Numerical Simulation on Air Flow Field of Tangential Longitudinal Axial Combine Harvester

Abstract:

Withthe use and popularization of the tangential longitudinal axial combineharvester,the cleaning device of high loss rate and impurity rate continuouslyemerging.In order to analyses the reason of cleaning performance is low,thestudy for airflow field distribution of thetangential-longitudinal axial combine harvester has been carried out.Based onhomogenization when Reynold continuous equation and navier-stokes equation andthe renormalization group (RNG) kappa epsilon turbulence model predominateconstitute a closed equations,Using CFD simulation software simulated thecleaning shoe airway airflow.The simulation results show that the cleaning shoeair distribution is symmetrical in the screen surface width direction.Along thescreen surface height direction airflow velocity decreases gradually,Along thescreen length direction ,at the front of the sieve air velocity is low,Near themiddle of the screen as to achieve the maximum of air velocity.And for cleaningshoe air flow field were measured experiment, verify the accuracy of flow fieldsimulation.

• Periodical: Advanced Materials Research (Volumes 971-973)
• Pages: 605-608
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.971-973.605
• Online since: June 2014
• Authors: Yao Ming Li*, Fang Li
• Keywords: Air Flow Distribution, Cleaning Device, Numerical Simulation, Tangential Longitudinal Axial

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DOI: 10.1016/s0140-7007(01)00014-7