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studentFLUENT - Tutorial Library - User-Defined Scalars and User-Defined Memories
Ohmic heater schematic.
The purpose of this tutorial is to illustrate the use of user-defined scalars (UDS) and user
defined memories (UDM) for modeling the electric resistive heating of fluids.
Ohmic heating is an advanced food processing method used to heat liquid foods, where electricity is passed through the liquid food itself. Through this process, the electrical energy is converted to heat energy. Conventional food processing heating methods can damage food quality due to the relatively slow energy transfer rate and significant temperature gradients associated with conduction and convection driven heat transfer. In comparison, Ohmic heating uniformly heats the entire mass, ensuring a better quality product.
In this tutorial you will learn how to:
- Use UDS for modeling the electrical current continuity equation.
- Use UDM for storing data at each cell center.
- Use source terms to model volumetric heating.
- Carryout solver setup and perform iterations.
- Check for solution convergence.
- Examine the results.
- Perform post-processing using UDS and UDM.
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