NUMERICAL MODELING OF GAS-LIKE MEDIUMS IN THE FLOW PART OF A FAN

Keywords: centrifugal fan, aerodynamic fan, air flow, working wheel, external attachment, aerodynamic characteristics

Abstract

The exact view of agricultural crops is an important crop for achieving an increase in productivity in the growing crops. One of the main reasons for ensuring the efficiency of the robotic planter of a precise suspension is the stable operation of the entire pneumatic system. One of the main elements of such a system is a fan. An important factor in the design of the fan is the harmonization of the parameters with the parameters of the exact winder. It is possible to reach for the help of field experiments, which will require a large number of trials and revisions, as well as a large resource and hours spent. With the development of numerical technology and variation in the design of modern methods, it is possible to better know the optimal design of the fan. This article is devoted to the numerical simulation of the working process of gas-like media, which flows in the flow part of a central radial fan. The analysis of enumeration technologies is based on the use of Computational fluid dynamics (CFD) packages, as it gives the opportunity to transfer the main regularities of the flow, confirm and expand the results of natural chi laboratory experiment. Behind the results, one can blame the possibility of inducing virtual models of processes and phenomena that are seen in the follow-up gallery. Perspective methods of numerical modeling and the creation of a mathematical model will speed up the achievement of a given level of parameters in the design of the elements of a central radial fan, which is close to the speed of wind speed for traditional experimental and theoretical design methods. The main attention is given to the calculation of the calculation methods of gas dynamics in the areas of the gas generator, which are being studied. To our advantage, give us the opportunity to create a new design of a central radial fan and to reach an increase in speed and density, which will give us the opportunity to carry out floor robots on a new level. Therefore, it is important to develop new technologies for numerical simulation of and alternative modern CFD packages in the design of new designs.

References

1. Anderson D., Tannehill Dzh., Pletcher R., Vychislitel'naja gidromehanika i teploobmen. [Computational fluid mechanics and heat transfer. ]// M.: Mir, 1990, t.1,2.
2. Anderson, J. D. Jr. (1995). Computational Fluid Dynamics: The Basics with Applications. New York : McGraw-Hill.
3. Babu, V. (2021). Fundamentals of gas dynamics (2nd ed.). Berlin: Springer.
4. Ing. Dr. techn. Back O. Ventilatoren entwurf und berechnung. Halle (Saale) 1955–362 p.
5. Borisenko A. I. Gazovaja dinamika dvigatelej. [Gas dynamics of engines.] M. : Gosudarstvennoe nauchno-tehnicheskoe izdatel'stvo, 1962. – 794 s.
6. Bruk A. D. Solomahova T. S. I dr. Centrobezhnye ventiljatory. [Centrifugal fans.] M. : Mashinostroenie, 1975. – 416 s.
7. Chichkin V. P. Ovoshhnye sejalki i kombinirovannye agregaty: Teorija, konstrukcija, raschet. – Kishenev : Shtiinca, 1984. – 392 s.
8. ChichkinV.P. Ovoshhnye sejalki i kombinirovannye agregaty: teorija, konstrukcija i raschjot. [Vegetable seeders and combined units: theory, design and calculation.] / V.P. Chichkin. – Kishinev : Shtinica, 1984. 392 s.
9. Chung, T. J. (2002). Computational fluid dynamics. Cambridge : Cambridge University Press.
10. Djachek P. I. Nasosy, Ventiljatory, Kompressory. [Pumps, Fans, Compressors.] Uchebn. posobie. Izdatel'stvo ASV M. 2013–432 s.
11. Dzhefris G., Svirls B., Metody matematicheskoj fiziki. [Methods of mathematical physics.] M. : Mir, 1969.
12. Fletcher, A. J. (1988). Computational techniques for Fluid Dynamics. New York: Springer-Verlag: Berlin.
13. Frank, M. (2016). White fluid mechanics (8th ed.). New York : McGraw-Hill Education.
14. Hirsch, C. (2007). Numerical computation of internal and external flows (2nd ed.). Oxford : Published by John Wiley & Sons, Ltd.
15. Holshhevnikov K. V., Teorija i raschet aviacionnyh lopatochnyh mashin: Uchebn.dlja aviac. vuzov i fakul'tetov. [Theory and calculation of aircraft blade machines: Textbook for aviation. universities and faculties.] M. : Mashinostroenie,1970–610 s.
16. Ivanov O. P., Mamchenko V. O. Ajerodinamika i ventiljatory. [Aerodynamics and fans.] Uchebn.dlja stud.vuzov, Leningrad «Mashinostroenie» Leningradskoe otdelenie 1986–280 s.
17. John J. E. Introduction to fluid machanics. N.Y., 1980. p. 587.
18. Kalinkevich, N. V., & Gusak, A.G. (2011). Theory of turbochargers. Sumy : SSU.
19. Kalinushkin, M.P. Ventiljatornye ustanovki. [Fan installations.] / M.P. Kalinushkin. – M. : Vysshaja shkola, 1979. – 223 s.
20. Lokshin, I. L. (1959). Investigation of the flow behind the wheels of centrifugal fans in relative motion. Industrial Aerodynamics, 12, 2–153.
21. Martynenko S. A., Meshchyshena L. V., Pohorilyi L. V. ta in. Pnevmatychni siialky: konstruiuvannia i rozrakhunok. [Pneumatic seeders: design and development.] K. : Tekhnika, 1992. – 224 s.
22. Pak V. S. Vysokojekonomichnye centrobezhnye ventiljatory s profilirovannymi lopatkami. [Highly economical centrifugal fans with profiled blades.] Ugol' Ukrainy. – 1960. – №3.
23. Rathakrishnan, E. (2010). Applied gas dynamics. Hoboken : Wiley.
24. Reddy, J. N. (2006). An introduction to the finite element method. New York : McGraw-Hill.
25. Ronald, H. (2000). Aungier Centrifugal compressors a strategy for aerodynamic design and analysis. New York : Asme press, 311 p.
26. Schlichting, H., & Gersten, K. (2017). Boundary-Layer theory (9th ed.). Berlin : Springer-Verlag, 805 p.
27. Solomahova T. S., Chebysheva K. V. Centrobezhnye ventiljatory. Ajerodinamicheskie shemy i harakteristiki. [Centrifugal fans. Aerodynamic schemes and characteristics.] Spravochnik-M. : Mashinostroenie, 1980–176 s.
28. Sysolin P.V. Teoriia, proektuvannia ta rozrakhunky posivnykh mashyn: navch. Posibnyk. [Theory, design and development of agricultural machines: Navch. helper.] / P.V. Sysolin. – K.:ISDO, 1994. – 148 s.
29. Turbin, B.G. Ventiljatory sel'skohozjajstvennyh mashin. [Agricultural machinery fans.] / B.G. Turbin. – Leningrad: Mashinostroenie, 1968. – 159 s.
30. Zaika P. M. Teoriia silskohospodarskykh mashyn. T.1, Ch.2. Mashyny dlia sivby ta sadinnia. [Theory of agricultural machines. T.1, Part 2. Cars for sivbi ta sadinnya.]/Zaika P. M. – Kharkiv: Oko, 2002.-452 s.
Published
2022-12-10
How to Cite
Melnik, V. I., Zelensky, A. P., & Zelensky, A. P. (2022). NUMERICAL MODELING OF GAS-LIKE MEDIUMS IN THE FLOW PART OF A FAN. Bulletin of Sumy National Agrarian University. The Series: Mechanization and Automation of Production Processes, (2(48), 28-34. https://doi.org/10.32845/msnau.2022.2.5