This node defines the semicylindrical domains of a Battery Layers feature with a Flat-sided oval (prismatic) layer configuration. The selection of this node is locked to the selection of the parent Battery Layers feature and can be overridden by the selection of the Rectangular Block Selection node. In the selected domains, the anisotropic thermal conductivity tensor of the battery layers is defined using a multicylindrical coordinate system, with each origin placed at the center of a semicylinder and the longitudinal (winding) axis specified in the parent node settings. See the Battery Layers for more details.