Tip clearance has a great effect on the flow and pressure fluctuation characteristics in multiphase pump, especially at multiple operating points. The phase distribution tip pump are revealed using CFD (computational fluid dynamics) technology high-speed photography methods. In this paper, distribution, gas-liquid two-phase velocity slip, intensity comprehensively analyzed. Results show with in...

Significance of the Problem Control of blade-tip clearance in the compressor and turbine sections of gas turbine engines can improve efficiency, minimize leakage flow, and shorten engine development time. Tip clearance varies throughout different operating conditions (e.g., start-up, idle, full power, shut-down) because of different radial forces and different thermal expansion coefficients and...

A Blade Tip Timing (BTT) system enables the measurement of turbomachinery blade vibrations by means of contactless sensors mounted in the casing. In addition, the so-called Blade Tip Clearance (BTC) measurement system ensures the monitoring of the existing running gaps between the blade tip and the casing. This paper focuses on the results achieved so far using a novel magnetoresistive sensor f...

Flow through mixed flow compressor stage was evaluated theoretically to understand internal flow behaviour. Various shroud configurations in terms of clearance has been considered to see the effect of clearance on compressor performance. The blade to blade relative flow variation from impeller inlet to outlet was evaluated through theoretical analysis. A 3D viscous commercial code Fluent was us...

A compressor tip clearance flow control scheme is explored using fluidic actuators, the so-called " synthetic jets " , on the casing wall acting over the clearance region. The analysis of flow visualization images show the largest increase in mixing level when forced at the optimal frequency. A reduction in the tip clearance-related blockage is demonstrated using an array of synthetic jet actua...