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RISEfficient Computational Model for Nonaxisymmetric Flow and Heat Transfer in Rotating Cavity
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Existence of large scale unsteady flow structures manifested in contrarotating vortex pairs has been previously identified in rotor disk cavities. The nonaxisymmetric nature with an unknown number ...
Block-Spectral Approach to Film-Cooling Modeling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Gas turbine performance improvement requires efficient and accurate prediction tools for film-cooling of high pressure turbine blades. Use of computational fluid dynamics in the cooling design ...
Unsteady Flow in Oscillating Turbine Cascades: Part 2—Computational Study
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Unsteady flow around a linear oscillating turbine cascade has been experimentally and computationally studied, aimed at understanding the bubble type of flow separation and examining the predictive ...
Unsteady Flow in Oscillating Turbine Cascades: Part 1—Linear Cascade Experiment
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An experimental and computational study has been carried out on a linear cascade of low-pressure turbine blades with the middle blade oscillating in a torsion mode. The main objectives of the ...
An Euler Solution for Unsteady Flows Around Oscillating Blades
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A time-marching Euler calculation for 2-D and quasi-3-D unsteady flows in oscillating blade rows is presented, based on a finite volume scheme with cell-vertex discretization in space and 2-step ...
Computation of Unsteady Flows Around Oscillating Blades Using Linear and Nonlinear Harmonic Euler Methods
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A quasi-three-dimensional time-linearized Euler method has been developed to compute unsteady flows around oscillating blades. In the baseline method, unsteady flow is decomposed into a steady ...
Numerical Solution of Incompressible Unsteady Flows in Turbomachinery
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A three-dimensional incompressible viscous flow solver of the thin-layer Navier-Stokes equations was developed for the unsteady turbomachinery flow computations. The solution algorithm for the ...
Blade Count and Clocking Effects on Three-Bladerow Interaction in a Transonic Turbine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A computational study of the multirow interaction mechanisms has been carried out for a one-and-a-half stage (NGV-rotor-stator) transonic turbine. In addition to measurable subharmonic unsteadiness ...
Adjoint Aerodynamic Design Optimization for Blades in Multistage Turbomachines—Part I: Methodology and Verification
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The adjoint method for blade design optimization will be described in this two-part paper. The main objective is to develop the capability of carrying out aerodynamic blading shape design ...
Concurrent Blade Aerodynamic-Aero-elastic Design Optimization Using Adjoint Method
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Increasing aerothermal and aero-elastic performance requirements and constraints are closely linked in modern blading designs. There is thus a need for more concurrent interaction between the ...