Results 221 to 230 of about 22,676 (265)
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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.
Y Wu, W Chu
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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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The Tip Leakage Vortex Shed from an Unsteady Tip Clearance Flow
34th AIAA Fluid Dynamics Conference and Exhibit, 2004*† ‡ , The interaction between the rotor blade tip leakage flow and inflow disturbances, such as encountered in shrouded marine propulsors, was simulated in the Virginia Tech Linear Cascade Wind Tunnel equipped with a moving endwall system. The idealized periodic inflow unsteadiness was generated using vortex generator pairs upstream of the blade row ...
Nanyaporn Intaratep +2 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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Broaband Noise Prediction Models And Measurements of Tip Leakage Flows
14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference), 2008Further experimental analysis of a tip leakage flow and of its associated broadband noise generation is investigated. Based on simultaneous 2 D LDA, unsteady wall pressure and far field measurements, a low frequency domain in the far field spectrum is related to the tip leakage vortex and its interaction with the blade t ip.
Grilliat, Julien +4 more
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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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Aerothermal Investigations of Tip Leakage Flow in Axial Flow Turbines—Part III: TIP Cooling
Journal of Turbomachinery, 2008Contours of heat transfer coefficient and effectiveness have been measured on the tip of a generic cooled turbine blade, using the transient liquid crystal technique. The experiments were conducted at an exit Reynolds number of 2.3×105 in a five-blade linear cascade with tip clearances of 1.6% and 2.8% chord and featuring engine-representative cooling ...
P. J. Newton +6 more
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Tip Leakage Flow Characteristics Downstream of an Axial Flow Fan
Volume 1: Turbomachinery, 1996The three-dimensional viscous flow characteristics and the complex vortex system downstream of the rotor of an industrial exial fan have been determined by an experimental investigation using hot-wire anemometer. Single-wire slanted and straight type probes have been rotated about the probe axis using a computer controlled stepper motor.
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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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Characteristics of tip leakage flow inside the tip clearance of an axial compressor
Physics of FluidsThe study of flow field characteristics inside the tip clearance is essential for understanding tip leakage flow (TLF) generation mechanisms. This paper investigates the TLF flow field in a single-stage axial compressor using a particle image velocimetry visualization system, alongside proper orthogonal decomposition and omega vortex identification ...
Zhihong Liao +5 more
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