Browsing Journal of Turbomachinery by Issue Date
Now showing items 1-20 of 4312
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Investigation of a Novel Turbine Housing to Produce a Nonuniform Spanwise Flow Field at the Inlet to a Mixed Flow Turbine and Provide Variable Geometry Capabilities
(The American Society of Mechanical Engineers (ASME), 1/30/2023 )Automotive engine downsizing has placed an increased focus on the ability of the turbocharger to provide adequate boost levels across the full engine operating range. To achieve the desired levels of turbocharger performance, ... -
Lean-Burn Combustor Simulator for an Engine-Component Test Facility: An Experimental and Computational Study
(The American Society of Mechanical Engineers (ASME), 1/30/2023 )The computational and experimental assessment of a lean-burn low-NOx combustor simulator for an engine component test facility is presented. The Engine Component Aero-Thermal (ECAT) facility is a full-scale engine-parts ... -
Aerodynamic Performance and Leakage Flow in Turbine Cascades With Sweeping Jet Actuators
(The American Society of Mechanical Engineers (ASME), 1/30/2023 )In recent years, unsteady flow-control technology has been considered as more promising for reducing secondary flow loss in turbines. Sweeping jet actuators (SJAs), in particular, have steadily been used in turbomachinery ... -
Numerical Investigations on Effect of Inflow Parameters on Development of Secondary Flow Field for Linear Low-Pressure Turbine Cascade
(The American Society of Mechanical Engineers (ASME), 11/25/2022)Endwall flows contribute the most crucial role in loss generation for axial flow turbine and compressor blades. These losses lead to modifying the blade loading and overall performance in terms of stable operating range. ... -
Analysis of Turbomachinery Averaging Techniques
(The American Society of Mechanical Engineers (ASME), 11/25/2022)In this paper, various averaging techniques commonly used in turbomachinery applications are analyzed. It is shown how the work average relates to Miller’s mechanical work potential and that it is, in a certain way, ... -
Unsteady Structure of Compressor Tip Leakage Flows
(The American Society of Mechanical Engineers (ASME), 11/25/2022)Direct numerical simulations (DNS) are performed of a cantilevered stator blade to identify the unsteady and turbulent flow structure within compressor tip flows. The simulations were performed with clearances of 1.6% and ... -
Some Properties of the Exit Velocity Triangle of a Radial Compressor Impeller
(The American Society of Mechanical Engineers (ASME), 11/25/2022)A diagram is described which demonstrates important aspects of the exit velocity triangle of a radial compressor impeller with no inlet swirl. Although this diagram is based on work dating back to 1941, it is not widely ... -
Numerical Investigations on the Rotating Stall in an Axial Compressor and Its Control by Flow Injection at Casing
(The American Society of Mechanical Engineers (ASME), 11/25/2022)The operating range of a compressor is limited by surge or rotating stall line, among others. Numerical simulations must accurately predict these phenomena. This study is based on the experimental compressor CME2, which ... -
Extensive Verification of the Denton New Scheme From the User’s Point of View: Part II—Comparison of Calculated and Experimental Results
(The American Society of Mechanical Engineers (ASME), 1986)A blade-to-blade flow program incorporated in the computer-aided turbine design system is required to have short run times, robustness, and no limitations. The Denton time-marching method published ... -
A Model for Closing the Inviscid Form of the Average-Passage Equation System
(The American Society of Mechanical Engineers (ASME), 1986)A mathematical model is proposed for closing or mathematically completing the system of equations which describes the time-averaged flow field through the blade passages of multistage turbomachinery. ... -
Axisymmetrically Stalled Flow Performance for Multistage Axial Compressors
(The American Society of Mechanical Engineers (ASME), 1986)A study of the stalled flow performance of multistage axial compressors is presented. A proposal is made regarding the form of axisymmetric pumping performance in stall (which is a requisite ... -
A Method for Transonic Inverse Cascade Design With a Stream Function Equation
(The American Society of Mechanical Engineers (ASME), 1986)A new profile design method is developed on the basis of [1–3] for transonic flow. The rotational dynamic stream function equation, which is expressed in functional form using calculated ... -
Discussion: “Extensive Verification of the Denton New Scheme From the User’s Point of View: Parts I and II” (Sato, T., Aoki, S., and Nagayama, T., 1986, ASME J. Turbomach., 108, pp. 162–177)
(The American Society of Mechanical Engineers (ASME), 1986) -
Extensive Verification of the Denton New Scheme From the User’s Point of View: Part I—Calibration of Code Control Variables
(The American Society of Mechanical Engineers (ASME), 1986)Recently, a computer-aided interactive design system has been used for turbine design. The blade-to-blade flow program incorporated in the system is required to have short run times, robustness, ... -
A Numerical Simulation of the Inviscid Flow Through a Counterrotating Propeller
(The American Society of Mechanical Engineers (ASME), 1986)This paper presents the results of a numerical simulation of the time-averaged inviscid flow field through the blade rows of a multiblade row turboprop configuration. The governing equations are ... -
Navier–Stokes Solutions of Unsteady Flow in a Compressor Rotor
(The American Society of Mechanical Engineers (ASME), 1986)In order to achieve more accurate predictions of unsteady flow in a transonic compressor rotor an existing numerical approach has been modified by incorporating a turbulence model. The computations ... -
An Inverse (Design) Problem Solution Method for the Blade Cascade Flow on Streamsurface of Revolution
(The American Society of Mechanical Engineers (ASME), 1986)On the basis of the fundamental equations of aerothermodynamics a method for solving the inverse (design) problem of blade cascade flow on the blade-to-blade streamsurface of revolution is ... -
Stator Endwall Leading-Edge Sweep and Hub Shroud Influence on Compressor Performance
(The American Society of Mechanical Engineers (ASME), 1986)The use of stator endwall leading-edge sweep to improve axial-flow compressor stator row performance was examined experimentally. The aerodynamics of three stator hub (inner diameter) conditions, ... -
Splitter Blades as an Aeroelastic Detuning Mechanism for Unstalled Supersonic Flutter of Turbomachine Rotors
(The American Society of Mechanical Engineers (ASME), 1986)A mathematical model is developed to demonstrate the application of splitter blades as an aeroelastic detuning mechanism for unstalled supersonic flutter of turbomachine rotors. The splitters ... -
Multistage Turbine Erosion
(The American Society of Mechanical Engineers (ASME), 1986)This paper presents a computer package developed to calculate the blade erosion rates in multistage turbines that use particle-laden hot expansion gases. This package is an extension of the ...