naa a22 4500 510766412 CHVBK 20180411083158.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s11630-013-0603-4 doi (NATIONALLICENCE)springer-10.1007/s11630-013-0603-4 Flowfield and heat transfer past an unshrouded gas turbine blade tip with different shapes [Elektronische Daten] [Jian-Jun Liu, Peng Li, Chao Zhang, Bai-Tao An] This paper describes the numerical investigations of flow and heat transfer in an unshrouded turbine rotor blade of a heavy duty gas turbine with four tip configurations. By comparing the calculated contours of heat transfer coefficients on the flat tip of the HP turbine rotor blade in the GE-E3 aircraft engine with the corresponding experimental data, the κ-ω turbulence model was chosen for the present numerical simulations. The inlet and outlet boundary conditions for the turbine rotor blade are specified as the real gas turbine, which were obtained from the 3D full stage simulations. The rotor blade and the hub endwall are rotary and the casing is stationary. The influences of tip configurations on the tip leakage flow and blade tip heat transfer were discussed. It's showed that the different tip configurations changed the leakage flow patterns and the pressure distributions on the suction surface near the blade tip. Compared with the flat tip, the total pressure loss caused by the leakage flow was decreased for the full squealer tip and pressure side squealer tip, while increased for the suction side squealer tip. The suction side squealer tip results in the lowest averaged heat transfer coefficient on the blade tip compared to the other tip configurations. Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag Berlin Heidelberg, 2013 Turbine Rotor Blade nationallicence Squealer Blade Tip nationallicence Tip Leakage Flow nationallicence Aerodynamic Loss nationallicence Heat Transfer nationallicence Liu Jian-Jun Institute of Engineering Thermophysics, Chinese Academy of Sciences, P. O. Box 2706, 100190, Beijing, China aut Li Peng Institute of Engineering Thermophysics, Chinese Academy of Sciences, P. O. Box 2706, 100190, Beijing, China aut Zhang Chao Institute of Engineering Thermophysics, Chinese Academy of Sciences, P. O. Box 2706, 100190, Beijing, China aut An Bai-Tao Institute of Engineering Thermophysics, Chinese Academy of Sciences, P. O. Box 2706, 100190, Beijing, China aut Journal of Thermal Science SP Science Press 22/2(2013-04-01), 128-134 1003-2169 22:2<128 2013 22 11630 https://doi.org/10.1007/s11630-013-0603-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11630-013-0603-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Jian-Jun Institute of Engineering Thermophysics, Chinese Academy of Sciences, P. O. Box 2706, 100190, Beijing, China aut NATIONALLICENCE 700 1- Li Peng Institute of Engineering Thermophysics, Chinese Academy of Sciences, P. O. Box 2706, 100190, Beijing, China aut NATIONALLICENCE 700 1- Zhang Chao Institute of Engineering Thermophysics, Chinese Academy of Sciences, P. O. Box 2706, 100190, Beijing, China aut NATIONALLICENCE 700 1- An Bai-Tao Institute of Engineering Thermophysics, Chinese Academy of Sciences, P. O. Box 2706, 100190, Beijing, China aut NATIONALLICENCE 773 0- Journal of Thermal Science SP Science Press 22/2(2013-04-01), 128-134 1003-2169 22:2<128 2013 22 11630 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer