Introduction
The purpose of this tutorial is to demonstrate the use of the Solid Oxide Fuel Cell (SOFC) model in FLUENT 6.3. The SOFC model is provided as an add-on module with the standard FLUENT licensed software. The SOFC module comprises a UDF library (containing a set of user-de ned functions) and a pre-compiled scheme library (containing the graphical and text user interface). The SOFC module has to be loaded and activated before calculations can be performed

This tutorial demonstrates how to do the following
Load the SOFC module in FLUENT
 Set the parameters for the SOFC model
 Defi ne new solid materials for the anode, the cathode, and the electrolyte
 Set up appropriate boundary conditions and multigrid control parameters
Perform postprocessing to examine the distribution of current, voltage, temperatureand species throughout the fuel cell

Problem Description

The tubular SOFC under consideration is shown in Figure. The anode inlet is fed with 2.48949e-07 kg/s of humidi ed hydrogen at 973 K. The cathode inlet is fed with 1.3705e-05 kg/s of air at 973 K. The cathode and anode comprise two concentric cylinders each 130 mm long. The inner and outer diameters of the cathode are 4 and 6 mm respectively. The inner and outer diameters of the anode are 6 and 7 mm respectively

The active electrolyte material, which has a thickness of 40 microns, is pressed between the anode and cathode layers
In this simulation, the outer walls of the anode and cathode current collectors are kept insulated. The fuel and oxidizer travel through the porous anode and cathode materials toward the electrolyte region. Fuel is oxidized electrochemically at the interface of the electrolyte region and the anode. Oxygen in the incoming air is reduced electrochemically at the interface of the electrolyte region and the cathode. As a result of the overall reaction, water is formed at the anode side. The SOFC model is used to examine the current, voltage species, and temperature distribution throughout the fuel cell



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