Numerical and experimental study of the slot film cooling jet with various angles
(2003) ASME Summer Heat Transfer Conference (HT2003), 2003 2003. p.845-856- Abstract
- Numerical simulations coupled with LDV experiments were carried out to investigate a slot jet issued into a cross flow, which is relevant in the film cooling of gas turbine combustors. The film cooling fluid injection from slots or holes into a cross-flow produces highly complicated flow fields. In this paper, the time-averaged Navier-Stokes equations were solved on a collocated body-fitted grid system with the V2F turbulence model. The fluid flow and turbulent Reynolds stress fields were compared with the LDV experiments for three jet angles, namely, 30-deg, 60-deg, and 90-deg, and the jet blowing ratio is ranging from 2 to 9. Good agreement was obtained. Therefore, the present solution procedure was also adopted to calculations of 15-deg... (More)
- Numerical simulations coupled with LDV experiments were carried out to investigate a slot jet issued into a cross flow, which is relevant in the film cooling of gas turbine combustors. The film cooling fluid injection from slots or holes into a cross-flow produces highly complicated flow fields. In this paper, the time-averaged Navier-Stokes equations were solved on a collocated body-fitted grid system with the V2F turbulence model. The fluid flow and turbulent Reynolds stress fields were compared with the LDV experiments for three jet angles, namely, 30-deg, 60-deg, and 90-deg, and the jet blowing ratio is ranging from 2 to 9. Good agreement was obtained. Therefore, the present solution procedure was also adopted to calculations of 15-deg and 40-deg jets. In addition, the temperature fields, which were difficult to measure by experimental methods, were also computed with a simple eddy diffusivity model to obtain the film cooling effectiveness which was used for evaluation of the various jet-cross-flow arrangements. The results show that a recirculation bubble downstream the jet exists for jet angles larger than 40-deg, but it vanishes when the angle is less than 30-deg, which is in good accordance with the experiments. The blowing ratio has a large effect on the size of the recirculation bubble, and consequently on the film cooling effectiveness. In addition, the influence of boundary conditions for the jet and cross-flow are also addressed in the paper. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/612412
- author
- Jia, Rongguang LU ; Sundén, Bengt LU ; Miron, Petre and Leger, Bruno
- organization
- publishing date
- 2003
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Slot film cooling, Recirculation bubbles
- host publication
- Proceedings of the ASME Summer Heat Transfer Conference
- volume
- 2003
- pages
- 845 - 856
- publisher
- American Society Of Mechanical Engineers (ASME)
- conference name
- ASME Summer Heat Transfer Conference (HT2003), 2003
- conference location
- Las Vegas, NV, United States
- conference dates
- 2003-07-21 - 2003-07-23
- external identifiers
-
- scopus:1842640018
- ISBN
- 0791836959
- language
- English
- LU publication?
- yes
- id
- 360b8e01-9029-4ba1-a3a5-d93ebccc5d6b (old id 612412)
- date added to LUP
- 2016-04-04 12:03:57
- date last changed
- 2022-01-29 22:52:36
@inproceedings{360b8e01-9029-4ba1-a3a5-d93ebccc5d6b,
abstract = {{Numerical simulations coupled with LDV experiments were carried out to investigate a slot jet issued into a cross flow, which is relevant in the film cooling of gas turbine combustors. The film cooling fluid injection from slots or holes into a cross-flow produces highly complicated flow fields. In this paper, the time-averaged Navier-Stokes equations were solved on a collocated body-fitted grid system with the V2F turbulence model. The fluid flow and turbulent Reynolds stress fields were compared with the LDV experiments for three jet angles, namely, 30-deg, 60-deg, and 90-deg, and the jet blowing ratio is ranging from 2 to 9. Good agreement was obtained. Therefore, the present solution procedure was also adopted to calculations of 15-deg and 40-deg jets. In addition, the temperature fields, which were difficult to measure by experimental methods, were also computed with a simple eddy diffusivity model to obtain the film cooling effectiveness which was used for evaluation of the various jet-cross-flow arrangements. The results show that a recirculation bubble downstream the jet exists for jet angles larger than 40-deg, but it vanishes when the angle is less than 30-deg, which is in good accordance with the experiments. The blowing ratio has a large effect on the size of the recirculation bubble, and consequently on the film cooling effectiveness. In addition, the influence of boundary conditions for the jet and cross-flow are also addressed in the paper.}},
author = {{Jia, Rongguang and Sundén, Bengt and Miron, Petre and Leger, Bruno}},
booktitle = {{Proceedings of the ASME Summer Heat Transfer Conference}},
isbn = {{0791836959}},
keywords = {{Slot film cooling; Recirculation bubbles}},
language = {{eng}},
pages = {{845--856}},
publisher = {{American Society Of Mechanical Engineers (ASME)}},
title = {{Numerical and experimental study of the slot film cooling jet with various angles}},
volume = {{2003}},
year = {{2003}},
}