Influence of Rotor Tip Blockage on Near Stall Blade Vibrations in an Axial Compressor Rig

被引：15

作者：

Moeller, Daniel ^{[1
]}

Juengst, Maximilian ^{[1
]}

Schiffer, Heinz-Peter ^{[1
]}

Giersch, Thomas ^{[2
]}

Heinichen, Frank ^{[2
]}

机构：

[1] Tech Univ Darmstadt, Inst Gas Turbines & Aerosp Prop, D-64287 Darmstadt, Germany

[2] Rolls Royce Deutschland, D-15827 Blankenfelde Mahlow, Germany

来源：

JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME | 2018年 / 140卷 / 02期

关键词：

INTEGRATED NONLINEAR APPROACH; FORCED RESPONSE PREDICTION;

D O I：

10.1115/1.4038316

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Rotor blade vibrations observed in the Darmstadt transonic compressor rig are investigated in this paper. The vibrations are nonsynchronous and occur in the near stall (NS) operating region. Rotor tip flow fluctuations traveling near the leading edge (LE) against the direction of rotation (in the rotor relative frame of reference) with about 50% blade tip speed are found to be the reason for the occurrence of the vibrations. The investigations show that the blockage at the rotor tip is an important factor for the aeroelastic stability of the compressor in the NS region. It is found that by application of a recirculating tip injection (TI) casing treatment, the aeroelastic stability increases as a result of reduced blockage in the rotor tip region.

引用

页数：12

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