Specifying Two-Phase Flow in Modeling Pneumatic Systems Performance of Farm Machines
S. Mudarisov, E. Khasanov, Z. Rakhimov, I. Gabitov, I. Badretdinov, I. Farchutdinov, F. Gallyamov, M. Davletshin, R. Aipov, R. Jarullin
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.
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