抄録
A computer aided piping design system is developed using an object-oriented language "Smalltalk-80". The piping design process is characterized by trial-and-error treatments, to add or delete the piping elements or to change the piping diameter in the course of the design process so as to satisfy the design condition. In the system the piping elements are represented as the "object", based on the computer language Smalltalk-80, which results in 1) flexible node I building and easy modification, 2)easy simulation to determine the total head and flow rate in the piping, 3)graphical representation of the design model of the piping and interactive control of the design process by the designer. The system provides a flexible approach to handling the piping design. It is also ascertained that the system can easily be enlarged to more complicated piping systems.
