Results 271 to 280 of about 93,522 (307)
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Behavior of Tip Leakage Flow in an Axial Flow Compressor Rotor
Volume 6: Turbomachinery, Parts A and B, 2006The current paper reports on investigations with an aim to advance the understanding of the flow field near the casing of a small-scale high-speed axial flow compressor rotor. Steady three dimensional viscous flow calculations are applied to obtain flow fields at various operating conditions.
Yanhui Wu +3 more
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Tip Leakage Flow on the Transonic Compressor Rotor
Transactions of the Korean Society of Mechanical Engineers B, 2003It is known that tip clearance flows reduce the pressure rise, flow range and efficiency of the turbomachinery. So, the clear understanding about flow fields in the tip region is needed to efficiently design the turbomachinery. The Navier-Stokes code with the proper treatment of the boundary conditions has been developed to analyze the three ...
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Behaviour of tip-leakage flow in an axial flow compressor rotor
Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 2007The current paper reports on investigations with an aim to advance the understanding of the flowfield near the casing of a small-scale high-speed axial flow compressor rotor. Steady three-dimensional viscous flow calculations are applied to obtain flowfields at various operating conditions. To demonstrate the validity of the computation, the numerical
Y Wu, W Chu
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Vortex Lattice Method Investigation of Tip-Leakage Flow
Journal of TurbomachineryAbstract The use of a vortex lattice method (VLM) is investigated on a tip-leakage flow single-blade configuration (NACA 0012) for a wide range of tip gaps. The aim is to estimate the circulation of the tip-leakage vortex (TLV) detaching from the blade.
Christophe Montsarrat, Jérôme Boudet
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Prediction of Tip-Leakage Flow in Axial Flow Compressor With Second Moment Closure
Volume 6: Turbomachinery, Parts A and B, 2006An innovative analysis based on second-moment closure (SMC), incorporating proper modelling of low-Re-number and wall proximity effects is adopted in conjunction with numerical model based on an in-house parallel finite element code for the prediction of a 3D linear compressor cascade flow with tip clearance.
BORELLO, Domenico +2 more
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Control of compressor tip leakage flow using plasma actuation
Aerospace Science and Technology, 2019Abstract Control of the compressor tip leakage flow using plasma actuation is studied in this paper based on a compressor cascade model. Three types of plasma actuation layouts are designed: the axial plasma actuation which induces body force along the axial flow direction, the normal plasma actuation which induces body force normal to the interface ...
Haideng Zhang +4 more
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Unsteady Periodic Behavior of a Disturbed Tip-Leakage Flow
AIAA Journal, 2006The unsteady periodic behavior of a tip-leakage flow downstream of a simulated axial compressor rotor has been studied. A linear cascade wind tunnel has been adapted to model this situation. The wind tunnel features a moving endwall to simulate the relative motion between the rotor and casing and vortex generators attached to the moving end wall that ...
Ruolong Ma, William J. Devenport
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Prediction of mean flow and over-tip shock distribution in pressure-driven tip leakage flows
Physics of FluidsThe flow across the blade tip clearance in turbomachinery is simplified as pressure-driven tip leakage flow (TLF) by isolating it from the mainstream. Based on schlieren visualization and numerical simulations, several common features of TLF are achieved. Consequently, a diffusion model is proposed to evaluate the mean flow and shock motions within the
Xiaolong Tang +3 more
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Turbine Pocket Blade: Structural Integrity and Tip Leakage Flow
Volume 7: Structures and Dynamics, Parts A and B, 2012The design of a turbine blade is a complex task involving the simultaneous optimization and compromise of different disciplines with the most important ones are aerodynamics and structures. Aerodynamics mainly involves optimizing blade profiles for minimum pressure loss while structures deals with fatigue and creep life.
Loc Q. Duong, Nagamany Thayalakhandan
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The Influence of Boundary Conditions on Tip Leakage Flow
Journal of Turbomachinery, 2013Much of the current understanding of tip leakage flow has been derived from detailed cascade studies. Such experiments are inherently approximate since it is difficult to simulate the boundary conditions that are present in a real machine, particularly the secondary flows convecting from the upstream stator row and the relative motion of the casing and
John D. Coull, Nicholas R. Atkins
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