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Continuum Modeling of Corn Stover Feedstock through a Compression Feed Screw

Source: AIChE
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    AIChE Member Credits 0.5
    AIChE Members $19.00
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    AIChE Undergraduate Student Members Free
    Non-Members $29.00
  • Type:
    Conference Presentation
  • Conference Type:
    AIChE Annual Meeting
  • Presentation Date:
    November 8, 2021
  • Duration:
    15 minutes
  • Skill Level:
    Intermediate
  • PDHs:
    0.50

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Controllable continuous feeding of biomass through a compression feed screw in an ethanol biorefinery is essential for economic operation. A coupled Eulerian-Lagrangian finite element method model is developed to simulate the feeding of corn stover through a pilot-scale compression feed screw. The bulk corn stover is modeled using an isotropic modified (density-dependent) Drucker Prager Cap (mDPC) constitutive relation. The yield surfaces of the mDPC model capture plastic densification and shear failure of the material. A uniaxial single-ended die compaction test in an instrumented punch-die is used to calibrate compression characteristics, elastic properties, and wall friction properties of biomass. Direct shear tests are performed to partially calibrate shear failure properties of biomass. A sensitivity analysis of compression feed screw performance to mDPC model parameters is presented to assess the possibility of calibrating only a subset of material properties.
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Checkout

Checkout

Do you already own this?

Pricing


Individuals

AIChE Member Credits 0.5
AIChE Members $19.00
AIChE Graduate Student Members Free
AIChE Undergraduate Student Members Free
Non-Members $29.00
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