Werle-Legendre separation in a hydraulic machine draft tube

被引：29

作者：

Mauri, S ^{[1
]}

Kueny, JL ^{[1
]}

Avellan, F ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, Lab Hydraul Mach, LMH, CH-1007 Lausanne, Switzerland

来源：

JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME | 2004年 / 126卷 / 06期

关键词：

D O I：

10.1115/1.1839930

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The three-dimensional turbulent flow in a compact hydraulic machine elbow draft tube is numerically investigated for several operating conditions, covering an extended range around the best efficiency point. Comparisons with the experimental data are presented as validation. The interest is focused on the experimentally observed pressure recovery drop occurring near the best efficiency point. The flow is first analyzed locally by means of a topological analysis, then globally with an energetic approach. The study provides evidence for the role played by a Werle-Legendre separation originating in the bend. The separation is due to the contrasting flow angles imposed by the blades, and the angle resulting from the secondary flow.

引用

页码：976 / 980

页数：5

共 10 条

[1]

*AEA TECHN ENG SOF, 2000, CFX TASCFLOW THEOR D

[2]

CIOCAN GD, 2000, P 2000 ASME FLUIDS E

[3] Robert!Legendre and Henri!Werle:: Toward the elucidation of three-dimensional separation [J].

Délery, JM .

ANNUAL REVIEW OF FLUID MECHANICS, 2001, 33 :129-154

[4]

HORNUNG H, 1984, Z FLUGWISS WELTRAUM, V8, P77

[5]

MAURI S, 2002, THESIS LAUSANNA

[6]

MAURI S, 2000, P 2000 ASME FLUIDS E

[7]

MAURI S, 2002, P 21 IAHR S HYDR MAC, P231

[8]

RAW MJ, 1989, 36 ANN GEN M CAN AER

[9] Quantification of uncertainty in computational fluid dynamics [J].

Roache, PJ .

ANNUAL REVIEW OF FLUID MECHANICS, 1997, 29 :123-160

[10] TOPOLOGY OF 3-DIMENSIONAL SEPARATED FLOWS [J].

TOBAK, M ;

PEAKE, DJ .

ANNUAL REVIEW OF FLUID MECHANICS, 1982, 14 :61-85

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