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Calculating Study of the Turbine at Last Stage Flow Field in the Small Volume Flow Condition

Authors
  • Jiang, Tieliu
  • Jin, Jianguo
  • Wang, Zhanzhou
  • Cao, Lihua
  • Li, Bo
Type
Published Article
Journal
Polish Maritime Research
Publisher
De Gruyter Open
Publication Date
Nov 22, 2017
Volume
24
Issue
s1
Pages
23–27
Identifiers
DOI: 10.1515/pomr-2017-0100
Source
De Gruyter
Keywords
License
Green

Abstract

Based on basic equation and boundary layer theory of pneumodynamics, the thesis conducts numerical modeling and theoretical analysis on the last stage of turbine characteristics at a small volume flow by using FLUENT, gives an emphasized analysis on the position of first occurrence of backflow and its expansion direction and comes up with flow structure of the turbine flow field at last stage in the small volume flow condition. In connection with specific experiments, it puts forward the flow model of backflow occurring in the last stage field and the solution to the model. The flow field at last stage for a 100MW turbine in the small volume flow condition that is calculated by using the model is basically in conformity to the actual result.

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