Zhenfei Wang

Quantifying the Impact of RANS Structural Uncertainty on Particle Transport in Compressors

Zhenfei Wang, Zhiheng Wang, Min Zeng, Zhu Huang et autres

Abstract Reliable prediction of particle transport in turbomachinery is essential for evaluating deposition, erosion, and performance degradation. Most existing particle-laden flow simulations rely on Reynolds-averaged Navier–Stokes (RANS) solutions, yet the inherent structural uncertainty (i.e., uncertainty in the shape and orientation of the …

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RANS structural uncertainty quantification of transonic centrifugal compressors aerodynamics using eigenvalue perturbation

Mingyi Wang, Zhenfei Wang, Zhu Huang, Zhiheng Wang et autres

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Bypass transition in favorable-adverse pressure gradient flow over a protruding rough surface under inlet free-stream turbulence

Weihao Ling, Zhiheng Wang, Zhenfei Wang, Wenlin Huang et autres

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RANS Structural Uncertainty Quantification of Transonic Centrifugal Compressors Aerodynamics Using Eigenvalue Perturbation

Mingyi Wang, Zhenfei Wang, Zhu Huang, Zhiheng Wang et autres

Improved Eigenspace Perturbation Framework for RANS Structural Uncertainty Quantification in Transonic Compressor Flows

Zhiheng Wang, Zhenfei Wang, Zhu Ping Huang, Guang Xi

Abstract Computational fluid dynamics (CFD) simulations based on the Reynolds-averaged Navier–Stokes (RANS) equations are essential for aerodynamic analysis and compressor design. However, structural uncertainties arising from the assumptions embedded in the constitutive model limit the precision of these simulations. This study proposes …

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A Roughness Prediction Method by Particle Deposition and its Effect on Flow and Heat Transfer in High-Pressure Turbine Cascade

Zhenfei Wang, Zhiheng Wang, Guang Xi

Abstract Particulate pollutants deposited on the blade surface alter the roughness and profile of the blade, leading to a decrease in the performance of the gas turbine. This paper proposes a method for predicting local roughness and integrates it with a critical …

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Numerical Study on the Propagation Characteristics of Circumferential Temperature Distortion in a Combined Compressor

Zhenfei Wang, Zhiheng Wang, Tongxi Li, Guang Xi

Abstract It is normal practice to design aero compressors under the assumption of uniform inlet flow. However, the distortion of temperature or/and other parameters at compressor inlet frequently occurs during actual operation due to surrounding environment. The aerodynamic stability and efficiency of …

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Research on the Correction Method of Thermal Environment Vibration at the Moment of High-Altitude Simulation Ignition for a Certain Engine

Tongxi Li, Zhenfei Wang, Zhiheng Wang

In order to calibrate the measurement errors of vibration amplitudes for different heat flux densities, a calibration model for acceleration amplitude measurement errors was established to adapt to the instantaneous thermal environment of attitude control engine high-altitude simulation ignition. A vibration correction …

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