Abstract
This study aimed to improve the thermal performance of matrix channels used for the internal cooling of gas turbine blades. Two types of ribs were installed on the leading and trailing surfaces in the channel with a constant height. Numerical analyses were carried out for the vertical and inclined ribs, and the Reynolds number was fixed at 10,500. In the case of vertical rib, the swirl flow was not enhanced, and the flow was disturbed. As a result, the pressure drop increased considerably, and the thermal performance decreased. However, in the case of the inclined rib, the swirl flow was strengthened by the secondary flow. As a result, a hight heat transfer distribution was observed at the back of the rib. Futhermore, the thermal performance improved significantly compared to that of the matrix channel without a rib.
| Original language | English |
|---|---|
| Pages (from-to) | 329-337 |
| Number of pages | 9 |
| Journal | Transactions of the Korean Society of Mechanical Engineers, B |
| Volume | 43 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2019 Jan 1 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Mechanical Engineering
Cite this
}
Numerical analysis on the shape of ribs for enhancing heat transfer in matrix channel. / Lee, Hyoung Min; Choi, Seok Min; Bang, Minho; Kim, Taehyun; Joo, Won-Gu; Cho, Hyung Hee.
In: Transactions of the Korean Society of Mechanical Engineers, B, Vol. 43, No. 5, 01.01.2019, p. 329-337.Research output: Contribution to journal › Article
TY - JOUR
T1 - Numerical analysis on the shape of ribs for enhancing heat transfer in matrix channel
AU - Lee, Hyoung Min
AU - Choi, Seok Min
AU - Bang, Minho
AU - Kim, Taehyun
AU - Joo, Won-Gu
AU - Cho, Hyung Hee
PY - 2019/1/1
Y1 - 2019/1/1
N2 - This study aimed to improve the thermal performance of matrix channels used for the internal cooling of gas turbine blades. Two types of ribs were installed on the leading and trailing surfaces in the channel with a constant height. Numerical analyses were carried out for the vertical and inclined ribs, and the Reynolds number was fixed at 10,500. In the case of vertical rib, the swirl flow was not enhanced, and the flow was disturbed. As a result, the pressure drop increased considerably, and the thermal performance decreased. However, in the case of the inclined rib, the swirl flow was strengthened by the secondary flow. As a result, a hight heat transfer distribution was observed at the back of the rib. Futhermore, the thermal performance improved significantly compared to that of the matrix channel without a rib.
AB - This study aimed to improve the thermal performance of matrix channels used for the internal cooling of gas turbine blades. Two types of ribs were installed on the leading and trailing surfaces in the channel with a constant height. Numerical analyses were carried out for the vertical and inclined ribs, and the Reynolds number was fixed at 10,500. In the case of vertical rib, the swirl flow was not enhanced, and the flow was disturbed. As a result, the pressure drop increased considerably, and the thermal performance decreased. However, in the case of the inclined rib, the swirl flow was strengthened by the secondary flow. As a result, a hight heat transfer distribution was observed at the back of the rib. Futhermore, the thermal performance improved significantly compared to that of the matrix channel without a rib.
UR - http://www.scopus.com/inward/record.url?scp=85069685377&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85069685377&partnerID=8YFLogxK
U2 - 10.3795/KSME-B.2019.43.5.329
DO - 10.3795/KSME-B.2019.43.5.329
M3 - Article
VL - 43
SP - 329
EP - 337
JO - Transactions of the Korean Society of Mechanical Engineers, B
JF - Transactions of the Korean Society of Mechanical Engineers, B
SN - 1226-4881
IS - 5
ER -