### 36.4.4. Passages and Alignment

This section shows the details of the mesh geometry. In the default state, it will display the number of blades in the mesh file and the number in 360 degrees. To change these values click the Edit button.

For quick response, the Preview button provides immediate feedback of the changes made. Once the correct settings are selected, clicking Done will apply the transformation. You can select Cancel to discard your latest change or select Reset to return all parameters to their default values.

#### 36.4.4.1. Passages/Mesh

Passages Per Mesh is an indication of the number of blade passages that exist in the selected mesh file. The value will normally be 1.

#### 36.4.4.2. Passages to Model

This parameter is used to specify the number of passages in the section being modeled. This parameter is optional for most cases except for Transient Blade Row using the Fourier Transformation method. For the Fourier Transformation method, you have to specify at least two passages. This value is used in CFD-Post. For details, see Fourier Transformation in the CFX-Solver Modeling Guide.

#### 36.4.4.3. Passages in 360

This parameter is optional and is used to specify the number of passages in the machine. This value is used in CFD-Post.

If this value is not specified it is automatically calculated based on how many copies of the mesh are required for modeling a full 360 degree section.

#### 36.4.4.4. Theta Offset

Rotates the selected mesh, about the rotational axis, through an angle theta. The offset can be a single value or set to an expression by clicking .

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