Results 261 to 270 of about 94,894 (308)

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, William Devenport, Josh Staubs   +2 more
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Aerothermal Investigations of Tip Leakage Flow in Axial Flow Turbines—Part III: TIP Cooling

Journal of Turbomachinery, 2008
Contours 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, G. D. Lock, S. K. Krishnababu, H. P. Hodson, W. N. Dawes, J. Hannis, C. Whitney   +6 more
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Tip Leakage Flow Instability in a Centrifugal Compressor

Journal of Engineering for Gas Turbines and Power, 2019
Abstract In this paper, an unsteady tip leakage flow phenomenon is identified and investigated in a centrifugal compressor with a vaneless diffuser at near-stall conditions. This phenomenon is associated with the inception of a rotating instability in the compressor.
Teng Cao, Tadashi Kanzaka, Liping Xu, Tobias Brandvik   +3 more
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Squealer Tip Leakage Flow Characteristics in Transonic Condition

Volume 6A: Turbomachinery, 2013
The Over-Tip-Leakage (OTL) flow characteristics for a typical squealer tip of high pressure turbine blade, which consists of subsonic and transonic flow, have been numerically investigated in the present study, in comparison with the corresponding flat tip results. For the squealer tip employed, flow choking behavior still exists above the tip surface,
Wei Li, Hongmei Jiang, Qiang Zhang, Sang Woo Lee   +3 more
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Structure of Tip Leakage Flow in a Forward-Swept Axial-Flow Fan

Flow, Turbulence and Combustion, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lee, GH, Baek, JH, Myung, HJ
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Broaband Noise Prediction Models And Measurements of Tip Leakage Flows

14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference), 2008
Further 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, Jacob, Marc, Jondeau, Emmanuel, Roger, Michel, Camussi, Roberto   +4 more
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Tip Leakage Flow Characteristics Downstream of an Axial Flow Fan

Volume 1: Turbomachinery, 1996
The 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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Aero-Thermal Investigation of Tip Leakage Flow in Axial Flow Turbines: Part III — Tip Cooling

Volume 4: Turbo Expo 2007, Parts A and B, 2007
Contours 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 ...
P. J. Newton, G. D. Lock, S. K. Krishnababu, H. P. Hodson, W. N. Dawes, J. Hannis, C. Whitney   +6 more
openaire   +1 more source

Tip Leakage Flow In a Mixed-flow Pump

The numerical results used to describe the special flow features/characteristics of the mixed-flow pump in this chapter were obtained by employing the computational methodology described in Chapter 3 which includes the pump model, mesh generation, turbulence models and their near wall treatment, and the boundary conditions.
Wei Li, Leilei Ji, Ramesh Agarwal, Weidong Shi, Ling Zhou   +4 more
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Effect of Upstream Unsteady Flow Conditions on Rotor Tip Leakage Flow

Volume 5: Turbo Expo 2002, Parts A and B, 2002
A study has been conducted, using unsteady three-dimensional Reynolds-averaged Navier-Stokes simulations to determine the impact on rotor performance of the interaction between the stator wakes and rotor tip clearance flow. The key effects of the interaction are: (1) a decrease in loss and blockage associated with tip clearance flow; (2) an increase in
Borislav T. Sirakov, Choon S. Tan
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