The necessity of 3D CFD method on simulating fluid flow over conveyance structures

Abstract

This study investigated the application of 3D CFD models in alignment with the project's objectives and the spatial extent of the target region. It included a comparative analysis of the advantages and disadvantages of 1D and 3D CFD models, considering factors such as flow representation, geometric complexity, and computational resource requirements. A case study of the Giang Ma spillway, characterized by its intricate geometry, was conducted to simulate flow depth, velocity, and rapid flow fields using both 1D and 3D models. Significant differences observed in numerical results at specific cross-sections highlighted critical considerations for design engineers. Keywords: Conveyance structures, 3D CFD model, 1D CFD model