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RISA Theory for Strain-Based Structural System Identification
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A theory for structural system identification which utilizes strains and translational displacements as measured outputs is presented. The state variables of the fundamental first-order form consist ...
Mainstream Aerodynamic Effects Due to Wheelspace Coolant Injection in a High-Pressure Turbine Stage: Part II—Aerodynamic Measurements in the Rotational Frame
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The current paper deals with the aerodynamic measurements in the rotational frame of reference of the Axial Flow Turbine Research Facility (AFTRF) at the Pennsylvania State University. Stationary ...
Mainstream Aerodynamic Effects Due to Wheelspace Coolant Injection in a High-Pressure Turbine Stage: Part I—Aerodynamic Measurements in the Stationary Frame
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The relative aerodynamic and performance effects associated with rotor–NGV gap coolant injections were investigated in the Axial Flow Turbine Research Facility (AFTRF) of the Pennsylvania State ...
Experimental Demonstration of Precision Control of a Deployable Optics Structure
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents the development, design, and implementation of a precision control system for a large, sparse-aperture space-deployable telescope testbed. Aspects of the testbed and laboratory ...
Predictions of Separated and Transitional Boundary Layers Under Low-Pressure Turbine Airfoil Conditions Using an Intermittency Transport Equation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new transport equation for the intermittency factor was proposed to predict separated and transitional boundary layers under low-pressure turbine airfoil conditions. The intermittent behavior of ...
Virtual Skyhook Vibration Isolation System
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This work presents and demonstrates a passive isolation system that offers the performance of a skyhook damper, but without the need of an inertial reference. This “virtual skyhook” isolation ...
Analysis of Nonlinear Aeroelastic Panel Response Using Proper Orthogonal Decomposition
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The nonlinear panel flutter problem solved by Dowell in 1966 is used to investigate the new application of the proper orthogonal decomposition model reduction technique to aeroelastic analysis. ...
Aerodynamics of Tip Leakage Flows Near Partial Squealer Rims in an Axial Flow Turbine Stage
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper deals with an experimental investigation of aerodynamic characteristics of full and partial-length squealer rims in a turbine stage. Full and partial-length squealer rims are investigated ...
Large-Eddy Simulation on Curvilinear Grids Using Compact Differencing and Filtering Schemes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This work investigates the application of a high-order finite difference method for compressible large-eddy simulations on stretched, curvilinear and dynamic meshes. The solver utilizes 4th and ...
Numerical Study of Nonreacting Gas Turbine Combustor Swirl Flow Using Reynolds Stress Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents recent research on the use of a Reynolds stress turbulence model (RSTM) for three-dimensional flowfield simulation inside gas turbine combustors. It intends to show the ...