Shape model of grain and straw using coupling elements and flight simulation of threshing unit of combine by discrete element method

Yuko Ueka, Masami Matsui, Eiji Inoue, Mitsuoka Muneshi, Takashi Okayasu

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The threshing unit of a combine comprises a multiphase flow; therefore, it is essential to consider it on the basis of the flow model. In this study, flight simulation by DEM with fixed wind velocity was carried out. The grain and straw were considered to be ellipsoidal and cuboidal, respectively. A two-dimensional model coupling with a circle element was constructed. Each flight trajectory was reproduced in terms of the initial conditions and changes in winnowing velocity. The average flight velocity of the grain was 0.2 m/s higher than that measured in the experiment. It can simulate to closer phenomenon by mixing different particle mass and straw, analyzing the increase in particles and linking it with fluid analysis.

Original languageEnglish
Pages (from-to)34-39
Number of pages6
JournalEngineering in Agriculture, Environment and Food
Volume7
Issue number1
DOIs
Publication statusPublished - Jan 1 2014

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Straw
Finite difference method
straw
flight
Multiphase flow
wind speed
trajectories
methodology
Trajectories
Fluids
Experiments

All Science Journal Classification (ASJC) codes

  • Food Science
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

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AU - Matsui, Masami

AU - Inoue, Eiji

AU - Muneshi, Mitsuoka

AU - Okayasu, Takashi

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