Results 21 to 30 of about 93,460 (307)
Energies, 2020 Unavoidable tip clearance between blade tip and casing shroud plays an important role in the performance and characteristics of a tidal propeller turbine.
Bao Ngoc Tran +4 more
doaj +1 more source
International Journal of Rotating Machinery, 2011 The aerodynamic losses in gas turbines are mainly caused by profile loss secondary flow, and tip leakage loss. This study focuses on tip leakage flow of high-pressure turbine stages.
Hesham M. El-Batsh, Magdy Bassily Hanna
doaj +1 more source
Entropy, 2020 To investigate the influence of the change of tip clearance size on the control effect of the endwall suction, the effects of endwall suction on the aerodynamic performance of the axial compressor cascade were studied numerically.
Botao Zhang +3 more
doaj +1 more source
Fluid Flow Equations for Rotordynamic Flows in Seals and Leakage Paths [PDF]
, 2001 Fluid-induced rotordynamic forces produced by the fluid in an annular seal or in the leakage passage surrounding the shroud of a pump or turbine, are known to contribute substantially to the potential excitation forces acting on the rotor.
Brennen, C. E., Hsu, Y.
core +1 more source
Measurement and Prediction of Tip Leakage Losses in an Axial-Flow Transonic Turbine [PDF]
Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery, 1997 This paper presents a simple method for predicting tip leakage losses in transonic axial-flow turbines. The method is based upon experimental work conducted on a flat plate at 5° incidence and with isentropic exit Mach number of 1.26. The tip gap height was varied from zero up to 15% of chord.
M. Wehner +3 more
openaire +1 more source
AIP Advances, 2023 Internal steam leakage in steam turbines from the high-pressure side to the low-pressure side through clearances causes loss, resulting in reduced efficiency and potentially compromising the safe operation of the turbine.
Zhijia Lv +5 more
doaj +1 more source
Investigation of the tip-leakage losses in turbine axial stages
Journal of Physics: Conference Series, 2014 In turbomachinery, an influence of a tip-leakage flow on overall blade loss is crucial and its reduction is still worth striving for. In this paper a numerical analysis of the flow in tip seal of high-rotating gas turbine engine has been made. This analysis is a part of experimental research for testing the commercially used different tip seals ...
Szymański, Artur +3 more
openaire +3 more sources
Numerical investigation of tip clearance effects on the performance of ducted propeller
International Journal of Naval Architecture and Ocean Engineering, 2015 Tip clearance loss is a limitation of the improvement of turbomachine performance. Previous studies show the Tip clearance loss is generated by the leakage flow through the tip clearance, and is roughly linearly proportional to the gap size.
Ding Yongle, Song Baowei, Wang Peng
doaj +1 more source
Optimization Design and Analysis of Supersonic Tandem Rotor Blades
Energies, 2020 To explore the flow mechanism and improve the performance of supersonic tandem rotor blades, the supersonic rotor Rotor37 is taken as the prototype and redesigned to an original supersonic tandem rotor.
Ruochi Pan, Zhaoyun Song, Bo Liu
doaj +1 more source
Expander selection for an on board ORC energy recovery system [PDF]
, 2017 This paper deals with the comparison between volumetric expanders (screw, scroll and rotary vane) and an Inlet Forward Radial (IFR) micro turbine for the exploitation of an on board Organic Rankine Cycle (ORC) energy recovery system.
Capata, Roberto, Fabio, Pantano
core +1 more source