OS-E: 0400 Compressor Wheel

OptiStruct was used to run a free-free normal modes analysis on a gas turbine compressor wheel solid FE model.


fvcompressor
Figure 1. FE Model

Model Description

A solid hexa model of a gas turbine compressor wheel with fins was generated with HyperMesh. The model contained 44,369 grids and 31,022 solid hexa elements. A free-free modal analysis was conducted using OptiStruct to find the first twelve natural frequencies.

Results

The first six frequencies found were rigid body modes and can be disregarded.

The frequency results are:
Model #
Frequency
7
2.46
8
2.46
9
3.33
10
3.62
11
3.62
12
3.83

Model Files

The model files used in this example include:

<install_directory>/hwsolvers/demos/optistruct/examples/compressor.fem