Results 1 to 10 of about 55,419 (236)

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, Zhiyi Yu, Ke Zhang, Zheng Liu   +3 more
doaj   +2 more sources

Numerical Investigation of Unsteady Rotor–Stator Interaction Mechanism and Wake Transportation Characteristics in a Compressor with Non-Uniform Tip Clearance Rotor

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, Zhipeng Li, Qijiao Wang, Zhihui Xu, Zhiyuan Cao   +4 more
doaj   +2 more sources

Fast-moving Mesh Method and Its Application to Circumferential Non-uniform Tip Clearance in a Single-stage Turbine [PDF]

Journal of Applied Fluid Mechanics
The 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
doaj   +2 more sources

Swirl Flow and Heat Transfer in a Rotor-Stator Cavity with Consideration of the Inlet Seal Thermal Deformation Effect

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, Shuiting Ding, Peng Liu, Tian Qiu, Chuankai Liu, Changbo Qiu, Dahai Ye   +6 more
doaj   +1 more source

Conjugate Heat Transfer Analysis of the Aero-Thermal Impact of Different Feeding Geometries for Internal Cooling in Lifetime Extension Processes for Heavy-Duty Gas Turbines

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, Nicola Rosafio, Simone Salvadori, Daniela Anna Misul, Mirko Baratta, Luca Forno, Massimo Valsania, Marco Toppino   +7 more
doaj   +1 more source

Numerical Investigation on Flow Field Distribution of Eccentric Compressors Based on Steady and Unsteady CFD Methods

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, Jun Hu, Jiayu Wang, Longteng Cong   +3 more
doaj   +1 more source

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, Greitzer, E. M. (Edward M.), 1941-, Marble, Frank E., Shin, Hyoun-Woo, Tan, Choon Sooi, Wisler, David C., 1941-, Wong, Thomas S. (Thomas Sheung)   +6 more
core   +1 more source

Fluid Flow Equations for Rotordynamic Flows in Seals and Leakage Paths [PDF]

, 2001
Fluid-induced rotordynamic forces produced by the fluid in an annular seal or in the leakage passage surrounding the shroud of a pump or turbine, are known to contribute substantially to the potential excitation forces acting on the rotor.
Brennen, C. E., Hsu, Y.
core   +1 more source

Numerical simulation of three-phase flow in an external gear pump using immersed boundary approach [PDF]

, 2019
This paper presents a three-phase fully compressible model applied along with an immersed boundary model for predicting cavitation occurring in a two dimensional gear pump in the presence of non-condensable gas (NCG).
Gavaises, M., Karathanassis, I. K., Koukouvinis, F., Murali-Girija, M.   +3 more
core   +1 more source

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
openaire   +1 more source