Volume 128 Issue 4 | J. Turbomach. | ASME Digital Collection

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Technical Papers

Modeling and Experimental Investigation of Micro-hydrostatic Gas Thrust Bearings for Micro-turbomachines

J. Turbomach. October 2006, 128(4): 597–605. doi: https://doi.org/10.1115/1.2219760

View articletitled, Modeling and Experimental Investigation of Micro-hydrostatic Gas Thrust Bearings for Micro-turbomachines

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Topics: Hydrostatics , Thrust bearings , Rotors , Pressure , Bearings

Analysis of Tilting Effects and Geometric Nonuniformities in Micro-hydrostatic Gas Thrust Bearings

C. J. Teo, Z. S. Spakovszky

J. Turbomach. October 2006, 128(4): 606–615. doi: https://doi.org/10.1115/1.2219761

Abstract

View articletitled, Analysis of Tilting Effects and Geometric Nonuniformities in Micro-hydrostatic Gas Thrust Bearings

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Topics: Hydrostatics , Orifices , Rotors , Stiffness , Thrust bearings , Flow (Dynamics)

An Investigation of Wake-Shock Interactions in a Transonic Compressor With Digital Particle Image Velocimetry and Time-Accurate Computational Fluid Dynamics

Steven E. Gorrell, David Car, Steven L. Puterbaugh, Jordi Estevadeordal, Theodore H. Okiishi

J. Turbomach. October 2006, 128(4): 616–626. doi: https://doi.org/10.1115/1.2220049

Abstract

View articletitled, An Investigation of Wake-Shock Interactions in a Transonic Compressor With Digital Particle Image Velocimetry and Time-Accurate Computational Fluid Dynamics

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Topics: Blades , Generators , Rotors , Shock (Mechanics) , Turbochargers , Wakes , Computational fluid dynamics , Simulation , Compressors , Flow (Dynamics)

Numerical Optimization of a Vaned Shroud Design for Increased Operability Margin in Modern Centrifugal Compressors

M. T. Barton, M. L. Mansour, J. S. Liu, D. L. Palmer

J. Turbomach. October 2006, 128(4): 627–631. doi: https://doi.org/10.1115/1.2187526

Abstract

View articletitled, Numerical Optimization of a Vaned Shroud Design for Increased Operability Margin in Modern Centrifugal Compressors

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Topics: Compressors , Computational fluid dynamics , Design , Flow (Dynamics) , Impellers , Optimization , Surges , Mesh generation , Blades , Aerodynamics

Analysis of Some Improved Blade Tip Concepts

C. Prakash, C. P. Lee, D. G. Cherry, R. Doughty, A. R. Wadia

J. Turbomach. October 2006, 128(4): 639–642. doi: https://doi.org/10.1115/1.2220050

Abstract

View articletitled, Analysis of Some Improved Blade Tip Concepts

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Topics: Blades , Flow (Dynamics) , Leakage , Pressure , Turbines , Computational fluid dynamics , Clearances (Engineering)

Aerodesign and Testing of an Aeromechanically Highly Loaded LP Turbine

F. J. Malzacher, J. Gier, F. Lippl

J. Turbomach. October 2006, 128(4): 643–649. doi: https://doi.org/10.1115/1.2172646

Abstract

View articletitled, Aerodesign and Testing of an Aeromechanically Highly Loaded LP Turbine

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Topics: Design , Mach number , Turbines , Airfoils , Pressure , Flow (Dynamics) , Reynolds number , Cascades (Fluid dynamics) , Boundary-value problems

A Study of Advanced High-Loaded Transonic Turbine Airfoils

Toyotaka Sonoda, Toshiyuki Arima, Markus Olhofer, Bernhard Sendhoff, Friedrich Kost, P.-A. Giess

J. Turbomach. October 2006, 128(4): 650–657. doi: https://doi.org/10.1115/1.2221325

Abstract

View articletitled, A Study of Advanced High-Loaded Transonic Turbine Airfoils

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Topics: Airfoils , Blades , Boundary layers , Computational fluid dynamics , Design , Flow (Dynamics) , Mach number , Pressure , Shock (Mechanics) , Turbines

Defining the Efficiency of a Cooled Turbine

J. B. Young, J. H. Horlock

J. Turbomach. October 2006, 128(4): 658–667. doi: https://doi.org/10.1115/1.2218890

Abstract

View articletitled, Defining the Efficiency of a Cooled Turbine

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Topics: Cascades (Fluid dynamics) , Coolants , Entropy , Flow (Dynamics) , Pressure , Turbines , Cooling , Temperature , Gases

Direct Numerical Simulations of Transitional Flow in Turbomachinery

J. G. Wissink, W. Rodi

J. Turbomach. October 2006, 128(4): 668–678. doi: https://doi.org/10.1115/1.2218517

Abstract

View articletitled, Direct Numerical Simulations of Transitional Flow in Turbomachinery

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Topics: Boundary layers , Flow (Dynamics) , Separation (Technology) , Simulation , Wakes , Inflow , Cascades (Fluid dynamics) , Heat transfer , Turbines , Blades

Combustion Control by Vortex Breakdown Stabilization

Christian Oliver Paschereit, Peter Flohr, Ephraim J. Gutmark

J. Turbomach. October 2006, 128(4): 679–688. doi: https://doi.org/10.1115/1.2218521

Abstract

View articletitled, Combustion Control by Vortex Breakdown Stabilization

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Topics: Combustion , Computational fluid dynamics , Flames , Vortices , Pressure , Safety , Flow (Dynamics) , High pressure (Physics) , Engines , Combustion chambers

On the Momentum and Thermal Structures of Turbulent Spots in a Favorable Pressure Gradient

T. P. Chong, S. Zhong

J. Turbomach. October 2006, 128(4): 689–698. doi: https://doi.org/10.1115/1.2218520

Abstract

View articletitled, On the Momentum and Thermal Structures of Turbulent Spots in a Favorable Pressure Gradient

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Topics: Boundary layers , Momentum , Pressure gradient , Temperature , Turbulence , Fluctuations (Physics) , Heat transfer

The Importance of Shroud Leakage Modeling in Multistage Turbine Flow Calculations

Budimir Rosic, John D. Denton, Graham Pullan

J. Turbomach. October 2006, 128(4): 699–707. doi: https://doi.org/10.1115/1.2181999

Abstract

View articletitled, The Importance of Shroud Leakage Modeling in Multistage Turbine Flow Calculations

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Topics: Blades , Cavities , Flow (Dynamics) , Leakage , Leakage flows , Modeling , Stators , Turbines , Clearances (Engineering) , Rotors

Toward Defining Objective Criteria for Assessing the Adequacy of Assumed Axisymmetry and Steadiness of Flows in Rotating Cavities

G. D. Snowsill, C. Young

J. Turbomach. October 2006, 128(4): 708–716. doi: https://doi.org/10.1115/1.2185124

Abstract

View articletitled, Toward Defining Objective Criteria for Assessing the Adequacy of Assumed Axisymmetry and Steadiness of Flows in Rotating Cavities

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Topics: Cavities , Computational fluid dynamics , Flow (Dynamics) , Geometry , Turbulence , Modeling , Boundary-value problems

Dynamic Characteristics of the Diverging Taper Honeycomb-Stator Seal

Anthony J. Smalley, Massimo Camatti, Dara W. Childs, Justin R. Hollingsworth, Giuseppe Vannini, Jeremy J. Carter

J. Turbomach. October 2006, 128(4): 717–724. doi: https://doi.org/10.1115/1.2218891

Abstract

View articletitled, Dynamic Characteristics of the Diverging Taper Honeycomb-Stator Seal

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Topics: Clearances (Engineering) , Compressors , Damping , Honeycomb structures , Stators , Stiffness , Pressure , Turbomachinery , Rotors

Rotordynamic Force Coefficients of Pocket Damper Seals

B. Ertas, A. Gamal, J. Vance

J. Turbomach. October 2006, 128(4): 725–737. doi: https://doi.org/10.1115/1.2221327

Abstract

View articletitled, Rotordynamic Force Coefficients of Pocket Damper Seals

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Topics: Bearings , Cavities , Clearances (Engineering) , Dampers , Damping , Excitation , Pressure , Rotors , Stiffness , Stators

The Dynamics of the Horseshoe Vortex and Associated Endwall Heat Transfer—Part I: Temporal Behavior

T. J. Praisner, C. R. Smith

J. Turbomach. October 2006, 128(4): 747–754. doi: https://doi.org/10.1115/1.2185676

Abstract

View articletitled, The Dynamics of the Horseshoe Vortex and Associated Endwall Heat Transfer—Part I: Temporal Behavior

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Topics: Flow (Dynamics) , Heat transfer , Vortices , Vorticity , Boundary layers , Turbulence , Vickers hardness testing , Fluids , Boundary layer turbulence

The Dynamics of the Horseshoe Vortex and Associated Endwall Heat Transfer—Part II: Time-Mean Results

T. J. Praisner, C. R. Smith

J. Turbomach. October 2006, 128(4): 755–762. doi: https://doi.org/10.1115/1.2185677

Abstract

View articletitled, The Dynamics of the Horseshoe Vortex and Associated Endwall Heat Transfer—Part II: Time-Mean Results

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Topics: Flow (Dynamics) , Heat transfer , Vortices , Vorticity , Vickers hardness testing , Boundary layers , Turbulence

Large Eddy Simulation of Flow and Heat Transfer in the $180 ‐ Deg$ Bend Region of a Stationary Gas Turbine Blade Ribbed Internal Cooling Duct

Evan A. Sewall, Danesh K. Tafti

J. Turbomach. October 2006, 128(4): 763–771. doi: https://doi.org/10.1115/1.2098769

Abstract

View articletitled, Large Eddy Simulation of Flow and Heat Transfer in the <span class="inline-formula no-formula-id"><span class="mathFormula"></span><math xmlns="http://www.w3.org/1998/Math/MathML"><mrow xmlns=""><mn>180</mn><mtext>‐</mtext><mi>Deg</mi></mrow></math></span> Bend Region of a Stationary Gas Turbine Blade Ribbed Internal Cooling Duct

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Topics: Ducts , Flow (Dynamics) , Friction , Heat transfer , Turbulence , Large eddy simulation , Vortices , Cooling , Blades , Gas turbines

Fluid Flow and Heat Transfer in Two-Pass Smooth Rectangular Channels With Different Turn Clearances

Hiroshi Nakayama, Masafumi Hirota, Hideomi Fujita, Takeshi Yamada, Yusuke Koide

J. Turbomach. October 2006, 128(4): 772–785. doi: https://doi.org/10.1115/1.2101854

Abstract

View articletitled, Fluid Flow and Heat Transfer in Two-Pass Smooth Rectangular Channels With Different Turn Clearances

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Topics: Flow (Dynamics) , Heat transfer , Turbulence , Exterior walls

Analysis and Optimization of Transonic Centrifugal Compressor Impellers Using the Design of Experiments Technique

Duccio Bonaiuti, Andrea Arnone, Mirco Ermini, Leonardo Baldassarre

J. Turbomach. October 2006, 128(4): 786–797. doi: https://doi.org/10.1115/1.1579507

Abstract

View articletitled, Analysis and Optimization of Transonic Centrifugal Compressor Impellers Using the Design of Experiments Technique

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Topics: Blades , Design , Impellers , Optimization , Shapes , Experimental design

Influence of Blade Leading Edge Geometry on Turbine Endwall Heat (Mass) Transfer

S. Han, R. J. Goldstein

J. Turbomach. October 2006, 128(4): 798–813. doi: https://doi.org/10.1115/1.2221326

Abstract

View articletitled, Influence of Blade Leading Edge Geometry on Turbine Endwall Heat (Mass) Transfer

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Topics: Blades , Geometry , Heat , Mass transfer , Turbines , Turbulence , Vortices , Flow (Dynamics) , Heat transfer , Suction

Technical Papers

The Influence of Variable Gas Properties on Turbomachinery Computational Fluid Dynamics

John D. Northall

J. Turbomach. October 2006, 128(4): 632–638. doi: https://doi.org/10.1115/1.2221324

Abstract

View articletitled, The Influence of Variable Gas Properties on Turbomachinery Computational Fluid Dynamics

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Topics: Blades , Computational fluid dynamics , Cooling , Flow (Dynamics) , Fuels , Pressure , Temperature , Turbines , Turbomachinery , Coolants

Analysis of Airfoil Trailing Edge Heat Transfer and Its Significance in Thermal-Mechanical Design and Durability

F. J. Cunha, M. T. Dahmer, M. K. Chyu

J. Turbomach. October 2006, 128(4): 738–746. doi: https://doi.org/10.1115/1.2220047

Abstract

View articletitled, Analysis of Airfoil Trailing Edge Heat Transfer and Its Significance in Thermal-Mechanical Design and Durability

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Topics: Airfoils , Cooling , Design , Pressure , Temperature , Heat transfer , Durability , Metals , Turbines

Technology Review

Overview of Creep Strength and Oxidation of Heat-Resistant Alloy Sheets and Foils for Compact Heat Exchangers

Philip J. Maziasz, John P. Shingledecker, Bruce A. Pint, Neal D. Evans, Yukinori Yamamoto, Karren More, Edgar Lara-Curzio

J. Turbomach. October 2006, 128(4): 814–819. doi: https://doi.org/10.1115/1.2187525

Abstract

View articletitled, Overview of Creep Strength and Oxidation of Heat-Resistant Alloy Sheets and Foils for Compact Heat Exchangers

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Topics: Alloys , Creep , Oxidation , Heat exchangers , Stainless steel , Heat , Temperature , Microturbines , Rupture , Steel

Technical Papers

Modeling and Experimental Investigation of Micro-hydrostatic Gas Thrust Bearings for Micro-turbomachines

Analysis of Tilting Effects and Geometric Nonuniformities in Micro-hydrostatic Gas Thrust Bearings

An Investigation of Wake-Shock Interactions in a Transonic Compressor With Digital Particle Image Velocimetry and Time-Accurate Computational Fluid Dynamics

Numerical Optimization of a Vaned Shroud Design for Increased Operability Margin in Modern Centrifugal Compressors

Analysis of Some Improved Blade Tip Concepts

Aerodesign and Testing of an Aeromechanically Highly Loaded LP Turbine

A Study of Advanced High-Loaded Transonic Turbine Airfoils

Defining the Efficiency of a Cooled Turbine

Direct Numerical Simulations of Transitional Flow in Turbomachinery

Combustion Control by Vortex Breakdown Stabilization

On the Momentum and Thermal Structures of Turbulent Spots in a Favorable Pressure Gradient

The Importance of Shroud Leakage Modeling in Multistage Turbine Flow Calculations

Toward Defining Objective Criteria for Assessing the Adequacy of Assumed Axisymmetry and Steadiness of Flows in Rotating Cavities

Dynamic Characteristics of the Diverging Taper Honeycomb-Stator Seal

Rotordynamic Force Coefficients of Pocket Damper Seals

The Dynamics of the Horseshoe Vortex and Associated Endwall Heat Transfer—Part I: Temporal Behavior

The Dynamics of the Horseshoe Vortex and Associated Endwall Heat Transfer—Part II: Time-Mean Results

Large Eddy Simulation of Flow and Heat Transfer in the $180 ‐ Deg$ Bend Region of a Stationary Gas Turbine Blade Ribbed Internal Cooling Duct

Fluid Flow and Heat Transfer in Two-Pass Smooth Rectangular Channels With Different Turn Clearances

Analysis and Optimization of Transonic Centrifugal Compressor Impellers Using the Design of Experiments Technique

Influence of Blade Leading Edge Geometry on Turbine Endwall Heat (Mass) Transfer

Technical Papers

The Influence of Variable Gas Properties on Turbomachinery Computational Fluid Dynamics

Analysis of Airfoil Trailing Edge Heat Transfer and Its Significance in Thermal-Mechanical Design and Durability

Technology Review

Overview of Creep Strength and Oxidation of Heat-Resistant Alloy Sheets and Foils for Compact Heat Exchangers

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