Numerical investigation of a HPT with different rotor tip configurations in terms of pressure ratio and efficiency

Silva, Lucilene Moraes da; Tomita, Jesuíno Takachi; Bringhenti, Cleverson

doi:10.1016/j.ast.2016.12.009

Cited by 18 publications

(2 citation statements)

References 7 publications

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“…As for the winglet, Coull 13 indicated that the winglet could change the TLF direction to decrease the aerodynamic loss. Silva 14 found that the winglet tip could improve the machine efficiency. Yaras 15 and Dey 16 all studied the inhibiting effect on the TLF of the winglet at the PS and the suction side (SS), respectively.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study of novel tip configurations in a turbine cascade

Jin

Song

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part A:

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Two novel tip modeling methods are proposed in this paper. One novel tip is established by the mathematical method and the other is generated by the B-spline surface. And the genetic algorithm, the orthogonal design and the Kriging model are applied to optimize two kinds of novel tips numerically. The optimal mathematical tip and the optimal B-spline tip are acquired respectively. The aerodynamic tests were investigated at the wind tunnel test section, including the flat tip, the squealer tip, the optimal mathematical tip and the optimal B-spline tip. The static pressure distributions on the casing and the blade surface were measured by the pressure taps. Meanwhile, the secondary flow and the loss were obtained by the five-hole probe at the exit section. A comparison of the simulation analysis results with the experimental results shows good agreement. Compared with the flat tip, the measured loss on the squealer tip, the optimal mathematical tip and the optimal B-spline tip is decreased by 7.2%, 10.5% and 12.6% respectively.

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Section: Introductionmentioning

confidence: 99%

Experimental and numerical study of novel tip configurations in a turbine cascade

Jin

Song

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part A:

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show abstract

“…In addition, the tip leakage flow was very weak due to strong vorticity in the recess cavity. Da Silva et al 19) numerically studied the influences of different rotor tip geometry configurations, including plane tip, winglet tip, squealer tip, and squealer-winglet tip, on turbine efficiency. It was indicated that the rotor equipped with the squealer-winglet tip configuration presents a better pressure ratio compromise.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cutbacks on Tip Leakage Flow and Film-Cooling Effectiveness of a Turbine Blade Tip under Relative Moving Condition

Cheng

Zhang

et al. 2021

Trans. Japan Soc. Aero. S Sci.

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Three-dimensional flow investigation of a high-pressure turbine with rotor tip desensitization based on Winglet geometry

Maia

Silva

Tomita

et al. 2022

J Braz. Soc. Mech. Sci. Eng.

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Numerical investigation of a HPT with different rotor tip configurations in terms of pressure ratio and efficiency

Cited by 18 publications

References 7 publications

Experimental and numerical study of novel tip configurations in a turbine cascade

Experimental and numerical study of novel tip configurations in a turbine cascade

Effect of Cutbacks on Tip Leakage Flow and Film-Cooling Effectiveness of a Turbine Blade Tip under Relative Moving Condition

Three-dimensional flow investigation of a high-pressure turbine with rotor tip desensitization based on Winglet geometry

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