TY - JOUR
T1 - A study on the heat flow characteristics of corrugated structure for array jet impingement cooling
AU - Park, Chul
AU - Kim, Seon Ho
AU - Sohn, Ho Seong
AU - Kim, Jeong Ju
AU - Jung, Eui Yeop
AU - Choi, Seok Min
AU - Cho, Hyung Hee
N1 - Publisher Copyright:
2019 The Korean Society of Mechanical Engineers
PY - 2019
Y1 - 2019
N2 - Array impinging jets have been applied to combustors, vanes and blades of gas turbines that require high cooling performance. However, the jet is deflected toward the downstream direction owing to the influence of the crossflow, which decreases the cooling performance. In this study, a corrugated structure is proposed to increase the space between the jet holes by securing the space for the spent air. The average Reynolds number of each jet hole is 10,000 and numerical simulations are conducted by ANSYS-CFX 17.2. The modified corrugated structure that has an additional plate-making secondary channel for the spent air shows a higher Nusselt number than the corrugated structure. Furthermore, a greater distance of impinging and jet plate (h/d) shows a higher Nusselt number at the stagnation region owing to the development of the jet flow. Therefore, the modified corrugated structure with a smaller distance of impinging and jet plate (h/d) shows greater heat transfer than the corrugated structure.
AB - Array impinging jets have been applied to combustors, vanes and blades of gas turbines that require high cooling performance. However, the jet is deflected toward the downstream direction owing to the influence of the crossflow, which decreases the cooling performance. In this study, a corrugated structure is proposed to increase the space between the jet holes by securing the space for the spent air. The average Reynolds number of each jet hole is 10,000 and numerical simulations are conducted by ANSYS-CFX 17.2. The modified corrugated structure that has an additional plate-making secondary channel for the spent air shows a higher Nusselt number than the corrugated structure. Furthermore, a greater distance of impinging and jet plate (h/d) shows a higher Nusselt number at the stagnation region owing to the development of the jet flow. Therefore, the modified corrugated structure with a smaller distance of impinging and jet plate (h/d) shows greater heat transfer than the corrugated structure.
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U2 - 10.3795/KSME-B.2019.43.4.297
DO - 10.3795/KSME-B.2019.43.4.297
M3 - Article
AN - SCOPUS:85069671793
SN - 1226-4881
VL - 43
SP - 297
EP - 305
JO - Transactions of the Korean Society of Mechanical Engineers, B
JF - Transactions of the Korean Society of Mechanical Engineers, B
IS - 4
ER -