Journal of Turbomachinery: Recent submissions
Now showing items 61-80 of 4312
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The Matching Mechanism and Flow Mechanisms of Supersonic Through-Flow Variable-Pitch Tandem Cascade
(The American Society of Mechanical Engineers (ASME), 2024)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 ... -
Resolvent Analysis for Subsonic Compressor With Impedance Boundary Condition Casing Treatment
(The American Society of Mechanical Engineers (ASME), 2024)A resolvent analysis framework for the axial compressor is established, and the impedance optimization is achieved based on the resolvent analysis framework for the impedance boundary condition casing treatment. This ... -
Impact of Lean-Burn Combustor Flow on Nozzle Guide Vane Performance
(The American Society of Mechanical Engineers (ASME), 2024)In this paper we investigate the impact of lean-burn-representative swirl and temperature distortion on the aerothermal performance of fully-cooled high-pressure nozzle guide vanes (NGVs) from a modern aero-engine. Experiments ... -
Three-Dimensional Unsteady Aerodynamic Optimization of a Transonic Compressor Stage Using an Implicit Discrete Adjoint Harmonic Balance Method
(The American Society of Mechanical Engineers (ASME), 2024)The design of high-loading and compact modern turbomachines results in strong unsteady interactions between two adjacent blade rows, which has been found to have a noticeable impact on aerodynamic performances of turbomachines. ... -
Equation-Oriented Meanline Method for Axial Turbine Performance Prediction Under Choking Conditions
(The American Society of Mechanical Engineers (ASME), 2024)Meanline models play a crucial role in turbine design and system-level analyses, facilitating rapid evaluation of design concepts and prediction of off-design performance. Most of the existing meanline methods are inadequate ... -
Guideline for Large-Scale Analysis of Centrifugal Blower Using Wall-Resolved Large Eddy Simulation
(The American Society of Mechanical Engineers (ASME), 2024)To reduce the number of prototypes during product design and accurately predict unsteady phenomena occurring at off-design points, a method for accurately predicting the performance of centrifugal blowers through numerical ... -
Sensitivity Analysis for Flow Stability of Axial Compressor Based on Meridional Flow
(The American Society of Mechanical Engineers (ASME), 2025)A sensitivity analysis method for flow stability of axial compressors based on meridional flow is proposed and employed to reveal the sensitive region of stability in the present article. The meridional stability model ... -
An Aerodynamic Investigation of a High-Pressure Turbine Using Rotor Casing Static Pressure Measurements at Engine Representative Conditions With Different Tip Designs, Tip Gaps, and Inlet Temperature Profiles
(The American Society of Mechanical Engineers (ASME), 2025)A rotating high-pressure (HP) turbine, in modern aircraft engines, is subjected to high cyclic thermal and mechanical loads. Shroudless turbines experience high heat loads on the rotor tip and casing, which makes them one ... -
Numerical and Experimental Investigation of Boundary Layer of a High-Lift Low-Pressure Turbine Cascade Under Periodic Wakes With Different Flow Coefficients
(The American Society of Mechanical Engineers (ASME), 2024)This article investigates the boundary layer on the suction surface of a low-pressure turbine (LPT) subjected to upstream wakes with three different unsteady flow cases, characterized by the variation of flow coefficients. ... -
Multidisciplinary Optimization of a Mixed-Flow Impeller With 140 Parameters and Its Shapley Additive Explanations
(The American Society of Mechanical Engineers (ASME), 2024)In recent years, we have made several improvements to the geometric parameterization method, the surrogate model method, and the sampling method, with the goal of making the traditional surrogate model-based optimization ... -
Enhanced Antideposition Performance of Film Cooling With a Shaped Sweeping Jet Hole
(The American Society of Mechanical Engineers (ASME), 2024)Shaped sweeping jet (SSJ) holes represent an advancement in sweeping jet (SJ) technology, as they offer enhanced cooling performance. To reveal the antideposition capabilities of SSJs, particle deposition results of ... -
Uncertainty Analysis of Laser Drilling Imperfection and Impacts on the Cooling Performance of a Transonic Turbine Vane
(The American Society of Mechanical Engineers (ASME), 2024)To ensure the durability and reliability of gas turbine, film cooling has been integrated into the design of the modern gas turbine vane endwall, especially for the first-stage vane endwall. Percussion laser drilling has ... -
Conjugate Heat Transfer Validation of an Optimized Film Cooling Configuration for a Turbine Vane Endwall
(The American Society of Mechanical Engineers (ASME), 2024)In this study, to improve overall cooling performance for the endwall of a turbine nozzle guide vane that incorporated internal jet impingement and external purge flow and discrete injection cooling, the external film ... -
Flow and Heat Transfer in a Ribbed Converging-Diverging U-Duct Under Rotating and Non-Rotating Conditions
(The American Society of Mechanical Engineers (ASME), 2024)A numerical study based on steady Reynolds-averaged-Navier–Stokes (RANS) with the shear stress transport (SST) turbulence model was performed to investigate the flow and heat transfer in a ribbed U-duct with a rectangular ... -
Convergence Acceleration of Favre-Averaged Non-Linear Harmonic Method
(The American Society of Mechanical Engineers (ASME), 2024)This paper develops a numerical procedure to accelerate the convergence of the Favre-averaged non-linear harmonic (FNLH) method. The scheme provides a unified mathematical framework for solving the sparse linear systems ... -
Unsteady Interaction Between Purge Flow and Secondary Flow in High-Lift Low-Pressure Turbine
(The American Society of Mechanical Engineers (ASME), 2024)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 ... -
Swirling Flow Effects on the Aeroacoustic Signature of an Aerospike Nozzle
(The American Society of Mechanical Engineers (ASME), 2025)Supersonic nozzles are not always operated at design conditions. The total pressure, temperature, and velocity distributions at the nozzle inlet plane are often characterized by inhomogeneities, conditions dictated by the ... -
Mode Analysis for the Rotating Aerodynamic Disturbance of a Transonic Fan
(The American Society of Mechanical Engineers (ASME), 2024)The non-synchronous blade vibration induced by a rotating aerodynamic disturbance is encountered for the fan of a turbofan engine working at 65% speedline. To analyze the unsteady characteristics, two methods based on the ... -
Scale-Resolving Simulations of Turbulent Flow Retaining the Exact Blade Count With the Time-Inclined Method
(The American Society of Mechanical Engineers (ASME), 2024)Simulations of the T106 low-pressure turbine linear cascade with incoming wakes have been conducted to demonstrate the suitability of the time-inclined method for retaining the exact blade count in scale-resolving simulations. ... -
Influence of Dilution and Effusion Flows in Generating Variable Inlet Profiles for a High-Pressure Turbine
(The American Society of Mechanical Engineers (ASME), 2024)The elevated flow temperatures and pressures exiting gas turbine combustors affect the efficiency and durability of the high-pressure turbine stage. Understanding the effects that result from the upstream dilution and ...