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ISSN Online: 2377-424X

ISBN CD: 1-56700-226-9

ISBN Online: 1-56700-225-0

International Heat Transfer Conference 13
August, 13-18, 2006, Sydney, Australia

INVERSE DETERMINATION OF BIOCHEMICAL MODEL PARAMETERS IN POROUS MEDIUM CONVECTION WITH BIOCHEMICAL HEATING

Get access (open in a dialog) DOI: 10.1615/IHTC13.p5.140
12 pages

要約

The processes involved in biological reactors, such as in composting reactors for instance, are essentially non-isothermal, controlled by internal heat generation from microbial oxidation. This activity can be described adequately by a biochemical model of the Monod type. The inverse problem approach with adjoint equations can be adapted to this problem to achieve a solution for the determination of the maximum specific growth rate constant from internal temperature measurements.
The volumetric source is assumed proportional to the rate of consumption of a substrate by a biomass. A formulation based on the conjugate gradient method with adjoint equations is given for an arbitrary domain in two dimensions, with a Monod model to represent the biochemical activity. The direct, sensitivity and adjoint sets of equations are derived for a Boussinesq fluid, with convection-diffusion of the substrate within the porous matrix. Numerical calculations by control volumes are carried out for Rayleigh and Lewis numbers involved in a typical problem under realistic temperature and concentration boundary conditions. The influence of noisy input data and the issue of regularization are considered also.