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Mesh Setting

General mesh size

The general mesh size should be less than one sixth the wavelength of the maximum frequency.

You may increase the mesh size up to one third the wavelength if you want to reduce the number of meshes.

 

In this example, the wavelength at 20kHz is 340/20000 = 0.017 [m].

The mesh size should be less than 17/6 = 2.83 [mm], so set the mesh size to 3 mm.

 

To specify the general mesh size, on the [Model] tab,


click [Analysis Condition] . The [Analysis Condition Setting] dialog box will appear.

 

On the [Mesh] tab,

deselect [Calculate the general mesh size] and enter a value at [General mesh size].

Element type

Select 2nd-order element for the element type.

 

Mesh size around the sound source

The mesh size should be one tenth the size of sound source, and must be less than general mesh size.