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A reduced-order through-flow program for choked and cooled axial turbines

Genrup, Magnus LU ; Engdar, Ulf LU ; Sigfrid, Ivan LU and Assadi, Mohsen LU (2005) ASME Turbo Expo 2005 - Gas Turbie Technology: Focus for the Future In Proceedings of the ASME Turbo Expo 6 PART B. p.1161-1168
Abstract
A reduced-order through-flow program has been developed at the Lund Institute of Technology. The goal of the work was to develop and verify a program suitable for scientific studies of coaxial turbines. The program has built-in capability for multiple choked stages, and turbine cooling, as well as flexible modules for state, losses, deviation, and blockage. The code uses Matlab [trademark] as a platform for numerics, pre- and post-processing. The turbine modules are available from the Institute free of charge for scientific use. Matlab is a commercially available mathematical package and is used as a numerical tool by many universities and companies. Today, several codes are available for turbine analysis at different levels. Most of the... (More)
A reduced-order through-flow program has been developed at the Lund Institute of Technology. The goal of the work was to develop and verify a program suitable for scientific studies of coaxial turbines. The program has built-in capability for multiple choked stages, and turbine cooling, as well as flexible modules for state, losses, deviation, and blockage. The code uses Matlab [trademark] as a platform for numerics, pre- and post-processing. The turbine modules are available from the Institute free of charge for scientific use. Matlab is a commercially available mathematical package and is used as a numerical tool by many universities and companies. Today, several codes are available for turbine analysis at different levels. Most of the codes are proprietary and not available outside the companies that have developed them. There are, however, commercially available codes, but the user does not normally have accesses to the source code. This poses serious problems when such codes are used for scientific studies, and open easily modified code is indeed a desirable feature. The present paper describes in detail the calculation methods used to simulate performance of a cooled and choked turbine at off-design conditions. The algorithms necessary for finding the turbine choke point will, for example, be described in detail. The way in which the loss, deviation (including secondary and tip clearance), and blockage are included in a quasi 1-D calculation environment is also presented. The code is suitable for further development (e.g. streamline curvature through-flow), since it is based on modules for e.g. state, combustion, loss, deviation, diffuser, numerics, and in and output data processing. It is fairly easy to transform the Matlab program into e.g. Fortran. However, the use of the original platform simplifies plotting of turbine characteristics, velocity triangles, etc. The program is validated against test-rig data from an industrial two-stage power turbine. Copyright (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Coaxial turbines, Turbine cooling, Matlab
in
Proceedings of the ASME Turbo Expo
volume
6 PART B
pages
1161 - 1168
publisher
American Society Of Mechanical Engineers (ASME)
conference name
ASME Turbo Expo 2005 - Gas Turbie Technology: Focus for the Future
external identifiers
  • WOS:000242493400108
  • Scopus:27744510684
language
English
LU publication?
yes
id
a755fe55-5925-4248-9e6a-0a36baf1e81b (old id 615426)
alternative location
http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1585430
date added to LUP
2007-11-25 10:46:28
date last changed
2016-10-13 04:49:41
@misc{a755fe55-5925-4248-9e6a-0a36baf1e81b,
  abstract     = {A reduced-order through-flow program has been developed at the Lund Institute of Technology. The goal of the work was to develop and verify a program suitable for scientific studies of coaxial turbines. The program has built-in capability for multiple choked stages, and turbine cooling, as well as flexible modules for state, losses, deviation, and blockage. The code uses Matlab [trademark] as a platform for numerics, pre- and post-processing. The turbine modules are available from the Institute free of charge for scientific use. Matlab is a commercially available mathematical package and is used as a numerical tool by many universities and companies. Today, several codes are available for turbine analysis at different levels. Most of the codes are proprietary and not available outside the companies that have developed them. There are, however, commercially available codes, but the user does not normally have accesses to the source code. This poses serious problems when such codes are used for scientific studies, and open easily modified code is indeed a desirable feature. The present paper describes in detail the calculation methods used to simulate performance of a cooled and choked turbine at off-design conditions. The algorithms necessary for finding the turbine choke point will, for example, be described in detail. The way in which the loss, deviation (including secondary and tip clearance), and blockage are included in a quasi 1-D calculation environment is also presented. The code is suitable for further development (e.g. streamline curvature through-flow), since it is based on modules for e.g. state, combustion, loss, deviation, diffuser, numerics, and in and output data processing. It is fairly easy to transform the Matlab program into e.g. Fortran. However, the use of the original platform simplifies plotting of turbine characteristics, velocity triangles, etc. The program is validated against test-rig data from an industrial two-stage power turbine. Copyright},
  author       = {Genrup, Magnus and Engdar, Ulf and Sigfrid, Ivan and Assadi, Mohsen},
  keyword      = {Coaxial turbines,Turbine cooling,Matlab},
  language     = {eng},
  pages        = {1161--1168},
  publisher    = {ARRAY(0xa6eae58)},
  series       = {Proceedings of the ASME Turbo Expo},
  title        = {A reduced-order through-flow program for choked and cooled axial turbines},
  volume       = {6 PART B},
  year         = {2005},
}