Abstract
The present study investigates the effects of secondary flow due to angled rib turbulators on the heat/mass transfer in the square channels with channel rotation and bleed flow. The angle of attack of the angled ribs was 45°. The bleed holes were located between the rib turbulators on either the leading or trailing surface. The tests were conducted under the conditions corresponding to various bleed ratios (BR = 0.0, 0.2 and 0.4) and rotation numbers (Ro=0.0, 0.2 and 0.4) at Re= 10,000. The results suggest that the heat/mass transfer characteristics were influenced by the Coriolis force, the decrement of the main flow rate and the secondary flow. In the 90° angled ribbed channel, the heat/mass transfer reduced on the leading surface with an increment in the rotation number, but it increased on the trailing surface. However, it decreased on both surfaces in the 45° angled ribbed channel. As the bleed ratio increased, the Sherwood number ratios decreased on both the bleeding and non-bleeding surfaces for the 45° angled ribs, but increased on the bleeding surface for the 90° angled ribs.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the ASME Turbo Expo 2007 - Power for Land, Sea, and Air |
| Pages | 209-218 |
| Number of pages | 10 |
| DOIs | |
| Publication status | Published - 2007 Sep 24 |
| Event | 2007 ASME Turbo Expo - Montreal, Que., Canada Duration: 2007 May 14 → 2007 May 17 |
Publication series
| Name | Proceedings of the ASME Turbo Expo |
|---|---|
| Volume | 4 PART A |
Other
| Other | 2007 ASME Turbo Expo |
|---|---|
| Country | Canada |
| City | Montreal, Que. |
| Period | 07/5/14 → 07/5/17 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Engineering(all)
Cite this
}
Heat/mass transfer characteristics in angled ribbed channels with various bleed ratios and rotation numbers. / Kim, Kyung Min; Park, Suk Hwan; Jeon, Yun Heung; Lee, Dong Hyun; Cho, Hyung Hee.
Proceedings of the ASME Turbo Expo 2007 - Power for Land, Sea, and Air. 2007. p. 209-218 (Proceedings of the ASME Turbo Expo; Vol. 4 PART A).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Heat/mass transfer characteristics in angled ribbed channels with various bleed ratios and rotation numbers
AU - Kim, Kyung Min
AU - Park, Suk Hwan
AU - Jeon, Yun Heung
AU - Lee, Dong Hyun
AU - Cho, Hyung Hee
PY - 2007/9/24
Y1 - 2007/9/24
N2 - The present study investigates the effects of secondary flow due to angled rib turbulators on the heat/mass transfer in the square channels with channel rotation and bleed flow. The angle of attack of the angled ribs was 45°. The bleed holes were located between the rib turbulators on either the leading or trailing surface. The tests were conducted under the conditions corresponding to various bleed ratios (BR = 0.0, 0.2 and 0.4) and rotation numbers (Ro=0.0, 0.2 and 0.4) at Re= 10,000. The results suggest that the heat/mass transfer characteristics were influenced by the Coriolis force, the decrement of the main flow rate and the secondary flow. In the 90° angled ribbed channel, the heat/mass transfer reduced on the leading surface with an increment in the rotation number, but it increased on the trailing surface. However, it decreased on both surfaces in the 45° angled ribbed channel. As the bleed ratio increased, the Sherwood number ratios decreased on both the bleeding and non-bleeding surfaces for the 45° angled ribs, but increased on the bleeding surface for the 90° angled ribs.
AB - The present study investigates the effects of secondary flow due to angled rib turbulators on the heat/mass transfer in the square channels with channel rotation and bleed flow. The angle of attack of the angled ribs was 45°. The bleed holes were located between the rib turbulators on either the leading or trailing surface. The tests were conducted under the conditions corresponding to various bleed ratios (BR = 0.0, 0.2 and 0.4) and rotation numbers (Ro=0.0, 0.2 and 0.4) at Re= 10,000. The results suggest that the heat/mass transfer characteristics were influenced by the Coriolis force, the decrement of the main flow rate and the secondary flow. In the 90° angled ribbed channel, the heat/mass transfer reduced on the leading surface with an increment in the rotation number, but it increased on the trailing surface. However, it decreased on both surfaces in the 45° angled ribbed channel. As the bleed ratio increased, the Sherwood number ratios decreased on both the bleeding and non-bleeding surfaces for the 45° angled ribs, but increased on the bleeding surface for the 90° angled ribs.
UR - http://www.scopus.com/inward/record.url?scp=34548739607&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34548739607&partnerID=8YFLogxK
U2 - 10.1115/GT2007-27166
DO - 10.1115/GT2007-27166
M3 - Conference contribution
AN - SCOPUS:34548739607
SN - 079184790X
SN - 9780791847909
T3 - Proceedings of the ASME Turbo Expo
SP - 209
EP - 218
BT - Proceedings of the ASME Turbo Expo 2007 - Power for Land, Sea, and Air
ER -