Experimental and numerical investigation of outlet guide vane and endwall heat transfer with various inlet flow angles
(2016) In International Journal of Heat and Mass Transfer 95. p.355-367- Abstract
This paper investigates the heat transfer on the outlet guide vane (OGV) surface and its endwall region. The Reynolds number is fixed at 300,000 and the flow is subsonic. The inlet flow angle is varied from +25°(on-design), to +40°and -25°(off-design). Experiments were conducted in a linear cascade test facility using thermochromic liquid crystal technique. Numerical simulations using RANS were carried out with three turbulence models, i.e., standard k-ω model (k-ω), baseline k-ω model (BSL), and shear stress transport k-ω model (SST). Both the experimental and numerical results are provided and compared. On the OGV surface, boundary layer transition and separation affect the heat transfer significantly and they vary with the inlet flow... (More)
This paper investigates the heat transfer on the outlet guide vane (OGV) surface and its endwall region. The Reynolds number is fixed at 300,000 and the flow is subsonic. The inlet flow angle is varied from +25°(on-design), to +40°and -25°(off-design). Experiments were conducted in a linear cascade test facility using thermochromic liquid crystal technique. Numerical simulations using RANS were carried out with three turbulence models, i.e., standard k-ω model (k-ω), baseline k-ω model (BSL), and shear stress transport k-ω model (SST). Both the experimental and numerical results are provided and compared. On the OGV surface, boundary layer transition and separation affect the heat transfer significantly and they vary with the inlet flow angle. The abilities of the three models to predict these heat transfer behaviors are revealed. For the on-design case, both BSL and SST models capture the main feature of the heat transfer variations due to transition, but the k-ω model fails. For off-design cases where separation occurs, there are discrepancies found between the calculations and experimental data. On the endwall region, the effects of a horseshoe vortex (HV) on the heat transfer are clearly noticed at the leading edge (LE). The three models perform well to simulate the pitchwise averaged Nusselt number while they always over-predict the strength and size of the HV, which leads to higher heat transfer there compared to the measurements. For off-design conditions, the HV becomes more energetic than that of the on-design condition and the pressure side leg departs from the OGV at the inlet flow angle α = -25°.
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- author
- Wang, Chenglong LU ; Luo, Lei ; Wang, Lei LU ; Sundén, Bengt LU ; Chernoray, Valery ; Arroyo, Carlos and Abrahamsson, Hans
- organization
- publishing date
- 2016-04
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Endwall, Heat transfer measurements, Numerical simulations, Outlet guide vane
- in
- International Journal of Heat and Mass Transfer
- volume
- 95
- pages
- 13 pages
- publisher
- Pergamon Press Ltd.
- external identifiers
-
- scopus:84951273499
- ISSN
- 0017-9310
- DOI
- 10.1016/j.ijheatmasstransfer.2015.11.029
- language
- English
- LU publication?
- yes
- additional info
- Funding Information: The current research is financially supported by the Swedish research program TURBO POWER, the Swedish National Energy Agency, and the China Scholarship Council (CSC), which are gratefully acknowledged.
- id
- d9bf2b82-36c8-43be-b1a3-c77cea335730
- date added to LUP
- 2022-03-29 09:26:58
- date last changed
- 2023-03-06 15:32:38
@article{d9bf2b82-36c8-43be-b1a3-c77cea335730,
abstract = {{<p>This paper investigates the heat transfer on the outlet guide vane (OGV) surface and its endwall region. The Reynolds number is fixed at 300,000 and the flow is subsonic. The inlet flow angle is varied from +25°(on-design), to +40°and -25°(off-design). Experiments were conducted in a linear cascade test facility using thermochromic liquid crystal technique. Numerical simulations using RANS were carried out with three turbulence models, i.e., standard k-ω model (k-ω), baseline k-ω model (BSL), and shear stress transport k-ω model (SST). Both the experimental and numerical results are provided and compared. On the OGV surface, boundary layer transition and separation affect the heat transfer significantly and they vary with the inlet flow angle. The abilities of the three models to predict these heat transfer behaviors are revealed. For the on-design case, both BSL and SST models capture the main feature of the heat transfer variations due to transition, but the k-ω model fails. For off-design cases where separation occurs, there are discrepancies found between the calculations and experimental data. On the endwall region, the effects of a horseshoe vortex (HV) on the heat transfer are clearly noticed at the leading edge (LE). The three models perform well to simulate the pitchwise averaged Nusselt number while they always over-predict the strength and size of the HV, which leads to higher heat transfer there compared to the measurements. For off-design conditions, the HV becomes more energetic than that of the on-design condition and the pressure side leg departs from the OGV at the inlet flow angle α = -25°.</p>}},
author = {{Wang, Chenglong and Luo, Lei and Wang, Lei and Sundén, Bengt and Chernoray, Valery and Arroyo, Carlos and Abrahamsson, Hans}},
issn = {{0017-9310}},
keywords = {{Endwall; Heat transfer measurements; Numerical simulations; Outlet guide vane}},
language = {{eng}},
pages = {{355--367}},
publisher = {{Pergamon Press Ltd.}},
series = {{International Journal of Heat and Mass Transfer}},
title = {{Experimental and numerical investigation of outlet guide vane and endwall heat transfer with various inlet flow angles}},
url = {{http://dx.doi.org/10.1016/j.ijheatmasstransfer.2015.11.029}},
doi = {{10.1016/j.ijheatmasstransfer.2015.11.029}},
volume = {{95}},
year = {{2016}},
}