Results 11 to 20 of about 13,520 (258)

RANS computations of a confined cavitating tip-leakage vortex [PDF]

European Journal of Mechanics - B/Fluids, 2018
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Decaix, Jean, Dreyer, Matthieu, Balarac, Guillaume, Farhat, Mohamed, Munch, Cécile   +4 more
openaire   +5 more sources

Large Eddy Simulation of Hydrofoil Tip Leakage Vortex

Journal of Physics: Conference Series, 2023
Abstract The axial-flow turbomachinery is important in water supply and drainage. However, there is a gap between the blade tip and the casing, which is easy to cause tip leakage vortex. Tip leakage of axial-flow turbomachinery has bad impact on the operation stability.
Zilong Hu, Jiale Pan, Ran Tao, Yanzhao Wu, Di Zhu, Ruofu Xiao   +5 more
openaire   +1 more source

Engineering Application of an Identification Method to Shock-Induced Vortex Stability in the Transonic Axial Fan Rotor

International Journal of Aerospace Engineering, 2021
In the present paper, the steady RANS (Reynolds-Averaged Navier-Stokes) simulations based on our independently developed CFD (Computational Fluid Dynamics) solver NUAA-Turbo 2.0, are carried out to investigate the shock wave/tip leakage vortex (SW/TLV ...
Yan Xue, Ning Ge
doaj   +1 more source

Investigation of Tip Leakage Vortex Structure and Trajectory in a Centrifugal Pump with a New Omega Vortex Identification Method

Applied Sciences, 2022
Semi-open centrifugal pumps are widely used in various fields. However, the tip leakage vortex (TLV) has a malign effect on the impeller flow field.
Bing Qian, Yinhui Cai, Qiang Ding, Daoli Zhao, Weipeng Sun, Like Wang   +5 more
doaj   +1 more source

Influence of Shock Wave on Loss and Breakdown of Tip-Leakage Vortex in Turbine Rotor with Varying Backpressure

Applied Sciences, 2021
In modern turbine rotors, tip-leakage flow is a common phenomenon that accounts for about 1/3 of the stage loss. Studies show that as the imposed load increases, a shock wave appears in the tip region, which causes a significant interference on the ...
Zuojun Wei, Guangming Ren, Xiaohua Gan, Ming Ni, Weijie Chen   +4 more
doaj   +1 more source

Analysis of Tip Clearance Effect on the Transportation Characteristics of a Multiphase Rotodynamic Pump Based on the Non-Uniform Bubble Model

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   +1 more source

Energy Performance and Flow Patterns of a Mixed-Flow Pump with Different Tip Clearance Sizes

Energies, 2017
Tip clearance between blade end and shroud is inevitable in pump operation and of great importance on pump energy performance and pressure fluctuation. As the tip clearance size increases, the head and efficiency of the mixed flow pump drop accordingly ...
Yabin Liu, Lei Tan, Yue Hao, Yun Xu
doaj   +1 more source

Effects of Tip Clearance Size on Energy Performance and Pressure Fluctuation of a Tidal Propeller Turbine

Energies, 2020
Unavoidable tip clearance between blade tip and casing shroud plays an important role in the performance and characteristics of a tidal propeller turbine.
Bao Ngoc Tran, Haechang Jeong, Jun-Ho Kim, Jin-Soon Park, Changjo Yang   +4 more
doaj   +1 more source

Numerical Prediction of the Aerodynamics and Acoustics of a Tip Leakage Flow Using Large-Eddy Simulation

International Journal of Turbomachinery, Propulsion and Power, 2021
A Large-Eddy Simulation of the tip leakage flow of a single airfoil is carried out. The configuration consists of a non-rotating, isolated airfoil between two horizontal plates with a gap of 10 mm between the tip of the airfoil and the lower plate.
David Lamidel, Guillaume Daviller, Michel Roger, Hélène Posson   +3 more
doaj   +1 more source

Experimental study of endwall flow in a low-speed linear compressor cascade: effect of over-tip leakage [PDF]

, 2017
This paper describes the study of endwall flow modification due to over-tip leakage flow in axial compressor blades. Un-shrouded axial compressor stator and rotor blades in aero-engines and land based gas turbines are subjected to over-tip leakage flow ...
Kanjirakkad, Vasudevan
core   +1 more source