Water Distiller Example Using Functional Analysis

This chapter contains an example that describes the application of SysML to the design of a water distiller system using a traditional functional analysis method. This example shows how SysML can be used to model a system with a traditional functional analysis approach. The problem also illustrates the application of modeling physical systems with limited software functionality. Examples of each SysML diagram are used to support the specification, design, and analysis, with fundamental SysML language concepts such as the distinction between definition and use. The method is familiar and intuitive to many practicing systems engineers. The example was originally developed by the International Council on Systems Engineering (INCOSE) to support the initial evaluation of the SysML specification. The following approach is used to address the problem: stating the problem, defining the model-based systems engineering approach, organizing the model, establishing requirements, modeling behavior, modeling structure, analyzing performance, and modifying the original design.