[musa19]

Hello,

I need some help. I am having problems in displaying the velocity magnitude for pitching airfoil within tecplot.

I imported fluent. cas and .dat files. I have tried both methods, creating new variables and secondly using velocity magnitude equations.

There are two methods, which are described below:
General method (works in Tecplot 360 and Focus)
In this method, the mathematical definition of vector magnitude is entered and the calculated result is stored in a new variable. After loading your data, do the following:
Go to Data > Alter > Specify Equations and enter the following equation:
{Velocity Magnitude} = sqrt({U}**2+{V}**2)
Click Calculate
Using the CFD Analyzer (only works in Tecplot 360)
In this method, the velocity magnitude calculation is performed by the CFD Analyzer and the calculated result is stored in a new variable. After loading your data, do the following:
Go to Analyze > Field Variables
Under Convective Variables, Select the Velocity option, click the Select button, and choose the velocity variables, where U, V, and W, are the X, Y, and Z components of velocity, respectively.
Go to Analyze > Calculate Variables
Click the Select button, select Velocity Magnitude from the list, and click OK. SOURCE TECPLOT

THE Problem is I am not getting anything in my velocity magnitude, rest of the contours are providing their results, like pressure, vorticity etc. The velocity magnitude is not providing anything. I am attaching some pictures from the results and components for velocity that I have. I appreciate any help provided.
Thank you.

[wsfowler]

A few questions come to mind.

• Did you run your simulation in a no-slip condition such that your surface velocities will be zero?
• Have you verified that your U & V variables have non-zero values?
• If you have a transient simulation are to looking at the first time step?
• Have you adjusted the contour levels to a realistic range?

If you still can't figure it out, contact support@tecplot.com.

Thanks,
Scott