Results 211 to 220 of about 42,687 (263)

Balloon-occluded Retrograde Transvenous Obliteration for Gastric Varices Draining into the Gastrocaval Shunt. [PDF]

Interv Radiol (Higashimatsuyama)
Miyayama S, Yamashiro M, Sugiura T, Ogawa N, Ozaki F, Sakuragawa N.   +5 more
europepmc   +1 more source

Protocol for minimizing off-target neuronal activation during optical stimulation in vivo. [PDF]

STAR Protoc
Weiler S, Vélez-Fort M, O'Hara L, Lenzi SC, Amaniti EM, Margrie TW.   +5 more
europepmc   +1 more source

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Tip Leakage in a Centrifugal Impeller

Journal of Turbomachinery, 1989
The effects of tip leakage have been studied using a 1-m-dia shrouded impeller where a leakage gap is left between the inside of the shroud and the impeller blades. A comparison is made with results for the same impeller where the leakage gap is closed. The static pressure distribution is found to be almost unaltered by the tip leakage, but significant
T. Z. Farge, M. W. Johnson, T. M. A. Maksoud   +2 more
openaire   +1 more source

Tip leakage reduction through tip injection in turbomachines

22nd Joint Propulsion Conference, 1986
This paper descr ibes an experimental s tudy on t i p leakage flow reduct ion through t i p i n j e c t i o n . A s i n g l e blade was placed i n the test s e c t i o n of a wind-tunnel wi th a gap between the t i p of t h e blade and t h e top w a l l .
M. POUAGARE, W. WEINHOLD
openaire   +1 more source

Effect of arbitrary blade tip design on tip leakage flow

Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 2019
Tip geometry modification is frequently used to suppress the tip leakage flow in the turbine cascade however a universally beneficial tip geometry modification design has not been fully discovered. In this paper, the two-surface coupling arbitrary blade tip design method in three-dimensional physical space which satisfies the simple trigonometric ...
Jiahui Jin, Yanping Song, Jianyang Yu, Fu Chen   +3 more
openaire   +1 more source

Tip Gap Effects on the Unsteady Behavior of a Tip Leakage Vortex

AIAA Journal, 2007
The effects of tip gap on the unsteady behavior of a tip leakage vortex downstream of an idealized axial compressor rotor blade have been investigated in a linear cascade wind tunnel, extending the study of Ma and Devenport. The wind tunnel features a moving end wall to simulate the relative motion between the rotor and casing, and vortex generator ...
Ruolong Ma, William J. Devenport
openaire   +1 more source

PIV Measurements of a Tip Leakage Vortex

SNAME 26th American Towing Tank Conference, 2001
The tip-leakage vortex occurring on a ducted rotor was examined using both three component Laser Doppler Velocimetry (LDV) and planar Particle Imaging Velocimetry (PIV). The vortex strength and core size were examined for different vortex cross sections downstream of the blade trailing edge. The variability of these quantities are observed with PIV and
Carolyn Q. Judge, Ghanem F. Oweis, Steven L. Ceccio, Stuart D. Jessup, Christopher J. Chesnakas, David J. Fry   +5 more
openaire   +1 more source

Tip Leakage Losses in Subsonic and Transonic Blade-Rows

Volume 7: Turbomachinery, Parts A, B, and C, 2011
In this paper the effect of blade-exit Mach number on unshrouded turbine tip-leakage flows is investigated. Previously published experimental data of a high-pressure turbine blade are used to validate a CFD code, which is then used to study the tip-leakage flow at blade-exit Mach numbers from 0.6 to 1.4.
Andrew P. S. Wheeler, Theodosios Korakianitis, Shashimal Banneheke   +2 more
openaire   +2 more sources