu “Lvivska Politekhnyka”, 697, 54-59.
8. Gushchin, V. M., & Gushchin, O. V. (2010). Analysis of modes of movement of air mixtures in a pneumatic transport pipeline. Visnyk Donbaskoii Derzhavnoii Mashynobudivnoii Akademii, 1(18), 78-83.
9. Bulat, A. F., & Voloshin, A. I. (2019). Mechanics of two-phase “gas-solid particles” flows (Vol. 1). In Voloshyna, O. I. (Ed.). Mechanics of two-phase flows. Kyiv: Naukova dumka. ISSN 1993-8322.
10. Ponomarenko, S. (2021). Mathematical model of the airmixture motion within an operating area of annular ejector of the pneumatic network. Sciences of Europe, 1(65), 39-44. https://doi.org/10.24412/3162-2364-2021-65-1-39-44.
11. Bulat, A. F., & Voloshin, A. I. (2019). Methods for calculating two-phase flows in pipeline systems (Vol. 3). In Voloshyna, O. I. (Ed.). Mechanics of two-phase flows. Kyiv: Naukova dumka. ISBN 978-966-00-1712-2.
Newer news items:
- Theoretical and legal aspects of the regulation of environmental and land legal relations in the conditions of martial law in Ukraine - 28/04/2023 00:36
- Social responsibility for the safety and health of employees at work - 28/04/2023 00:36
- Improving the process of occupational risk management according to the Haddon matrix - 28/04/2023 00:36
- Improving the environmental efficiency of glass furnace chimneys using heat recovery technologies - 28/04/2023 00:36
- Investment management and financial development in infrastructure renovation of a sustainable-built environment - 28/04/2023 00:36
- Peculiarities of thermomodernization of the heating system of military infrastructure complexes - 28/04/2023 00:36
- Predicting of vertical displacements of structures of engineering buildings and facilities - 28/04/2023 00:36
- The influence of the impeller design features on the combined operating process of the torque-flow pump - 28/04/2023 00:36
- Inner shear resistance increasing effect of Concrete Canvas in ballasted railway tracks - 28/04/2023 00:36
- Contact tensions under the sole of rigid deep laying foundations and ground anchors - 28/04/2023 00:36
Older news items:
- Using nonlinear ultrasonic measurements to estimate parameters of the sedimentation of slurry solid phase in thickener - 28/04/2023 00:36
- Selection of the means of auxiliary transportation facilities and adaptation of their parameters to specific operation conditions - 28/04/2023 00:36
- Influence of underground mining activities on the topographic surface, case study of Nui Beo Coal Mine (Vietnam) - 28/04/2023 00:36
- Determining technological properties of drilling muds - 28/04/2023 00:36
- Geology, magmatism and specific features of mineralization of Bakyrchik ore field (Eastern Kazakhstan) - 28/04/2023 00:36
- An approach for ranking abandoned mines by the efficient use of their geothermal potential - 28/04/2023 00:36
- Connection of Kryvbas tectonics with natural and technogenic seismicity - 28/04/2023 00:36
Cooperation