General Water Supply System Simulation Model: WASP

Abstract

WASP is a mass‐balance quasi‐simulation computer package developed to facilitate analysis of the performance of the head works and transfer components of a water supply system under different operating policies and changes to system configuration. Its generality is due to the use of a network linear program (LP) which allows system components to be connected in virtually any configuration. The user defines an operating policy in terms of easily understood rules which guide the network LP when it makes seasonal assignments of water within the water supply system. WASP is based on a network LP to take advantage of computer codes up to 100 times faster than standard LP codes. This paper discusses the principles used to formulate the network LP. It then presents a case study involving a complex urban water supply system to demonstrate the generality of WASP. Finally it reviews the input/output features of WASP which streamline its use.