Boundary layer measurements on the pressure and suction sides of a turbine inlet guide vane

Bario, F.; Beral, C.

doi:10.1016/s0894-1777(97)10043-7

Cited by 19 publications

(6 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The increase of streamwise and normal velocity fluctuations and of the correlated apparent Reynolds shear stress outside the wall region during the transition is due to the intermittent switching of the velocity from laminar to turbulent state. This phenomenon is clearly observable also in the detailed boundary layer measurements of Bario and Beral [15] on a turbine inlet guide vane. In the turbulent boundary layer, beyond s/s max =0.65, a decrease of the turbulent dissipation occurs outwards the region near to the wall, compared with the transitional regime.…”

Section: Dissipation Mechanismmentioning

confidence: 61%

An experimental investigation of the dissipation mechanisms in the suction side boundary layer of a turbine blade

et al. 2008

View full text Add to dashboard Cite

The present work is part of an extensive experimental activity carried out by the authors in recent years aimed at investigating the boundary layer transition phenomenon in turbine blades. The large scale of the cascade and the use of advanced LDV instrumentation and precision probe traversing mechanism resulted in high degree of spatial resolution and high accuracy of measurements. The main dissipation mechanism determining the profile losses in turbomachinery blades is the work of deformation of the mean motion within the boundary layer operated by both viscous and turbulent shear stresses. In the present paper, the local viscous and turbulent deformation works have been directly evaluated from the detailed measurements of boundary layer mean velocity and Reynolds shear stress. The results show the distributions and the relative importance of the viscous and turbulent contributions to the loss production, in relation with the boundary layer states occurring along the turbine profile.

show abstract

Section: Dissipation Mechanismmentioning

confidence: 61%

An experimental investigation of the dissipation mechanisms in the suction side boundary layer of a turbine blade

et al. 2008

View full text Add to dashboard Cite

show abstract

“…Non-intrusive methods have also been adopted to investigate the performance of IGVs. Bario and Beral 26 measured the mean and fluctuating velocities on the pressure and suction side of a turbine IGVs by means of LDV. Measurement results revealed the evolution of the boundary layer in different inlet turbulent conditions.…”

Section: Experimental Measurement and Numerical Simulationmentioning

confidence: 99%

“…Some authors 23–28 have reported that the unsteady interaction of IGVs was closely related to its wake transport within the passage of IGVs and impeller, as well as the vaneless space between them. The forcing functions of IGVs were studied to explain its influence on rotor blade row.…”

Section: Performance Of Compressor and Pump With Igvsmentioning

confidence: 99%

A review of prewhirl regulation by inlet guide vanes for compressor and pump

Liu

Tan

Cao

2018

Proceedings of the Institution of Mechanical Engineers, Part A:

View full text Add to dashboard Cite

To achieve the energy conservation and sustainable development, the prewhirl regulation by inlet guide vanes is proposed and rapidly developed for the compressor and pump. The inlet guide vanes change the flow pattern at the impeller inlet especially the velocity circulation, and then influence the performance of compressor and pump. This paper presents and discusses researches on the prewhirl regulation by inlet guide vanes. Researches include mechanism analysis of prewhirl regulation, experimental and numerical studies on the flow field, performance of compressor and pump with inlet guide vanes, influence of geometric parameters on performance of inlet guide vanes, and failure mode analysis and corresponding flow control methods.

show abstract

“…Gupta et al [4] found that the straight vane could generate the swirling flow with the low level of turbulence. The following studies [5][6][7] showed that the guide vane with same radius in a central body could establish a symmetric flow field, and thus the droplets could be removed from gas [8][9][10]. In addition, Dirkzwager [11] first introduced this kind of swirl element into an oil-water separator, and successfully carried out the separation of oil and water base on the strong swirling field generated by the guide vane.…”

Section: Introductionmentioning

confidence: 99%

Flow field of continuous phase in a vane-type pipe oil–water separator

Shi

2015

Experimental Thermal and Fluid Science

View full text Add to dashboard Cite

a b s t r a c tIn this work, the measurements of the swirling field of continuous phase in a new vane-type pipe separator have been carried out to validate the separation characteristics by the Particle Image Velocimetry. The radial, tangential and axial velocities were obtained. The results show that the new separator can successfully form a symmetrical swirling field. The transition region of the tangential velocity between the free vortex and the forced vortex shows a wider range than that in the traditional hydrocyclone. The axial velocity is always positive from the pipe wall to the central area and appears three-peak distribution. The tangential and axial velocities are dependent to the inlet flow rate, and yet show a low sensitivity to the ratio of flow split when the ratio of flow split is less than 13.1%. These results are helpful to the optimal design of the downhole oil/water separator.

show abstract

Boundary layer measurements on the pressure and suction sides of a turbine inlet guide vane

Cited by 19 publications

References 10 publications

An experimental investigation of the dissipation mechanisms in the suction side boundary layer of a turbine blade

An experimental investigation of the dissipation mechanisms in the suction side boundary layer of a turbine blade

A review of prewhirl regulation by inlet guide vanes for compressor and pump

Flow field of continuous phase in a vane-type pipe oil–water separator

Contact Info

Product

Resources

About