| Use of a Shell Model and a CFD Flow Model Provides a Detailed Simulation of Drying Phenomena |
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| ASC combines its Computational Fluid Dynamics program with a 1-D shell model to define the drying behavior within a bed of small bodies, such as food particles in a process dryer. The CFD model is used to define the air flow through the bed of particles. The air flow is affected by the resistance, heat transfer, and mass transfer from the bed of particles. The 1-D heat and mass transfer within the food particles is calculated for each of the food particles shown in the schematic below. Variations in the air temperature and moisture through the bed results in different distributions for each particle. Sample results are presented from both the CFD and 1-D shell models. Colors in the line graph refer to body locations shown below.  |
| Analysis of Food Processing Operation Using a Coupled CFD/Food Model |
Author: Andrew L. Banka, P.E. Presented at the Oct. 1, 2003, AACC Conference in Portland, OR |
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| Outline | |||
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Motivation | ||
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Methods for improving food processing operations | ||
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Effective simulations must include: | ||
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Why CFD alone won't do: | ||
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Approach | ||
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Couple CFD model of equipment to food models | ||
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CFD model details | ||
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Food model details | ||
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Product Movement | ||
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Example Case | ||
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Model Validation | ||
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Applications | ||
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Summary | ||
Click here to download a PDF version (2.2 MB) of the full presentation. |
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