CAD Solid Modeling as an Interactive Tool for Applications Involving Multicomponent Phase Diagrams in Geological Education

Abstract

Multicomponent phase diagrams are essential tools for the interpretation of many geological phenomena, yet, primarily due to difficulties with the visualization of three-dimensional phase diagrams, multicomponent phase-equilibria and related topics are traditionally difficult areas of instruction. However, modern computer-aided design (CAD) systems with solid modeling capabilities are widely available tools that are specifically designed for efficient construction, display, and manipulation of “three-dimensional objects” and, as such, are ideal for three-dimensional phase-diagram applications in the classroom. At the simplest level, solid-model phase diagrams for hypothetical systems or chemical systems of geological relevance can be used to create instructive still images or animations for slides or video tapes. The potential of the CAD technique is most fully realized, however, when students interact directly with the solid-model phase diagrams. CAD systems are user-friendly, menu-driven programs, and s...