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Article
Modelling and Simulation of Momentum, Heat, and Mass Transfer in a Deep-Bed Grain Dryer
Drying Technology (2003)
  • Istadi Istadi, Diponegoro University
  • Johnner P. Sitompul
  • Siswo Sumardiono, Diponegoro University
Abstract

This article concerns the modelling and simulation of a deep-bed grain dryer in a large diameter-column. Two-dimensional (2D) models of deep-bed grain dryers were built by considering simultaneously momentum, heat, and mass transfer in the drying phase together with coupled heat and mass balance in the grain phase. The dynamic equations are solved numerically by using finite difference method. The momentum equations are applied to simulate pressure drop and velocity field of the drying air across the bed. The mass and heat balance in the two phases determine the profile of temperature and moisture content in both phases. Further, drying rate curves for various temperature of inlet drying gas together with moisture content of grainwere simulated. The simulated profiles are in close agreement with experimental data

Keywords
  • Deep bed drying,
  • Coupled momentum mass heat transfer,
  • Navier-Stokes equation
Disciplines
Publication Date
August, 2003
Citation Information
Istadi Istadi, Johnner P. Sitompul and Siswo Sumardiono. "Modelling and Simulation of Momentum, Heat, and Mass Transfer in a Deep-Bed Grain Dryer" Drying Technology Vol. 21 Iss. 2 (2003)
Available at: http://works.bepress.com/istadi/6/