The Investigation of Turbine and Exhaust Interactions in Asymmetric Flows: Part 2 — Turbine-Diffuser-Collector Interactions

Abstract

Part 2 of this paper describes the investigation of steam turbine and exhaust hood interactions in asymmetric flows by using a multiblock multigrid 3D Navier–Stokes solver incorporating an actuator disc model. The interactions among the turbine, diffuser and collector are analyzed by using a flow model. Numerical simulations for two exhaust hoods are performed to understand the flow details and to verify the flow model analysis. Based on the understanding of turbine and exhaust interactions, suggestions for the design of efficient exhaust systems are given.