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    Fan Flutter Mechanisms Related to Blade Mode Shape and Acoustic Properties 

    Source: Journal of Turbomachinery:;2023:;volume( 145 ):;issue: 009:;page 91013-1
    Author(s): Dong, Xu; Zhang, Yanfeng; Lu, Xingen
    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 ...
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    The Matching Mechanism and Flow Mechanisms of Supersonic Through-Flow Variable-Pitch Tandem Cascade 

    Source: Journal of Turbomachinery:;2024:;volume( 147 ):;issue: 003:;page 31001-1
    Author(s): Sheng, Xiaoying; Lu, Xingen; Li, Ziliang; Wu, Yunfeng; Yuan, Hang; Yang, Chengwu
    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 ...
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    Optimization of Smooth Straight-Through Labyrinth Seal Based on XGBoost and Improved Genetic Algorithm 

    Source: Journal of Engineering for Gas Turbines and Power:;2024:;volume( 147 ):;issue: 003:;page 31007-1
    Author(s): Liu, Hao; Li, Guoqing; Kang, Chenyang; Ruan, Yunhong; Wang, Ruofan; Lu, Xingen
    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 ...
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    Parametric Studies of Pipe Diffuser on Performance of a Highly Loaded Centrifugal Compressor 

    Source: Journal of Engineering for Gas Turbines and Power:;2014:;volume( 136 ):;issue: 012:;page 122604
    Author(s): Han, Ge; Lu, Xingen; Zhao, Shengfeng; Yang, Chengwu; Zhu, Junqiang
    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 ...
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    Numerical Investigation of the Fan Flutter Mechanism Related to Acoustic Propagation Characteristics 

    Source: Journal of Turbomachinery:;2022:;volume( 144 ):;issue: 010:;page 101009-1
    Author(s): Dong, Xu; Zhang, Yanfeng; Lu, Xingen; Zhang, Yingjie; Gan, Jiuliang
    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 ...
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    Effects of High Rotational Speed on Leakage and Windage Heating of Staggered Labyrinth Seals With Smooth and Honeycomb Lands 

    Source: Journal of Engineering for Gas Turbines and Power:;2023:;volume( 145 ):;issue: 008:;page 81005-1
    Author(s): Liu, Hao; Li, Guoqing; Li, Ang; Zhang, Shen; Li, Hui; Lu, Xingen
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Being an important component of aero-engines, the labyrinth seal has always been the focus of research for leakage characteristics. Rotation is usually neglected or taken for minimal effect on seal leakage in previous ...
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    Film Cooling Performance on a Turbine Blade With Subregional Compound Angle 

    Source: ASME Journal of Heat and Mass Transfer:;2024:;volume( 146 ):;issue: 005:;page 53801-1
    Author(s): Li, Guoqing; Li, Ang; Zhang, Shen; Wang, Chenfeng; Lu, Xingen
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Under the influence of secondary flow, the film cooling deviates from the flow direction on the turbine blade, which directly results in undesirable uneven film coverage. On the pressure side, the film appears divergent, ...
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    Evolution and Action Mechanism of Relative Negative Pressure Zone in Spiral Groove Gas Face Seal for Aero-Engine 

    Source: Journal of Tribology:;2023:;volume( 146 ):;issue: 002:;page 24401-1
    Author(s): Li, Hui; Li, Guoqing; Liu, Hao; Li, Ang; Lu, Xingen
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: As an advanced sealing technology, the application of gas face seal in aero-engine is few; if possible, lower specific fuel consumption, higher thrust-weight ratio, and effective secondary flow control at minimal cost would ...
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    Unsteady Interaction Between Purge Flow and Secondary Flow in High-Lift Low-Pressure Turbine 

    Source: Journal of Turbomachinery:;2024:;volume( 146 ):;issue: 011:;page 111005-1
    Author(s): Qu, Xiao; Wu, Meng; Zhang, Yanfeng; Lu, Xingen; Li, Liunan; Jiang, Yuyan; Zhu, Junqiang
    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 ...
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    Stall Behavior in an Ultrahigh-Pressure-Ratio Centrifugal Compressor: Backward-Traveling Rotating Stall 

    Source: Journal of Turbomachinery:;2022:;volume( 144 ):;issue: 010:;page 101010-1
    Author(s): Zhang, Yingjie; Lu, Xingen; Zhang, Yanfeng; Zhang, Ziqing; Dong, Xu; Han, Ge
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: This paper describes the stall mechanism in an ultrahigh-pressure-ratio centrifugal compressor, composed of a double-splitter impeller, radial diffuser, and axial diffuser. A model comprising all impeller and diffuser blade ...
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