Sand Transport in a Two Pass Internal Cooling Duct With Rib Turbulators

Singh, Sukhjinder; Reagle, C. J.; Delimont, Jacob; Tafti, Danesh K.; Ng, Wing; Ekkad, Srinath V.

doi:10.1115/ht2012-58100

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“…Results show that the passage walls of the array show the greatest potential for deposition. Singh and Tafti [15] studied sand particles transport in the two-pass stationary square ducts with rib of a turbine blade. It is found that the sand particles tend to follow the flow field very closely.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Particles Deposition in the U-bend Ribbed Passage

Liu

et al. 2020

Journal of Heat Transfer

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Sand particles accumulation in the internal cooling passage reduces cooling effectiveness of the turbine blades and even affects aviation safety. Discrete phase-CFD simulations of sand particles deposition was performed in the U-bend ribbed passage. The Euler-Lagrange method is used. Reynolds Average Navier-Stokes method was used for the gas phase calculation. The realizable k-e turbulence model and enhanced wall treatment were performed. The discrete phase was solved using Lagrangian with random walk model. A particle deposition model was implemented using user-defined functions. The Reynolds numbers of 30000, 23000 and 15500 were considered. Particles diameters in the range 1-20 microns were considered. The particles deposition distribution of different locations is obtained in present study and the influence of the Reynolds numbers and particle diameters on particles deposition performance is analyzed. Results show that the first row of ribs has a protective effect on the back row of ribs. The increased Reynolds number and increased particles diameter promote the deposition of particles on the wall.

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Section: Introductionmentioning

confidence: 99%

Numerical Study on Particles Deposition in the U-bend Ribbed Passage

Liu

et al. 2020

Journal of Heat Transfer

View full text Add to dashboard Cite

show abstract

Sand Transport in a Two Pass Internal Cooling Duct With Rib Turbulators

Cited by 1 publication

References 0 publications

Numerical Study on Particles Deposition in the U-bend Ribbed Passage

Numerical Study on Particles Deposition in the U-bend Ribbed Passage

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