Combine harvesters are important for modern agriculture since they can significantly
increase the efficiency of grain harvesting process. The cleaning unit is one of the core …

In this work, a numerical study of the gas–solid flow in an air-and-screen cleaning shoe is
carried out by use of the combined Discrete Element Method (DEM) and Computational …

Highlights•Discrete element model of whole rice cluster in natural state established.•Flow
field characteristics inside the header analysed.•Harvesting process of strip**-prior-to …

The grain combine harvesters of China generally exist problems such as low reliability, low
adaptability, and low intelligence and informationize. The cleaning device is one of the core …

Computational fluid dynamics (CFD), numerical analysis and simulation tools of fluid flow
processes have emerged from the development stage and become nowadays a robust …

Highlights•Proposing the calculation method for the degree of dispersion of all particles in
cleaning unit.•Mathematical models for cleaning performance prediction were established …

Highlights•An even-distribution flow guiding device developed with self-adaptive
adjustment.•Design scheme and optimisation process using DEM simulation of guide …

Highlights•Resistance of working load at each duct is estimated under working
condition.•Variation of airflow and pressure in each duct were analyzed in detail.•With the …

The threshing of frozen corn is accompanied by breakage and adherence, which influence
the cleaning performance when the corn-cleaning mixture is separated and cleaned. In …

Highlights•A prototype cleaning fan with a central plate developed and optimised.•Optimised
fan improves the uniformity of the outlet airflow distribution.•Optimised fan could enhance the …