A flow model for tip leakage flow in turbomachinery using a square duct with a longitudinal slit
Sign Up to like & getrecommendations! Published in 2019 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2019.105460
Abstract: Abstract A physical flow model to simulate the tip leakage flow (TLF) is proposed, in order to reproduce the jet flow/main flow shear mechanism of tip leakage vortex (TLV) roll-up in turbomachinery. The model is… read more here.
Keywords: tip leakage; leakage flow; model; flow model ... See more keywords
Turbocharger turbine rotor tip leakage loss and mass flow model valid up to extreme off-design conditions with high blade to jet speed ratio
Sign Up to like & getrecommendations! Published in 2018 at "Energy"
DOI: 10.1016/j.energy.2018.01.083
Abstract: Abstract Due to the power consumption restriction of the turbocharger compressor, common turbine maps are rather narrow. To extrapolate them, reliable physical submodels are needed that are valid for broad ranges. Plenty of research has… read more here.
Keywords: tip leakage; turbocharger; leakage; speed ... See more keywords
Contribution to tip leakage loss modeling in radial turbines based on 3D flow analysis and 1D characterization
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Heat and Fluid Flow"
DOI: 10.1016/j.ijheatfluidflow.2019.108423
Abstract: Abstract The characterization of tip leakage flow plays an important role for one-dimensional loss modeling and design in radial turbine research. Tip leakage losses can be expressed as function of fluid momentum and mass flow… read more here.
Keywords: characterization; geometry; tip; tip leakage ... See more keywords
Effect of tip clearance, winglets, and shroud height on the tip leakage in axial flow fans
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Refrigeration"
DOI: 10.1016/j.ijrefrig.2018.07.010
Abstract: Abstract This study is concerned with the improvement in efficiency of axial flow fans that are being used in numerous fields including outdoor units of air conditioners. The tip leakage flow occurring between a blade… read more here.
Keywords: tip leakage; flow fans; flow; axial flow ... See more keywords
Vortex suppression of the tip leakage flow over a NACA0009 hydrofoil via a passive jet induced by the double-control-hole
Sign Up to like & getrecommendations! Published in 2021 at "Ocean Engineering"
DOI: 10.1016/j.oceaneng.2021.109647
Abstract: Abstract Tip leakage vortex (TLV) frequently occurring in bladed energy conversion machines may induce flow loss as well as cavitation. The double-curved-hole (DC hole) structures located at the 10%–25% chord near the leading edge of… read more here.
Keywords: hole; vortex; control; tip leakage ... See more keywords
Tip leakage vortex trajectory and dynamics in a multiphase pump at off-design condition
Sign Up to like & getrecommendations! Published in 2020 at "Renewable Energy"
DOI: 10.1016/j.renene.2020.01.024
Abstract: Because of the clearance and pressure difference between the pressure side (PS) and the suction side (SS), the tip leakage flow developed and evolved into tip leakage vortex (TLV). The relationship between the swirling strength… read more here.
Keywords: tip leakage; tlv; clearance; tip ... See more keywords
Numerical simulation on hydraulic performance and tip leakage vortex of a slanted axial-flow pump with different blade angles
Sign Up to like & getrecommendations! Published in 2021 at "Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science"
DOI: 10.1177/09544062211032989
Abstract: The blade angle has a great effect on hydraulic performance and internal flow field for axial-flow pumps. This research investigated the effect of the blade angle on hydraulic performance and tip leakage vortex (TLV) of… read more here.
Keywords: tip leakage; blade; tlv; axial flow ... See more keywords
Improvement in the stability of a turbocharger centrifugal compressor by tip leakage control
Sign Up to like & getrecommendations! Published in 2017 at "Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering"
DOI: 10.1177/0954407016656543
Abstract: The occurrence of surge or stall in a centrifugal compressor and the role of the tip clearance flow in the instability in the centrifugal compressor are investigated in this study. A computational method is used… read more here.
Keywords: tip leakage; compressor; centrifugal compressor; injection ... See more keywords
Effects of blade rotation on axial turbine tip leakage vortex breakdown and loss
Sign Up to like & getrecommendations! Published in 2017 at "Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering"
DOI: 10.1177/0954410016656879
Abstract: The tip leakage vortex breakdown occurs under a few conditions in modern turbines, which leads to extra vortex breakdown losses, but the mechanisms of vortex breakdown and its influencing factors still remain unclear. This paper… read more here.
Keywords: tip leakage; blade rotation; leakage vortex; vortex breakdown ... See more keywords
Experimental and numerical investigation of tip leakage vortex cavitation in an axial flow pump under design and off-design conditions
Sign Up to like & getrecommendations! Published in 2020 at "Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy"
DOI: 10.1177/0957650920906295
Abstract: The interaction of tip leakage flow and main flow in an axial flow pump can induce the tip leakage vortex, which causes the unstable flow and complex cavitation structures. In the present research, the modified… read more here.
Keywords: tip leakage; cavitation; leakage vortex; design ... See more keywords
Numerical investigation into the mechanism regarding the inception and evolution of flow unsteadiness induced by the tip leakage flow in a transonic compressor
Sign Up to like & getrecommendations! Published in 2020 at "Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy"
DOI: 10.1177/0957650920910597
Abstract: Unsteady flow in the blade tip region of modern axial flow compressors is one of the sources of loss, noise, and blade vibration. In some cases, it is potentially linked to stall inception. In this… read more here.
Keywords: tip leakage; induced tip; flow unsteadiness; leakage vortex ... See more keywords