Results 1 to 10 of about 58,339 (270)
Analysis of Tip Clearance Effect on the Transportation Characteristics of a Multiphase Rotodynamic Pump Based on the Non-Uniform Bubble Model [PDF]
Fluids, 2022 The multiphase rotodynamic pump is widely used in petroleum and gas exploitation, and blade tip clearance may cause flow instability and performance deterioration.
Weihua Sun +3 more
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Energies, 2023 This study aims to numerically investigate a transonic compressor by solving the unsteady Reynolds-averaged Navier–Stokes equations. The flow mechanisms related to unsteady flow were carefully examined and compared between rotors with non-uniform tip ...
Guochen Zhang +4 more
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Fast-moving Mesh Method and Its Application to Circumferential Non-uniform Tip Clearance in a Single-stage Turbine [PDF]
Journal of Applied Fluid MechanicsThe circumferential non-uniform tip clearance (CNTC) due to casing out-of-roundness adversely affects the turbine aerodynamic performance due to machining and assembly errors, thermal deformation, and improper active clearance control (ACC), etc ...
Y. Zheng, X. B. Jin, H. Yang
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Aerodynamic performance optimization and unsteady flow field stability analysis of a supercritical carbon dioxide centrifugal compressor with non-uniform blade tip clearance [PDF]
AIP AdvancesTip leakage flow is a critical factor constraining the efficiency and stability of supercritical carbon dioxide (SCO2) centrifugal compressors. To address this challenge, this study proposes a non-uniform blade tip clearance design and establishes a ...
Zhengjing Shen +4 more
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NUMERICAL STUDY OF NON-UNIFORM TIP CLEARANCE EFFECTS ON THE PERFORMANCE AND FLOW FIELD IN A CENTRIFUGAL COMPRESSOR [PDF]
Journal of computational fluids engineering, 2013 This paper presents a numerical investigation of the influences of various non-uniform tip clearances on the performance and flow field in a centrifugal compressor. Numerical simulations were conducted for three centrifugal compressor impellers in which the tip clearance height varied linearly from the leading edge to the trailing edge.
Y.H. Jung, J.Y. Park, M. Choi, J.H. Baek
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Volume 1: Turbomachinery, 1994 An axially non-uniform type of rotor tip clearance was conceived and tried on a single stage compressor. This concept is based on the advantages of a smaller tip clearance in the front portion of the blade and a larger clearance in the rear portion which allows a higher tip leakage flow to interact with the passage secondary flow, casing wall boundary ...
K. Mohan, S. A. Guruprasad
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Aerospace, 2023 In the typical structure of a turboshaft aero-engine, the mass flow of the cooling air in the rotor-stator cavity is controlled by the inlet seal labyrinth.
Yu Shi +6 more
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Energies, 2020 The tip clearance has an important effect on the performance of an engine compressor. While the impact of tip clearance on a concentric compressor has been widely explored in previous research, the flow field distribution of an eccentric compressor has ...
Chao Jiang +3 more
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Energies, 2022 Regulations from the European Union move towards a constant reduction of pollutant emissions to match the single-digit goal by 2050. Original equipment manufacturers propose newly designed components for the lifetime extension ofgGas turbines that both ...
Lorenzo Laveneziana +7 more
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Effects of non-axisymmetric tip clearance on axial compressor performance and stability [PDF]
, 1997 September 1997Statement of responsibility on title-page reads: M.B. Graf, T.S. Wong, E.M. Greitzer, F.E. Marble, C.S. Tan, H-W Shin, D.C. WislerIncludes bibliographical references (pages 34-35)The effects of circumferentially non-uniform tip clearance on
Graf, Martin Bowyer +6 more
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