Wadiso is a comprehensive computer program for the analysis and optimal design of water distribution networks. The program originated from the WADISO public domain model developed by Prof. Johannes Gessler of Colorado State University for the Army Corps of Engineers. Dr Erik Loubser, studying under the mentorship of Prof. Gessler, assisted with the development of a unique system design optimization module of the program. Subsequently a programming team employed by GLS Engineering Software (Pty.) Ltd., the South African based software development company responsible for development and support of Wadiso in South Africa, substantially improved the basic WADISO with regard to user friendliness and speed as well as interfacing with other application software such as water quality analysis, CAD, GIS and management programs. The improved WADISO was subsequently referred to as WADISO SA. During recent years WADISO SA was taken to a new level by the development of a full 32 bit Windows 2000/XP version. The latest edition is again named Wadiso as the name is now a registered trade mark in South Africa. The following is an overview of the features of Wadiso. The program integrates steady state simulation, time simulation, optimization, and water quality analysis with graphical displays of data and results into a single, most valuable tool for water engineers.
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