Heat exchange systems, fluid-mechanical components, and multi-domain systems all require interfacing components that link one network to another. In the Fluid Network Interfaces library, you can find heat exchangers and heat exchanger components, actuators with multiple fluid chambers, and a multi-fluid tank. Additionally, you can connect multiple domains with interface blocks to make use of features in either library.
If a specific component does not yet exist in a domain library, you can build your own using the Simscape language. For more information, see Creating Custom Components.