NUMERICAL SIMULATION OF 2D HORIZONTAL COOLING WATER DISCHARGE IN GENERALIZED CURVILINEAR COORDINATE

1. INTRODUCTIONResearch on the movement characteristics ofcooling water is a hot spot presently , which hasgreat significance to maintain the balance of eco-logical system. Mathematical models and physicalmodels are major means for this study .In recentyears , Chen1 ,2]has presentsed a 2D horizontalmathematical model based on the hybrid methodand finite element mesh, Zhang3]has provided afinite layer model for 2D thermal density flowinopen channel . Wu4]has developped an unsteady2D h…

NUMERICAL SIMULATION OF 2D HORIZONTAL COOLING WATER DISCHARGE IN GENERALIZED CURVILINEAR COORDINATE

2D horizontal model is one of the major mathematical methods for the research on cooling water discharge from the power plant. In this paper, the shallow water equations are transformed under the generalized curvilinear coordinate system and the elliptic differential equations are used to generate curvilinear grids, so a model in generalized curvilinear coordinate is presented to simulate 2D horizontal cooling water. Governing equations of the model are discretized by finite volume method, and non-staggered grids and SIMPLE algorithm are introduced to simplify the program during the discretization. This model is used to simulate the movement of cooling water in a simplified meandering channel and a natural channel, calculating results indicate this model can correctly reflect the movement rules of cooling water, which verifies the model can be applied in engineering practice.