In an embodiment, the modeling component 104 can integrate a first 3D model associated with a first device (e.g., a first mechanical device and/or a first electronic device) and a second 3D model associated with a second device (e.g., a second mechanical device and/or a second electronic device) to generate a 3D model for a device. For example, a 3D model generated by the modeling component 104 can be a combination of two or more 3D models. In an aspect, first geometric features of the first 3D model can be combined with second geometric features of the second 3D model. The first geometric features of the first 3D model can include, for example, chambers, cavities, channels, and/or other geometric features of the first 3D model. Similarly, the second geometric features of the second 3D model can include, for example, chambers, cavities, channels, and/or other geometric features of the second 3D model. As such, chambers, cavities, channels, and/or other geometric features of the first 3D model and the second 3D model can be combined. In another embodiment, the first 3D model can comprise a first set of supply nodes and a first set of sink nodes that form a first flow network for characteristics of the first 3D model. For instance, fluid provided through the first 3D model can flow from a supply node to a sink node of the first 3D model. Additionally, the second 3D model can comprise a second set of supply nodes and a second set of sink nodes that form a second flow network for characteristics of the second 3D model. For instance, fluid provided through the second 3D model can flow from a supply node to a sink node of the second 3D model. The modeling component 104 can combine the first flow network of the first 3D model with the second flow network of the second 3D model. For example, the first set of supply nodes of the first 3D model can be combined with the second set of supply nodes of the second 3D model. Furthermore, the first set of sink nodes of the first 3D model can be combined with the second set of sink nodes of the second 3D model.