![]() The Settings window for the Electric Currents physics interface, wherein the Equation section has been expanded. The terms being contributed to the equation by the node are also highlighted with a dotted line displayed under the respective part of the equation (as seen in the above screenshot), except for the parent physics interface node (shown below). In the Equation section, the mathematical equations applicable to the node, and the selected study type, are displayed. The Settings window for the Current Conservation node, wherein the Equation section has been expanded. You can see the equation for any physics node in your model by selecting the respective node and in the Settings window, expanding the Equation section. We will also demonstrate how to perform all of the items listed above using an example toward the end of this article. In this article, you will learn how to both view and access the equations and variables for physics feature nodes. Define custom multiphysics couplings between physics interfaces.More easily search and find variables defined by each physics interface and physics feature node.Edit any variables and equation contributions defined and used internally by the software.Access and use the variables when formulating expressions.See the names of variables and the quantities each one defines.See how the variables are calculated by the software.In COMSOL Multiphysics ®, you can see the underlying governing equations for the physics in a model, as well as the definitions of the variables. Viewing and Accessing the Equations and Variables for Physics Feature Nodes
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