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First, the inlet must be defined using the Fluid Flow Conditions. In the Add drop down menu by Fluid Flow Conditions, select Inlet. Then, using the face selection tool, define the inlet as the end face of the volume closest to the triangular flameholder. Make sure to input the Velocity magnitude as 17.3 [m s^-1].

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Once the inlet is defined, the outlet is next. In the same drop down menu, choose Outlet to define an outlet at the other end of the flow volume. Assign a Gauge static pressure of 0 [Pa].

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Add a Symmetry condition from the Add drop down menu to the front and rear sides of the flow volume.

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Next, a Wall condition must be added to all surfaces that are not already defined. Wall can be found in the same Add menu as the previous conditions. AIM will automatically select every face that doesn't already have a constraint on it.

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Go to Step 5: Solution/Results

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