Revolve

To revolve planar objects into 3D, right-click a geometry or a work plane node, and select (

). Then enter the properties of the revolve operation, as shown in Figure 7-7.

From the list, select to revolve planar faces from the 3D geometry. Select the faces that you want to revolve in the Graphics window. These appear in the list. All selected faces must lie in the same plane.

Alternatively, from the list, select to revolve objects from a work plane. In the list, select the work plane to revolve from. Select the objects that you want to revolve in the Graphics window. They appear in the list.

Click the button to toggle between turning ON and OFF the or selections.

Select the check box to unite the input objects with the revolved objects. Clear the check box to keep the revolved objects separate from the input objects.

Click the button to specify the start angle (default: 0 degrees) and end angle (default value: 360 degrees; that is, a full revolution) of the revolution. If you click the button you get a full revolution. This selection also enables the check box that controls if the original faces are kept in the revolved 3D geometry. Keeping these faces is necessary if you want to create a swept mesh. By default, COMSOL keeps such faces.

Select in the list to specify the revolution axis in the local coordinate system. When revolving work plane objects, the local coordinate system is defined by the work plane’s coordinate system. When revolving planar faces, the local coordinate system is defined by the face with the smallest face number in the first geometry object in the geometry sequence. Select in the list to specify the revolution axis in the 3D coordinate system. Select to specify an edge as revolution axis. Click the button to toggle between turning ON and OFF the selection.

Specify a point on the revolution axis in the local coordinate system in the and fields. Alternatively, if is , specify a point on the revolution axis in the 3D coordinate system in the , , and fields.

Specify a direction vector for the revolution axis in the local coordinate system in the and fields. Alternatively, if is , specify a direction vector for the revolution axis in the 3D coordinate system in the , , and fields.

Select the check box to create predefined selections (for all levels — objects, domains, boundaries, edges, and points — that are applicable) in subsequent nodes in the geometry sequence. To also make all or one of the types of resulting entities (domains, boundaries, edges, and points) that the resulting objects consist of available as selections in all applicable selection lists (in physics and materials settings, for example), choose an option from the ( if in a geometry part) list: , , , , or . The default is , which is suitable for use with materials and physics defined in domains. For use with a boundary condition, for example, choose . These selections do not appear as separate selection nodes in the model tree. Select to not make any selection available outside of the geometry sequence. From the list, choose a color for highlighting the resulting objects selection. See Selection Colors.

If you want to make the resulting entities contribute to a cumulative selection, select a cumulative selection from the list (the default, , gives no contribution), or click the button to create a new cumulative selection (see Cumulative Selections).

From the list choose to make the resulting objects available only in the feature’s geometry sequence. The default option means that the resulting objects become construction geometry if all input objects are construction geometry. Choose to never output construction geometry objects. For more information see Construction Geometry.