Browsing by Person "Miu, Petre I."

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    Simulation of Threshing and Separation Processes in Threshing Units
    (2000) Miu, Petre I.; Kutzbach, Heinz Dieter
    For a better understanding of threshing and separating processes and for further increase of the performance of modern combine harvesters two universal stochastic mathematical models quantifying the grain and material other-than-grain (MOG) in the threshing and separation processes in both tangential and axial threshing units are presented. One model describes the percentages of unthreshed grain, free grain and se- parated grain over the length of threshing space: concave or rotor length. Threshing loss and separation loss can also be predicted. For axial threshing units have been developed generalized functions that al- low to predict the influence of crop properties and functional and design parameters on the above-mentioned process indices. The second model quantifies the cumulative percentages of separated MOG, separable MOG and unfragmented MOG (stems). Very good agreement of predic- ted and experimental data showed the validation of presented models.