This work presents a design of drying small food particles like tea, tobacco with a reduced height of about fifty percent compared to the convectional straight type. The geometry is designed such that, the particle leave the dryer at an average constant time, to prevent variation in the dryness properties,Simulation result of straight type dryer in FLUENT, the commercial software is validated by industrial data implemented in MATLAB, which shows reasonable agreement. A reduced height type with a swirling or screw type is designed to reduce the height and also maintain the drying residence time.
Contents
1 Notation
2 Introduction
2.1 Background
2.2 Project Description
2.3Method
2.4 Limitation
3 Overview of Drying Process
3.1 Drying Process
3.2 Available Convective types
3.3 Existing Work
4 Theoretical Analysis
4.1 Derivations of Equations
5 Available Experimental Data
6 Numerical Analysis
6.1 Control-Volume Formulation (F V M) or (FEM)
6.2 The SIMPLE algorithm
6.3 Implementations Of Boundary Conditions
6.4 Drying In a Straight Pipe Model
6.5 Design and Working principle of the Swirling Dryer
7 Simulation
7.1 Choice of Commercial Softwear
7.2 Problem Formulation in Commercial Softwear
7.3 Boundary Condition
7.4 Assumptions
7.5 Postprocessing
8 Result And Analysis
8.1 Single Phase
8.2 Double Phase
8.3 Swirling type double phase
9 Conclusion and Future Work
9.1 Conclusion
9.2 Future Work
10 References
11 Appendices
A. Other Work In FLUENT
B. MATLAB Code
Author: Gao Feng, Adelere Oluwafemi. A.
Source: Blekinge Institute of Technology
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