Flow mechanisms in axial turbine rim sealing
نویسندگان
چکیده
منابع مشابه
Interaction of Rim Seal and Annulus Flows in an Axial Flow Turbine
A combined computational fluid dynamics (CFD) and experimental study of interaction of main gas path and rim sealing flow is reported. The experiments were conducted on a two stage axial turbine and included pressure measurements for the cavity formed between the stage 2 rotor disc and the upstream diaphragm for two values of the diaphragm-to-rotor axial clearance. The pressure measurements ind...
متن کاملInteractions between turbulent open channel flow, power and the wake of an axial-flow marine turbine
I. Introduction Until recently, an understanding of the range of scales of turbulent flow and its dynamic interaction with the performance and wake characteristics of axial-flow marine hydrokinetic turbines was lacking. Advancing this area of knowledge within the field of marine and hydrokinetic energy research, development, and deployment will lead to more efficient turbine operations and redu...
متن کاملexperimental and numerical study of partial admission effect on flow distribution in supersonic turbine axial-gap
in high-pressure axial turbines, when the fluid mass flow is low, the supersonic blades are being used to obtain a high specific work output. to prevent losses due to low blade aspect ratio, the turbine is used in partial admission conditions. the turbine stator is a group of convergence-divergence nozzles that provides the supersonic flow. the design of these nozzles is important, because ther...
متن کاملComputational and Mathematical Modelling of Turbine Rim Seal Ingestion
Understanding and modelling of main annulus gas ingestion through turbine rim seals is considered and advanced in this paper. Unsteady 3-dimensional computational fluid dynamics (CFD) calculations and results from a more elementary model are presented and compared with experimental data previously published by Hills et al (1997). The most complete CFD model presented includes both stator and ro...
متن کاملAIAA 2001–0529 Unsteady Flow Investigations in an Axial Turbine Using the Massively Parallel Flow Solver TFLO
The results from two numerical simulations of the unsteady flow in a 1-1/2 stage axial-flow turbine are presented and compared with experimental data to show both the effect of blade count on the solution accuracy and the time-averaged and unsteady flow physics present. The TFLO three-dimensional, multi-block, massively parallel turbomachinery flow solution procedure is used to simulate the flo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
سال: 2018
ISSN: 0954-4062,2041-2983
DOI: 10.1177/0954406218784612