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RISFan Flutter Mechanisms Related to Blade Mode Shape and Acoustic Properties
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The blade mode shape and acoustic properties are important factors that affect the aeroelasticity of fan blades. The goal of this paper is to investigate the stall flutter mechanism associated with the first mode and its ...
The Matching Mechanism and Flow Mechanisms of Supersonic Through-Flow Variable-Pitch Tandem Cascade
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The geometric structure of the supersonic through-flow variable-pitch tandem fan poses challenges in ensuring optimal relative blade positions across various operating modes. This study employed numerical simulations to ...
Optimization of Smooth Straight-Through Labyrinth Seal Based on XGBoost and Improved Genetic Algorithm
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Improving the sealing performance of labyrinth seal is beneficial in reducing the loss of downstream components as well as improving the aero-engines' efficiency. Meanwhile, the optimization of labyrinth seal is more ...
Control of Three-Dimensional Corner Separation Flow in a Highly Loaded Compressor Cascade via Dynamic Surface Deformation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: When the Reynolds (Re) number decreases below the critical value, the intensified turbulent mixing in the corner region rapidly deteriorates the performance of compressors, including efficiency and stability. However, ...
The Effect of Tip Clearance on Fan Aeroelasticity Considering Acoustic Propagation Characteristics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Tip clearance is a critical parameter affecting fan performance and aeroelastic stability. This paper investigates the effect of tip clearance on fan aeroelasticity under different acoustic propagation characteristics ...
On the Mechanism of Unsteady Tip Flow Occurrence in a Transonic Fan
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Abstract. The tip clearance flow, closely related to stable margin and efficiency, influences the performance of the fan/compressor in aeroengines. The unsteady tip flow in a high-speed transonic fan rotor is studied by ...
Numerical Investigation of the Outlet Stage Variable Tandem Stator Adjustment on the Performance and Internal Flow Mechanism in an Ultra-Wide Range Adjustable Fan
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Abstract. With the continuous expansion of the aero engine flight envelope, the three-bypass adaptive cycle compression system must enhance both the flow adjustment range of the rear fan and the throughflow capacity during ...
Parametric Studies of Pipe Diffuser on Performance of a Highly Loaded Centrifugal Compressor
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Pipe diffusers with several different geometries were designed for a highly loaded centrifugal compressor originally using a wedge diffuser. Parametric studies on the effect of pipe diffuser performance of a highly loaded ...
Numerical Investigation of the Fan Flutter Mechanism Related to Acoustic Propagation Characteristics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this study, the flutter mechanism related to acoustic propagation characteristics of a wide-chord fan rotor was investigated numerically. The first bending mode and its two and three nodal diameters traveling wave ...
Unsteady Interaction Between Purge Flow and Secondary Flow in High-Lift Low-Pressure Turbine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The coupling effect between the complex vortex system and the rim purge flow in the endwall region of a high-lift low-pressure turbine (LPT) will significantly influence the evolution of secondary flow and the corresponding ...