Study on the performance of a centrifugal compressor considering running tip clearance

被引：16

作者：

Kim, Changhee ^{[1
]}

Lee, Horim ^{[2
]}

Yang, Jangsik ^{[1
]}

Son, Changmin ^{[1
]}

Hwang, Yoonjei ^{[2
]}

机构：

[1] Pusan Natl Univ, Sch Mech Engn, Pusan 609735, South Korea

[2] LG Elect, Chiller R&D, Jeonbuk, South Korea

来源：

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2016年 / 65卷

关键词：

Centrifugal compressor; Tip clearance; Fluid-structure; Interaction; Impeller deformation; IMPELLER;

D O I：

10.1016/j.ijrefrig.2015.11.008

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A series of aero-thermo-mechanical analyses were carried out to predict the running tip clearance and the effects of impeller deformation on the performance using two different centrifugal compressors (blade type A and B). In operation, impeller deformation due to the combination of centrifugal force, aerodynamic pressure and thermal load results in nonuniform tip clearance profile. The results show that the maximum displacement occurs at the leading edge tip of the impeller blade but maximum stress takes place at the blade root of the impeller. A significant reduction of the tip clearance height has occurred at the leading edge and the trailing edge of the impeller. Due to the reduction of the tip clearance, the tip leakage flow has decreased by 19.4% and 16.2% in the blade type A and B, respectively. The polytropic efficiency of blade type A and B at operating condition has increased by 0.72% and 1.81%, respectively. (C) 2016 Elsevier Ltd and IIR. All rights reserved.

引用

页码：92 / 102

页数：11

共 18 条

[1] Buffaz N., 2012, P ASME TURB EXP 2012
[2] INSTANTANEOUS MEASUREMENTS IN JET-WAKE DISCHARGE FLOW OF A CENTRIFUGAL COMPRESSOR IMPELLER
ECKARDT, D
[J]. JOURNAL OF ENGINEERING FOR POWER-TRANSACTIONS OF THE ASME, 1975, 97 (03): : 337 - 346
[3] THERMAL TIP CLEARANCE CONTROL FOR CENTRIFUGAL-COMPRESSOR OF AN APU ENGINE
EISENLOHR, G
CHLADEK, H
[J]. JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME, 1994, 116 (04): : 629 - 634
[4] Farge T.Z., 1989, ASME J TURBOMACH, V111, P244
[5] Guo GD, 2008, P ASME TURB EXP 2008 P ASME TURB EXP 2008
[6] EFFECT OF BLADE TIP CONFIGURATION ON TIP CLEARANCE LOSS OF A CENTRIFUGAL IMPELLER
ISHIDA, M
UEKI, H
SENOO, Y
[J]. JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME, 1990, 112 (01): : 14 - 18
[7] ON THE PRESSURE LOSSES DUE TO THE TIP CLEARANCE OF CENTRIFUGAL BLOWERS
ISHIDA, M
SENOO, Y
[J]. JOURNAL OF ENGINEERING FOR POWER-TRANSACTIONS OF THE ASME, 1981, 103 (02): : 271 - 278
[8] Jaatinen A., 2012, P ASME TURB EXP 2012, P8
[9] Experimental and Numerical Investigation of Tip Clearance and Bleed Effects in a Centrifugal Compressor Stage With Pipe Diffuser
Kunte, Robert
Schwarz, Philipp
Wilkosz, Benjamin
Jeschke, Peter
Smythe, Caitlin
[J]. JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME, 2013, 135 (01):
[10] EFFECTS OF FLUID LEAKAGE ON PERFORMANCE OF A CENTRIFUGAL-COMPRESSOR
MASHIMO, T
WATANABE, I
ARIGA, I
[J]. JOURNAL OF ENGINEERING FOR POWER-TRANSACTIONS OF THE ASME, 1979, 101 (03): : 337 - 342

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