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{include: ANSYS WB - Airfoil - Panel}

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In this step, we will open fluent and define the boundary conditions of the problem. If you haven't already, close the meshing window to return to the _Project Outline_ window. Now, Double click *Setup*.  The _Fluent Launcher_ Window should open. Check the box marked {color:#990099}{*}{_}Double Precision{_}{*}{color}

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!Fluent Launcher.png!
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Click {color:#990099}{*}{_}OK{_}{*}{color} to launch Fluent. The first thing we will do once Fluent launches is define the model we are going to use. We do this by going {color:#990099}{*}{_}Problem Setup > Models > (Double click) Viscous-Laminar{_}{*}{color}. This will open the _Viscous Model_ Menu Window. Select {color:#990099}{*}{_}Inviscid{_}{*}{color} and press *OK*.

Now, we will specify characteristics of the fluid. Because we specified the fluid as inviscid, we will only have to define the density of the fluid. To make matters even simpler, we are only looking for non-dimensionalized values like pressure coefficient, so we will define the density of our fluid to be 1 kg/m^3. To define the density, click {color:#990099}{*}{_}Materials > (double click) Air{_}{*}{color}. This will launch the _Create/Edit Materials_ window. 

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!create materials.png!
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Under _Properties_, ensure that density is set to {color:#990099}{*}{_}Constant{_}{*}{color} and enter {1 kg/m^3} as the density. Click {color:#990099}{*}{_}Change/Create{_}{*}{color} to set the density.

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