Journal of
Engineering and Technology Research

  • Abbreviation: J. Eng. Technol. Res.
  • Language: English
  • ISSN: 2006-9790
  • DOI: 10.5897/JETR
  • Start Year: 2009
  • Published Articles: 198

Full Length Research Paper

Theoretical modeling of strain in the single screw feeder of cassava flash dryer

Noutegomo Boris
  • Noutegomo Boris
  • Laboratory of Mechanical and Production Engineering, University of Douala, Douala, Cameroun.
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Djeumako Bonaventure
  • Djeumako Bonaventure
  • Department of Mechanical Engineering, ENSAI, University of Ngaoundéré, Ngaoundéré, Cameroun.
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Ndjouenkeu Robert
  • Ndjouenkeu Robert
  • Department of Health and Applied Nutrition, ENSAI, University of Ngaoundéré, Ngaoundéré Cameroun.
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  •  Received: 01 April 2016
  •  Accepted: 07 September 2016
  •  Published: 31 July 2017


The aim of this study is to model screw feeder unit to handle granulated wet cassava to the flash dryer column. The knowledge of the flow behavior, physical and mechanical properties, rheology of the product and the geometrical characteristics of feeders unit were essential to evaluate the best conditions of handling granulated cassava based on the theory of virtual works. The effect of granular media strain on the rotational speed which is limited to 2 rps corresponding to the elastic limit of 30% was studied. With the same strain limit, maximum screw length of 1300 mm and the maximum residence time of 100 s in the bin were identified as the best area used to design the screw feeder unit and conduct the process operation. The modeling of the strain was based on the theory of virtual works or energies.


Key words: Modeling, virtual works, strain, screw feeder, cassava.