[PDF] Top 20 The effect of tip clearance flows on performance of axial flow compressors

... 9 AVERAGE WORK COEFFICIENT AS A FUNCTION OF TIP CLEARANCE FOR VARIOUS FLOW RATES.[r] ... See full document

... the flow when the second blade of the tandem blades is positioned in the "no gap nozzle effect", Figure ...the flow behavior along the ...the axial and tangential displacements of the ... See full document

... The effect of rotor tip clearances in turbomachinery applications has been a primary research interest for nearly 80 ...increased tip clearance in axial flow compressors ... See full document

... in compressors with small clearance is vorticity shed from a flow separation at the leading edge of the rotor ...small tip-clearance, the vortex is swept across the blade passage and ... See full document

... The following discussion will briefly review past stall inception investigation methodology in light of the new observations made in the present study. As was discussed in Section 2.3.2 of the Literature Review, most ... See full document

... the performance prediction of an axial compressor ...fluid. Performance parameters such as total pressure ratio and polytropic efficiency predicted using the low-Reynolds model show a closer ... See full document

... the effect of discrete micro tip injection on unsteady tip clearance flow pattern in an isolated axial compressor rotor is presented, intending to better understand the ... See full document

... overall performance for mass flow, temperature ratio and isentropic efficiency are the ...global performance was not significantly affected by the damaged blade. Flow blockage was only found ... See full document

... the effect of unsteady tip clearance flow in axial compressor rotor used in an industrial gas ...the tip clearance ...of axial compressor rotor is drawn in ... See full document

... rotor tip gap on the performance of a one and half stage axial compressor are investigated in detail with a numerical simulation based on LES and available PIV ...main flow physics, including ... See full document

... The effect of the rotor tip gap size on the compressor flow field has been widely ...the tip gap is increased in axial ...the flow at near stall operation with a large tip ... See full document

... the tip clearance-to-staggered spacing ratios for all experimental data in ...end-wall flow model, these references provide important insight into the end-wall boundary layer ... See full document

... of tip clearance is smaller once the diffuser dimension is reduced, or the pinch is ...the effect of tip clearance pinched diffusers are less ...diffusers compressors are less ... See full document

... swirling flow around a rotating disk in a cylin- drical ...The flow develops in the radial clearance between the disk tip and the side wall of the casing as well as in the axial ... See full document

... Wahiba Yaici , Mohamed Ghorab, Evgueniy Entchev et al [4] In the present paper a numerical study was performed to predict the influences of the inlet air flow distribution on the performance of heat ... See full document

... as axial inflow are specified as the inlet boundary condition; while the static pressure is specified at the outlet assuming radial ...fan flow field at near-stall point, so far there is no accurate ... See full document

... 31 abstracted geometric parameters could be directly used for efficient optimisation of profile thermodynamic performance. Of the leakage paths shown in Figure 2-5, the radial gap and interlobe gap are directly ... See full document

... The performance of a conventional Savonius rotor (that has a half circle shaped of 180° blade arc angle, without shaft and with zero clearance) was experimentally tested under the same experimental ... See full document

... significant effect on the solution towards which the model ...but flow is forced through it in the design direction, then the compressor operates in the second of the two modes possible in the fourth ...The ... See full document

... Irfan Syarif Arief 1 , Tony Bambang Musriyadi 2 ,Ahmad Dwi Arta Je Mafera 3 , Abstract  one type of ship propeller is a ducted propeller. Ducted propellers are propellers with sheath or duct that can increase thrust on ... See full document