Reconstruction of a three-dimensional, transonic rotor flow field from holographic interferogram data

Detailed measurements have been performed in a subsonic, axial-flow turbine stage to investigate the structure of the secondary flow field and the loss generation. The data include the static pressure distribution on the rotor blade passage surfaces and radial-circumferential measurements of the rotor exit flow field using three-dimensional hot-wire and pneumatic probes. The flow field at the rotor outlet is derived from unsteady hot-wire measurements with high temporal and spatial resolution. The paper presents the formation of the tip clearance vortex and the passage vortices, which are strongly influenced by the spanwise nonuniform stator outlet flow. Taking the experimental values for the unsteady flow velocities and turbulence properties, the effect of the periodic stator wakes on the rotor flow is discussed.

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Acoustic Flutter Control of Three-Dimensional Transonic Rotor Flow

Journal of Propulsion and Power ◽

10.2514/2.6048 ◽

2002 ◽

Vol 18 (5) ◽

pp. 1003-1011 ◽

Cited By ~ 5

Author(s):

Pong-Jeu Lu ◽

Dartzi Pan ◽

Yi-Di Yu

Keyword(s):

Three Dimensional ◽

Transonic Rotor ◽

Rotor Flow

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The Relative Merits of an Inviscid Euler 3-D and Quasi-3-D Analysis for the Design of Transonic Rotors

Volume 1: Turbomachinery ◽

10.1115/88-gt-69 ◽

1988 ◽

Author(s):

D. P. Miller ◽

A. C. Bryans

Keyword(s):

Flow Field ◽

Numerical Solutions ◽

Axisymmetric Flow ◽

Three Dimensional ◽

Viscous Effects ◽

Blade Loading ◽

Rotor Design ◽

Accurate Indication ◽

Through Flow ◽

Transonic Rotor

It is the purpose of this paper to examine the flow fields in an advanced modern transonic rotor design using both axisymmetric and three dimensional techniques. Also, to determine the deviation of the axisymmetric flow from three-dimensional flow field and whether this seriously affects the results. Inviscid Euler solvers are now widely used to analyze transonic flows through turbomachines giving a reasonably accurate indication of the flow field in blade passages. Although viscous effects are important, the inviscid analysis provides significant knowledge of the flow field which is essential to transonic design. The blade-to-blade loading and work distributions are determined quite realistically by the 3-D and quasi-3-D inviscid analyses. Through-flow and blade-to-blade inviscid solutions are presented for a highly loaded transonic rotor. Numerical solutions for various transonic rotor designs operating at peak efficiency are also compared with test data.

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Quasi‐Three‐Dimensional Shock Fitting for Transonic Rotor Flow Fields in Hover

Journal of the American Helicopter Society ◽

10.4050/jahs.40.83 ◽

1995 ◽

Vol 40 (1) ◽

pp. 83-86

Author(s):

Valana L. Wells ◽

Thomas E. Vincent ◽

John W. Rutherford

Keyword(s):

Three Dimensional ◽

Flow Fields ◽

Shock Fitting ◽

Transonic Rotor ◽

Rotor Flow

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Effects of Stator Wakes and Spanwise Nonuniform Inlet Conditions on the Rotor Flow of an Axial Turbine Stage

Volume 1: Turbomachinery ◽

10.1115/91-gt-093 ◽

1991 ◽

Cited By ~ 4

Author(s):

J. Zeschky ◽

H. E. Gallus

Keyword(s):

Flow Field ◽

Three Dimensional ◽

Axial Flow ◽

Tip Clearance ◽

Hot Wire ◽

Turbine Stage ◽

Static Pressure Distribution ◽

Inlet Conditions ◽

Experimental Values ◽

Rotor Flow

Detailed measurements have been performed in a subsonic, axial-flow turbine stage to investigate the structure of the secondary flow field and the loss generation. The data includes the static pressure distribution on the rotor blade passage surfaces and radial-circumferential measurements of the rotor exit flow field using three-dimensional hot-wire and pneumatic probes. The flow field at the rotor outlet is derived from unsteady hot-wire measurements with high temporal and spatial resolution. The formation of the tip clearance vortex and the passage vortices is presented, which are strongly influenced by the spanwise nonuniform stator outlet flow. Taking the experimental values for the unsteady flow velocities and turbulence properties, the effect of the periodic stator wakes on the rotor flow is discussed.

Download Full-text