Browsing Journal of Turbomachinery by Title
Now showing items 1-20 of 4312
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1995 ASME Gas Turbine Award Paper: Development and Application of a Multistage Navier–Stokes Flow Solver: Part II—Application to a High-Pressure Compressor Design
(The American Society of Mechanical Engineers (ASME), 1998)Two versions of a three-dimensional multistage Navier–Stokes code were used to optimize the design of an eleven-stage high-pressure compressor. The first version of the code utilized a “mixing ... -
1995 ASME Gas Turbine Award Paper: Development and Application of a Multistage Navier–Stokes Solver: Part I—Multistage Modeling Using Bodyforces and Deterministic Stresses
(The American Society of Mechanical Engineers (ASME), 1998)A multistage compressor performance analysis method based on the three-dimensional Reynolds-averaged Navier-Stokes equations is presented in this paper. This method is an average passage approach ... -
1997 Best Paper Award—Controls and Diagnostics Committee: Active Stabilization of Rotating Stall and Surge in a Transonic Single-Stage Axial Compressor
(The American Society of Mechanical Engineers (ASME), 1998)Rotating stall and surge have been stabilized in a transonic single-stage axial compressor using active feedback control. The control strategy is to sense upstream wall static pressure patterns ... -
1997 Best Paper Award—Education Committee: A Three-Dimensional Turbine Engine Analysis Compressor Code (TEACC) for Steady-State Inlet Distortion
(The American Society of Mechanical Engineers (ASME), 1998)The direct approach of modeling the flow between all blade passages for each blade row in the compressor is too computationally intensive for practical design and analysis investigations with ... -
1997 Best Paper Award—Heat Transfer Committee: The Turbulence That Matters
(The American Society of Mechanical Engineers (ASME), 1998)A unified expression for the spectrum of turbulence is developed by asymptotically matching known expressions for small and large wave numbers, and a formula for the one-dimensional spectral ... -
1997 Best Paper Award—Structures and Dynamics Committee: A Coupled Mode Analysis of Unsteady Multistage Flows in Turbomachinery
(The American Society of Mechanical Engineers (ASME), 1998)A computational method is presented for predicting the unsteady aerodynamic response of a vibrating blade row that is part of a multistage turbomachine. Most current unsteady aerodynamic theories ... -
1997 Best Paper Award—Turbomachinery Committee: A Study of Spike and Modal Stall Phenomena in a Low-Speed Axial Compressor
(The American Society of Mechanical Engineers (ASME), 1998)This paper presents a study of stall inception mechanisms in a low-speed axial compressor. Previous work has identified two common flow breakdown sequences, the first associated with a short ... -
1997 John P. Davis Award: The Impact of Machining Techniques on Centrifugal Compressor Impeller Performance
(The American Society of Mechanical Engineers (ASME), 1999)A large proportion of modern centrifugal impellers are machined from solid forgings rather than made from cast metal. The CNC milling process offers options to manufacturers to minimize manufacturing ... -
1998 Heat Transfer Committee Best Paper Award: Complementary Velocity and Heat Transfer Measurements in a Rotating Cooling Passage With Smooth Walls
(The American Society of Mechanical Engineers (ASME), 1999)An experimental investigation was conducted on the internal flowfield of a simulated smooth-wall turbine blade cooling passage. The square cross-sectioned passage was manufactured from quartz for ... -
1998 Turbomachinery Committee Best Paper Award: An Experimental Study of Tip Clearance Flow in a Radial Inflow Turbine
(The American Society of Mechanical Engineers (ASME), 1999)This paper describes an experimental investigation of tip clearance flow in a radial inflow turbine. Flow visualization and static pressure measurements were performed. These were combined with ... -
1999 Turbomachinery Committee Best Paper Award: Development of Advanced Compressor Airfoils for Heavy-Duty Gas Turbines— Part I: Design and Optimization
(The American Society of Mechanical Engineers (ASME), 2000)A new family of subsonic compressor airfoils, which are characterized by low losses and wide operating ranges, has been designed for use in heavy-duty gas turbines. In particular the influence ... -
1999 Turbomachinery Committee Best Paper Award: Development of Advanced Compressor Airfoils for Heavy-Duty Gas Turbines— Part II: Experimental and Theoretical Analysis
(The American Society of Mechanical Engineers (ASME), 2000)In Part I of this paper a family of numerically optimized subsonic compressor airfoils for heavy-duty gas turbines, covering a wide range of flow properties, is presented. The objective of the ... -
2D Viscous Aerodynamic Shape Design Optimization for Turbine Blades Based on Adjoint Method
(The American Society of Mechanical Engineers (ASME), 2011)This paper presents an adjoint optimization technique and its application to the design of a transonic turbine cascade. Capable of a quick and exact sensitivity analysis and using little ... -
3-D Transonic Flow in a Compressor Cascade With Shock-Induced Corner Stall
(The American Society of Mechanical Engineers (ASME), 2002)An experimental and numerical study of the transonic flow through a linear compressor cascade with endwalls was conducted. The cascade with a low aspect ratio of 1.34 was tested at an inlet ... -
3D Numerical Investigation of Tandem Airfoils for a Core Compressor Rotor
(The American Society of Mechanical Engineers (ASME), 2010)The tandem airfoil has potential to do more work as a compressor blade than a single airfoil without incurring higher losses. The goal of this work is to evaluate the fluid mechanics of a ... -
3D Unsteady Simulation of a Modern High Pressure Turbine Stage Using Phase Lag Periodicity: Analysis of Flow and Heat Transfer
(The American Society of Mechanical Engineers (ASME), 2011)Unsteady 3D Reynolds-averaged Navier–Stokes (RANS) simulations have been performed on a highly loaded transonic turbine stage, and results are compared with steady calculations and experiments. A ... -
45 deg Round-Corner Rib Heat Transfer Coefficient Measurements in a Square Channel
(The American Society of Mechanical Engineers (ASME), 1999)Cooling channels, roughened with repeated ribs, are commonly employed as a means of cooling turbine blades. The increased level of mixing induced by these ribs enhances the convective heat ... -
45 deg Staggered Rib Heat Transfer Coefficient Measurements in a Square Channel
(The American Society of Mechanical Engineers (ASME), 1998)For high-blockage ribs with large heat transfer areas, commonly used in small gas turbine blades, the rib heat transfer is a significant portion of the overall heat transfer in the cooling ... -
501F Compressor Development Program
(The American Society of Mechanical Engineers (ASME), 1992)As part of the Westinghouse-MHI 501F development program, a new 16-stage axial flow compressor has been designed. Reported here are elements of the aerodynamic and mechanical design as well as ... -
A 3D Compressible Flow Model for Weak Rotating Waves in Vaneless Diffusers—Part I: The Model and Mach Number Effects
(The American Society of Mechanical Engineers (ASME), 2012)A three-dimensional compressible flow model is presented to study the occurrence of weak rotating waves in vaneless diffusers of centrifugal compressors. The diffuser considered has two parallel ...