A one-dimensional stage un-stacking approach to reveal flow angles and speeds in a multistage axial compressor at the design operating point
Stage stacking methods commonly use a one-dimensional (1D) through flow analysis at the mean line to design individual axial compressor stages and stack these to form a multistage axial compressor. This phase of design exerts a great influence on each stage's pressure and temperature ratio. The...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2019
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| Online Access: | https://hdl.handle.net/10356/90003 http://hdl.handle.net/10220/49888 |
| _version_ | 1811681101609959424 |
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| author | Koh, Alan Fu Hai Ng, Eddie Yin Kwee |
| author2 | Energy Research Institute @ NTU (ERI@N) |
| author_facet | Energy Research Institute @ NTU (ERI@N) Koh, Alan Fu Hai Ng, Eddie Yin Kwee |
| author_sort | Koh, Alan Fu Hai |
| collection | NTU |
| description | Stage stacking methods commonly use a one-dimensional (1D) through flow analysis at the mean line to design individual axial compressor stages and stack these to form a multistage axial compressor. This phase of design exerts a great influence on each stage's pressure and temperature ratio. The design process for an individual stage is usually guided by design values and rules developed in previous designs. This study develops a 1D stage un-stacking method (SUSM), which uses a minimal set of data from an actual axial compressor, while reducing the needed number of assumptions. Proceeding from the premise that an actual axial compressor design fulfills all thermodynamic requirements, velocity triangle requirements and design guidelines simultaneously, this proposed SUSM calculates the pressure, temperature, velocities and flow angles as a set of dependent data at each stage of the axial compressor. In approximating a possible axial compressor design for the LM2500 gas turbine that achieves the known pressure ratio distribution, the suggested stage loading coefficient (SLC) distribution is more appropriately considered an initial well-informed estimate and further improvements to this SUSM are needed to infer the actual SLC distributions used. |
| first_indexed | 2024-10-01T03:35:36Z |
| format | Journal Article |
| id | ntu-10356/90003 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:35:36Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/900032023-03-04T17:24:51Z A one-dimensional stage un-stacking approach to reveal flow angles and speeds in a multistage axial compressor at the design operating point Koh, Alan Fu Hai Ng, Eddie Yin Kwee Energy Research Institute @ NTU (ERI@N) Multistage Axial Compressor Velocity Triangle Engineering::Mechanical engineering Stage stacking methods commonly use a one-dimensional (1D) through flow analysis at the mean line to design individual axial compressor stages and stack these to form a multistage axial compressor. This phase of design exerts a great influence on each stage's pressure and temperature ratio. The design process for an individual stage is usually guided by design values and rules developed in previous designs. This study develops a 1D stage un-stacking method (SUSM), which uses a minimal set of data from an actual axial compressor, while reducing the needed number of assumptions. Proceeding from the premise that an actual axial compressor design fulfills all thermodynamic requirements, velocity triangle requirements and design guidelines simultaneously, this proposed SUSM calculates the pressure, temperature, velocities and flow angles as a set of dependent data at each stage of the axial compressor. In approximating a possible axial compressor design for the LM2500 gas turbine that achieves the known pressure ratio distribution, the suggested stage loading coefficient (SLC) distribution is more appropriately considered an initial well-informed estimate and further improvements to this SUSM are needed to infer the actual SLC distributions used. EDB (Economic Devt. Board, S’pore) Accepted version 2019-09-06T07:54:07Z 2019-12-06T17:38:29Z 2019-09-06T07:54:07Z 2019-12-06T17:38:29Z 2019 Journal Article Koh, A. F. H. & Ng, E. Y. K. (2019). A one-dimensional stage un-stacking approach to reveal flow angles and speeds in a multistage axial compressor at the design operating point. Mechanics & Industry, 20(1), 107-. doi:10.1051/meca/2019004 2257-7750 https://hdl.handle.net/10356/90003 http://hdl.handle.net/10220/49888 10.1051/meca/2019004 en Mechanics & Industry © 2019 Cambridge University Press (CUP). All rights reserved. This paper was published in Mechanics & Industry and is made available with permission of Cambridge University Press (CUP). 28 p. application/pdf |
| spellingShingle | Multistage Axial Compressor Velocity Triangle Engineering::Mechanical engineering Koh, Alan Fu Hai Ng, Eddie Yin Kwee A one-dimensional stage un-stacking approach to reveal flow angles and speeds in a multistage axial compressor at the design operating point |
| title | A one-dimensional stage un-stacking approach to reveal flow angles and speeds in a multistage axial compressor at the design operating point |
| title_full | A one-dimensional stage un-stacking approach to reveal flow angles and speeds in a multistage axial compressor at the design operating point |
| title_fullStr | A one-dimensional stage un-stacking approach to reveal flow angles and speeds in a multistage axial compressor at the design operating point |
| title_full_unstemmed | A one-dimensional stage un-stacking approach to reveal flow angles and speeds in a multistage axial compressor at the design operating point |
| title_short | A one-dimensional stage un-stacking approach to reveal flow angles and speeds in a multistage axial compressor at the design operating point |
| title_sort | one dimensional stage un stacking approach to reveal flow angles and speeds in a multistage axial compressor at the design operating point |
| topic | Multistage Axial Compressor Velocity Triangle Engineering::Mechanical engineering |
| url | https://hdl.handle.net/10356/90003 http://hdl.handle.net/10220/49888 |
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