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TECHNICAL PAPERS

Linearized Unsteady Viscous Turbomachinery Flows Using Hybrid Grids

[+] Author and Article Information
L. Sbardella, M. Imregun

Imperial College of Science, Technology, & Medicine, Mechanical Engineering Department, Exhibition Road, London SW7 2BX, United Kingdom

J. Turbomach 123(3), 568-582 (Feb 01, 2001) (15 pages) doi:10.1115/1.1371777 History: Received February 01, 2001
Copyright © 2001 by ASME
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References

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Figures

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Median dual control volume for edge Ijs, showing nodes I and Js, and metric vector η⃗IJs
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Pressure jump on flat plate due to wake/rotor interaction
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Computational domain for laminar flow over a flat plate cascade: (a) computational mesh (5954 points); (b) trailing edge
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Steady laminar flow over a cascade of flat plates: (a) velocity profile; (b) skin friction coefficient
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Unsteady wall shear stresses for an oscillating laminar boundary layer: (a) amplitude; (b) phase angle with respect to external velocity fluctuation
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11th Standard configuration: viscous mesh
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11th Standard configuration: steady-state Mach contours, subsonic case
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11th Standard configuration: isentropic Mach number distribution along chord, subsonic case
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11th Standard configuration: steady-state Mach contours, transonic case: (a) Mach contours; (b) particle traces in the separation bubble
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11th Standard configuration: isentropic Mach number distribution along blade, transonic case
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11th Standard configuration: amplitude of c̃p(σ=180), subsonic case
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11th Standard configuration: phase of c̃p(σ=180), subsonic case
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11th Standard configuration: amplitude of c̃p(σ=180), transonic case
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11th Standard configuration: phase of c̃p(σ=180), transonic case
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Computational mesh for three dimensional rotor/stator interaction: (a) three-dimensional view; (b) midheight section
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Isentropic steady-state Mach number distribution at midheight section
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Nondimensional total pressure at NGV outlet
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Amplitude (left) and phase (right) of the first two Fourier components of the unsteady pressure p/p0 at midheight section (50 percent span); potential/rotor interaction (thin solid/blue), wake/rotor interaction (thin dotted/red), superimposed (darkest/black), measured (* ): (a) first Fourier harmonic; (b) second Fourier harmonic

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