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Before FLUENT launches, we will be prompted to set some options. In Options check the box next to Double Precision. If you have a dual processor, you can set the option under Processing Options to Parallel, and change the Number of Processes to 2.

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Once the options are set, click OK.

Problem Setup - General

Now, FLUENT should open. We will begin setting up some options for the solver. In the left hand window, under Problem Setup, select General. The only option we need to change here will address the fact that pipe domain we created is axisymmetric. Under 2D Space, click the radio box next to Axisymmetric.

Models

In the outline window, click Models. We will need to utilize the energy equation in order to solve for the temperature. Under Models highligh Energy - Off and click Edit...