Open a New Window to Begin Modeling
To open a New window:
On the Quick Access Toolbar (Windows users) or the Model Toolbar (macOS and Linux users), click the New button ().
Select File>New.
After the New window opens to the Model page, select an option:
Click the Model Wizard button () to open the Select Space Dimension window. Go to The Model Wizard section to continue.
Click the Blank Model button () to open COMSOL Multiphysics without any model set up in the Model Builder or return to the default COMSOL Desktop. You can then add components and physics interfaces to the model.
To enable the Physics Builder choose Preferences () from the File menu (Windows users) or from the Options menu (macOS and Linux users). Click Physics Builder and select the Enable Physics Builder check box.
After the applicable check box is selected, go to the Model Wizard and on the New page under Physics, click Physics Builder (). See the Physics Builder Manual for information.