A statistical model for the effect of casing treatment recesses on compressor rotor performance

Nezym, Vitaliy

doi:10.1016/j.expthermflusci.2006.12.005

Cited by 6 publications

(3 citation statements)

References 29 publications

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“…Many of them deal with the optimization of the labyrinth seal. [6][7][8][9][10] Wallis et al 11 tried to control the leakage flow in a turbine by using turning devices. Corsini et al 12,13 investigated the use of profiled endplates at the blade tip and succeeded in changing the orientation of the leakage flow structure.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of an actively controlled automotive cooling fan using steady air injection in the leakage gap

Azzam

Paridaens

Ravelet

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part A:

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International audiencen an axial fan, a leakage flow driven by a pressure gradient between the pressure side and the suction side occurs in the gap between the shroud and the casing. This leakage flow is in the opposite direction to the main flow and is responsible for significant energy dissipation. Therefore, many authors have worked to understand this phenomenon in order to reduce these inherent energy losses. Up to now, most of the studies reported in the literature have been passive solutions. In this paper, an experimental controlling strategy is suggested to reduce the leakage flow rate. To this end, a fan with hollow blades and a specific drive system were designed and built for air injection. Air is injected in the leakage gap at the fan periphery. The experiment was performed for three rotation speeds, five injection rates and two configurations: 16 and 32 injection holes on the fan's circumference. The experimental results of this investigation are presented in this articl

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Section: Introductionmentioning

confidence: 99%

“…Many of them deal with the optimization of the labyrinth seal. 6–10 Wallis et al. 11 tried to control the leakage flow in a turbine by using turning devices.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of an actively controlled automotive cooling fan using steady air injection in the leakage gap

Azzam

Paridaens

Ravelet

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part A:

View full text Add to dashboard Cite

show abstract

“…One of the most important properties of this coating is to accommodate incursions of the labyrinth teeth that might occur during turbo engine operation ( [4]). Indeed, a turbo engine is subjected to successive start and stop cycles, thermal expansions, vibrations, and mechanical loading creating undesirable rotorstator displacements leading to labyrinth seal interactions ( [5,6]). The coating abradability and the turbo engine operating environment imposes requirements in coating design that are the result of a compromise among various coating properties ( [7]).…”

Section: Introductionmentioning

confidence: 99%