Fourier Transformation method for a blade Flutter case

 Modeling a blade flutter case using Fourier Transformation method

Here, we use Fourier Transformation method for investigating a blade flutter case. The self-exited vibration of blades because of fluid-structure interactions and aerodynamic forces is called blade flutter. In this section, you are going to learn about duplicating a passage, Initializing a profile, transient blade row analysis, periodic mesh motion, and monitoring aerodynamic damping. Here, for transient blade row analysis using Fourier Transformation method, only two passages are modeled. The blade vibration is modeled as forced periodic motion at fixed frequency with specified nodal diameter.  In CFX Turbo Mode you can easily duplicate a single passage within CFX-Pre.

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