THE USE OF 3D VISCOUS-FLOW CALCULATIONS IN THE DESIGN AND ANALYSIS OF INDUSTRIAL CENTRIFUGAL COMPRESSORS

被引：13

作者：

CASEY, MV ^{[1
]}

DALBERT, P ^{[1
]}

ROTH, P ^{[1
]}

机构：

[1] SULZER ESCHER WYSS LTD, DIV THERMAL TURBOMACHINERY, ZURICH, SWITZERLAND

来源：

JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME | 1992年 / 114卷 / 01期

关键词：

D O I：

10.1115/1.2927995

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The 3D viscous codes of Denton and Dawes have been used to predict the flow field and performance of a back-swept industrial centrifugal impeller without an inducer (the Eckardt impeller "B"). The calculated flow field and performance agree very well with measurements at several operating points from surge to choke. Both codes predict that the suction surface flow near the impeller inlet is on the verge of separation at the design point. Calculations with tip clearance using the Dawes code predict a thin region of backflow in the clearance jet near the casing wall. The secondary flows arising from the meridional curvature in the impeller redistribute the losses generated on the blades and give rise to a spanwise stratification of the circumferentially mass-averaged losses. The resulting spanwise entropy gradient can be included in a throughflow calculation to improve the prediction of the meridional velocity distribution at impeller exit.

引用

页码：27 / 37

页数：11

共 20 条

[1] ADKINS GG, 1988, ASME J ENG POWER, V103, P97
[2] A COMPUTATIONAL GEOMETRY FOR THE BLADES AND INTERNAL FLOW CHANNELS OF CENTRIFUGAL COMPRESSORS
CASEY, MV
[J]. JOURNAL OF ENGINEERING FOR POWER-TRANSACTIONS OF THE ASME, 1983, 105 (02): : 288 - 295
[3] CASEY MV, 1985, VDI5721 BER, P167
[4] CASEY MW, 1984, COMPUTATIONAL METHOD
[5] CHEN YN, 1989, ASME, V111, P450
[6] DAWES WN, 1988, ASME88GT70 PAP
[7] DENTON JD, 1988, COMMUNICATION
[8] DENTON JD, 1986, ASME86GT14 PAP
[9] DETAILED FLOW INVESTIGATIONS WITHIN A HIGH-SPEED CENTRIFUGAL-COMPRESSOR IMPELLER
ECKARDT, D
[J]. JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 1976, 98 (03): : 390 - 402
[10] ECKARDT D, 1978, DFVLR I352782 BER

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