Application of coupled CFD-DEM simulation to separation process in combine harvester cleaning devices

1. Front Matter

   Pages I-XX

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2. Introduction

   • Christian Korn

   Pages 1-3

3. State of the Art

   • Christian Korn

   Pages 4-50

4. Approach and Method

   • Christian Korn

   Pages 51-66

5. Process Abstraction, Parameterization and Sensitivity

   • Christian Korn

   Pages 67-107

6. Numerical and Experimental Tests of Separation in a Combine Cleaning Device

   • Christian Korn

   Pages 108-169

7. Summary, Conclusions and Outlook

   • Christian Korn

   Pages 170-178

8. Back Matter

   Pages 179-191

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This book discusses the application of the coupled CFD-DEM approach for simulating the separation of grain and material other than grain in combine harvester cleaning devices. Based on a literature study, it describes the most important influencing factors and presents a database for particle parameterization. It investigates the separation process in two steps with differing levels of process abstraction. The first step involves numerical separation in a vertically oscillating box with airflow, and in the context of a sensitivity study, investigates the effect of selected material, contact and operating parameters on the target variables’ separation time and grain purity. In the second step, the numerical separation process was performed in a 200 mm wide segment of a combine harvester cleaning device. The numerical results were then compared with experimental investigations in order to confirm the method’s applicability. 

• Combine cleaning device
• Separation process
• Simulation
• CFD-DEM
• Particle modeling

• Institut für Naturstofftechnik, Technische Universität Dresden, Dresden, Germany

  Christian Korn

Christian Korn studied Mechanical Engineering at the Technical University of Dresden and has been a Research Assistant at the Chair of Agricultural Systems an Technology since 2010.

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