Specifying Two-Phase Flow in Modeling Pneumatic Systems Performance of Farm Machines
Author(s):
S. Mudarisov, E. Khasanov, Z. Rakhimov, I. Gabitov, I. Badretdinov, I. Farchutdinov, F. Gallyamov, M. Davletshin, R. Aipov, R. Jarullin
Affiliation(s):
ABSTRACT: The aim of the given investigation is to specify variables of two-phase heterogeneous “gas and particles” flows (namely “air and seeds” and “air and fluid drops”) to implement mathematic models of a pneumatic system performance technological process in grain seeders and seed treaters. To give a theoretical description of particle formation, movement and distribution technological processes we recommend “gas and particles” two-phase flow mechanics methods and Navier-Stokes equations added with equations of continuity, mass conservation for mixing and momentum conservation. Two-phase flow methods can be applied to definite technological processes. We found out “air and seeds” and “air and drops” mixture flow patterns measured by Reynold’s number and particle bulk concentration. To calculate the given variables there is an air stream velocity measurement method to provide particle movement.
Keywords : Seeding machine; Pneumatic distribution system; Formation of aerosol droplets; Technological process simulation; Two phase flow.
[2] S. G. Mudarisov, Z. S. Rakhimov, “Argumentation of the “air-seeds” two-phase flow under mathematical description of the operation of the grain seeder pneumatic system”, Bulletin of the Bashkir State Agrarian University, vol. 4, no. 32, pp. 85-91, 2014.
[3] E. R. Khasanov, S. G. Mudarisov, “Modeling of the process of the monodispersed aerosol formation during pre-sowing seed treatments”, Orenburg State University Review, vol. 4, no. 48, pp. 72-74, 2014.
[4] N. T. Khlyzov, M. V. Fomina, E. A. Dzhaparov, “Production process analysis of the pneumatic seeding system in a grain seeder”, Bulletin of the International Academy of Agrarian Education, no. 17, pp. 131-134, 2013.
[5] N. T. Khlyzov, M. V. Fomina, E. A. Dzhaparov, “Defining parameters for pneumatic seed transportation system”, Bulletin of the International Academy of Agrarian Education, no. 17, pp. 135-139, 2013.
[6] S. G. Mudarisov, I. D. Badretdinov, A. V. Sharafutdinov, “Modelling a pneumatic system for a grain seeder”, Farm Mechanization and Electrification, no. 2, pp. 10-12, 2010.
[7] S. G. Mudarisov, I. D. Badretdinov, A. V. Sharafutdinov, “Modelling seed distribution in pneumatic seeders”, Farm mechanization, n. 3, pp. 8-9, 2010.
[8] G. Bourges, M. Medina, Air-seeds flow analysis in a distributor head of an “air drill” seeder. Acta Horticulturae. 1008.10.17660. ActaHortic. 2013. 1008.34, 2013.
[9] G. Bourges, M. Medina, Modelling and simulation in a component of an air planter, 2014. Ingeniena y Ciencias Aplicadas: Modelos Matematicos y Computacionales. Sociedad Venezolana de Metodos Numericos en Ingeniena, vol. 19-25, 2014.
[10] G. Bourges, J. Eliach, M. Medina, “Comparacion entre resultados experimentales y numericos en un cabezal distribuidor de sembradora air drill”, Mecanica Computacional, vol. 8, no.7, pp. 2671-2674, 2015.
[11] G. Bourges, J. J. Eliachb, M. A. Medinac, “Numerical Evaluation of a Seed Distributor Head for Air Seeders”, Chemical Engineering Transactions, vol. 58, 2017.
[12] M. Bayati, C. Johnston, CFD-DEM Investigation of Seed Clustering in an Air Seeder with the Immersed Boundary Method, Available: https://www.radix-ic.com/news/radix-cfd-team-recognized-for-work-on-seed-clustering-air-seeders/
[13] A. Yatskul, J. Lemiere, “Experimental determination of flow concentration for pneumatic conveying systems of air-seeders”, INMATEH-Agricultural Engineering, vol. 44, no. 3, pp. 19-26, 2014,
[14] K. N. Volkov, V. N. Emel’yanov, Gas particle flow. Literature of the Department of Physics and Mathematics. Moscow, 2008, pp. 600.
[15] A. M. Dzyadzio, A. S. Kemmer, Pneumatic transport at grain mills. Spike. Moscow, 1967, pp. 295.
[16] V. F. Dunskiy, N. V. Nikitin, M.S. Sokolov, Monodispersed aerosols. Science. Moscow, 1975, pp. 188.
[17] Yu. M. Veretennikov, et al., Monodispersed industrial aerosols. Proceedings of the academic conference on the scientific technical problem “Creation and implementation of the monodispersed technologies of liquid hydrocarbons combustion and introduction of pesticides instead of the polydispersed. Moscow, TsNSKhB RASKhN Publ., 2013, pp. 28.
[18] OST 10 6.1–2000, Farm machinery testing. Spraying and power fluid making machines. Methods of functions estimation. Ministry of Agriculture and Food of Russia. Moscow, 2000; pp. 53.
[19] S. T. Hammond, The taskers pateson MKB fertispread. Power Farm, 1972.
[20] P. W. James, G. F. Hewitt, P. B. Whalley, Droplet Motion in Two Phase Flow. Proc. of the ANS/ASM/NRC Inst/ Topical Meeting on Nuclear Reactor Thermohydraulics. Report NUREG/CP-0014, pp. 1484-1503.
[21] S. R. Schmehl, H. Rosskamp, M. Willmann, S. Witting, “CFD Analysis of Spray Propagation and Evaporation Including Wall Film Formation and Spray/Film Interaction”, Int. J. of Heat and Fluid Flow, vol. 20, pp. 520-529, 1999.