TY - JOUR
T1 - Effect of the installation of a cutting pin in front of a cylindrical rod on the endwall flow and heat transfer distribution
AU - Choi, Seok Min
AU - Kim, Su Won
AU - Park, Hee Seung
AU - Cho, Hyung Hee
N1 - Publisher Copyright:
© 2020 The Korean Society of Mechanical Engineers
PY - 2020
Y1 - 2020
N2 - The effect of the installation of a cutting pin in front of a cylindrical rod was analyzed. Different cutting pin heights were compared through numerical simulations. The numerical simulations were conducted using ANSYS CFX (Ver. 17.2). The cutting pin heights were hp/H = 0.25, 0.5, and 0.75. The results revealed that the cutting pin with hp/H = 0.25 increased the strength of the horseshoe vortex, which occurred at the leading edge of the cylindrical rod. Therefore, the heat transfer distributions between the cutting pin and the cylindrical rod increased. Moreover, the area-averaged heat transfer distributions increased to up to a factor of 22 % when the cutting pin was installed. Therefore, choosing an appropriate height for the cutting pin will be helpful when it is installed in front of the pin-fin array of the internal passage of a gas turbine blade.
AB - The effect of the installation of a cutting pin in front of a cylindrical rod was analyzed. Different cutting pin heights were compared through numerical simulations. The numerical simulations were conducted using ANSYS CFX (Ver. 17.2). The cutting pin heights were hp/H = 0.25, 0.5, and 0.75. The results revealed that the cutting pin with hp/H = 0.25 increased the strength of the horseshoe vortex, which occurred at the leading edge of the cylindrical rod. Therefore, the heat transfer distributions between the cutting pin and the cylindrical rod increased. Moreover, the area-averaged heat transfer distributions increased to up to a factor of 22 % when the cutting pin was installed. Therefore, choosing an appropriate height for the cutting pin will be helpful when it is installed in front of the pin-fin array of the internal passage of a gas turbine blade.
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U2 - 10.3795/KSME-B.2020.44.11.695
DO - 10.3795/KSME-B.2020.44.11.695
M3 - Article
AN - SCOPUS:85102308185
SN - 1226-4881
VL - 44
SP - 695
EP - 701
JO - Transactions of the Korean Society of Mechanical Engineers, B
JF - Transactions of the Korean Society of Mechanical Engineers, B
IS - 11
ER -