2011
DOI: 10.1007/s11630-011-0474-5
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Numerical investigations on the steady and unsteady leakage flow and heat transfer characteristics of rotor blade squealer tip

Abstract: The steady and unsteady leakage flow and heat transfer characteristics of the rotor blade squealer tip were conducted by solving Reynolds-Averaged Navier-Stokes (RANS) equations with k-ω turbulence model. The first stage of GE-E3 engine with squealer tip in the rotor was adopted to perform this work. The tip clearance was set to be 1% of the rotor blade height and the groove depth was specified as 2% of the span. The results showed that there were two vortexes in the tip gap which determined the local heat tra… Show more

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Cited by 9 publications
(2 citation statements)
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“…Yang et al (2010) numerically studied the effect of rotation on tip leakage flow and heat transfer, and considered that the relative motion of the shroud was the main factor. In addition, Li et al (2011) also conducted steady and unsteady numerical analysis on the leakage flow and heat transfer characteristics at the tip of the rotor blade. It is considered that there are two vortices in the tip clearance, and these two vortices have a certain influence on the local heat transfer characteristics of tip clearance.…”
Section: Introductionmentioning
confidence: 99%
“…Yang et al (2010) numerically studied the effect of rotation on tip leakage flow and heat transfer, and considered that the relative motion of the shroud was the main factor. In addition, Li et al (2011) also conducted steady and unsteady numerical analysis on the leakage flow and heat transfer characteristics at the tip of the rotor blade. It is considered that there are two vortices in the tip clearance, and these two vortices have a certain influence on the local heat transfer characteristics of tip clearance.…”
Section: Introductionmentioning
confidence: 99%
“…Li et al. 16 studied the unsteady tip leakage flow and heat transfer in a turbine blade with cavity tip by numerical calculations. The results showed that the pressure field and leakage flow fluctuate under the interaction of upstream vane wake and blade.…”
Section: Introductionmentioning
confidence: 99%