# Smooth Transition Inflation Option In ANSYS Meshing

Adjusting the transition option according to the physical model in ANSYS® Meshing is very important. You need to select the proper transition option for your FEA configuration. So we explained the whole Inflation Options in Mechanicalland. In this article, we will explain the Smooth Transition option for Inflation Option in ANSYS® Meshing.

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## How To Adjust Inflation Option To Smooth Transition In ANSYS® Meshing?(Illustrated Expression)

To adjust the Inflation Option in ANSYS® Meshing as Smooth Transition, click on the Mesh tab as shown by the green arrow above then click on the Inflation section as shown by the red arrow. So you can select an Inflation Option as Smooth Transition inside the red box.

The smooth transition option calculates the local initial height of tetrahedral elements according to the total height of the elements, so the transition between each layer is smooth. The initial height will same for uniform mesh, but will be varying for the non-uniform mesh.

Transition Ratio: This is the volume-based growth rate of the last tetrahedral elements. Works best in planar surfaces, if there is curvature, there can be inaccuracies in the inflation layer.

Maximum Layers: This is the maximum layer number that will be created on the mesh structure. You can enter 1 to 1000 for it.

Growth Rate: The rate of thickness between adjacent layers starting from the face that is Inflation Option is used.

The height of the last prism mesh equals the multiplication of average edge length with transition ratio. So the height of the first layer is calculated with this formula;

Height of last prism = (height of first layer)* (Growth Rate ^ (Number of layers-1))

So you can easily make comments about increasing the growth rate means what for a smooth transition.

These are very useful information to mesh your structure according to the mathematical informatiıons in ANSYS® Meshing.

## Conclusion

The general logic for Smooth Transition in ANSYS® Meshing is like that.