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h1. Numerical Solution
The user defined function from the Pre-Analysis section defines the lift function in C and defines the pressure and centroid of each face, then calculates the quantity called liftFunc, defined as
{latex}\begin{eqnarray}
\phi = -psin(\theta)
\end{eqnarray}{latex}
Once the user defined function is implemented, Fluent will use liftFunc as a boundary condition to integrate the specified user defined scalar over the entire specified surface.
User-defined function implementation to obtain the lift coefficient around the cylinder is as follows.
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[Go to Step 6: Numerical Results|SIMULATION:User Defined Functions - Numerical Results]
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Numerical Solution
Go to Step 6: Numerical Results
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