Numerical investigation of the casing treatment mechanism with a single circumferential groove

Shi, Ke; Chen, Haixin; Fu, Song

doi:10.1007/s11433-013-5003-y

Cited by 9 publications

(3 citation statements)

References 24 publications

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“…The width of each groove is approximately equal to its depth. The dimension of the casing grooves refers to the previous research [24,25]. A few CFD tests, which are not provided in this paper, were also carried out to ensure the rationality of the parameter selection.…”

Section: Of 25mentioning

confidence: 99%

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Design and Optimization of Multiple Circumferential Casing Grooves Distribution Considering Sweep and Lean Variations on the Blade Tip

2018

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This paper focuses on the design and optimization of the axial distribution of the circumferential groove casing treatment (CGCT). Effects of the axial location of multiple casing grooves on the flow structures are numerically studied. Sweep and lean variations are then introduced to the blade tip, and their influences on the grooves are discussed. The results show that the ability of the CGCT to relieve the blockage varies with the distribution of grooves, and the three-dimensional blading affects the performance of both the blade and the CGCT. Accordingly, a multi-objective optimization combining the CGCT design with the sweep and lean design is conducted. Objectives, including the total pressure ratio and the adiabatic efficiency, are set at the design point; meanwhile, the choking mass flow and the near-stall performance are constrained. The coupling between the CGCT and the blade is improved, which contributes to an optimal design point performance and a sufficient stall margin. The sweep and lean in the tip redistribute the spanwise and chordwise loading, which enhances the ability of the CGCT to improve the blade's performance. This work shows that the present CGCT-blade integrated optimization is a practical engineering strategy to develop the working capacity and efficiency of a compressor blade while achieving the stall margin extension.

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Section: Of 25mentioning

confidence: 99%

“…The ND-TAC rotor is tip-critical and it exhibits a spike-type stall behavior [23]. The application of a CGCT to enhance the stability of the ND-TAC [24,25] has demonstrated the effectiveness of CGCTs in this rotor. However, the variation of the design point performance resulting from CGCT was not discussed, or of concern.…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of Multiple Circumferential Casing Grooves Distribution Considering Sweep and Lean Variations on the Blade Tip

2018

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“…The results revealed that the working range had been increased for all three compressor rotors and the stall occurred due to shock vortex interaction. The influence of a single groove casing is investigated by Shi et al [6]. The results explained that a single groove plays an important role close to the LE of the rotor blade and the groove stabilized the flow close to stall limit and increased the stall margin of the compressor.…”

Section: Introductionmentioning

confidence: 99%

CFD Investigation of an Axial Compressor with Casing Treatment for the Enhancement of the Stall Margin

et al. 2021

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Casing treatment is an efficient technique which is used to increase the compressor stall margin with a minor reduction in the efficiency. The interaction between the blade passage and the groove is the main cause of the stall margin improvement by various researches. A numerical study is conducted on a single circumferential casing groove using NASA rotor 37 in the current study. The performance of the two circumferential groove models is studied by discretizing RANS 3D equations using a finite volume technique. The inception of the stall is predicted according to the criteria of convergence. Two models of the circumferential groove have been suggested and numerically tested. A single passage simulation is selected for the two models. The performance of the smooth casing and the two models are analyzed. Moreover, the stall margin, total pressure ratio and peak adiabatic efficiency of the normal casing, and the two models are analyzed to determine the influence of the groove on the axial compressor performance and stability. Models 1 and 2 stall margins are enhanced by 6.62 % and 4.45% respectively. The adiabatic efficiency of model 1 and model 2 are decreased by 0.79 % and 1.08 % respectively.

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Preface to the special topic on fluid mechanic

Wu¹

2013

Sci. China Phys. Mech. Astron.

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Numerical investigation of the casing treatment mechanism with a single circumferential groove

Cited by 9 publications

References 24 publications

Design and Optimization of Multiple Circumferential Casing Grooves Distribution Considering Sweep and Lean Variations on the Blade Tip

Design and Optimization of Multiple Circumferential Casing Grooves Distribution Considering Sweep and Lean Variations on the Blade Tip

CFD Investigation of an Axial Compressor with Casing Treatment for the Enhancement of the Stall Margin

Preface to the special topic on fluid mechanic

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