Globally faster consumption of hydrocarbon fuel in the transport sector is posing threat to environmental and ecological imbalances and thereby depletion of hydro-carbon fuel is causing another challenge to oil reserves. In view of these issues extensive researches are being carried out to explore the alternative energy source and or to find out appropriate energy conversion system. The atmosph...

In this paper, a new methodology is proposed to reduce the vortex-induced vibration (VIV) and improve the performance of the stay vane in a 200-MW Francis turbine. The process can be divided into two parts. Firstly, a diagnosis method for stay vane vibration based on field experiments and a finite element method (FEM) is presented. It is found that the resonance between the Kármán vortex and th...

The study of unsteady aerodynamic phenomena in wind tunnels is supported by gust-generating devices capable generating adjustable magnitude and periodicity velocity fluctuations a flowfield. Gusts are typically generated actively introducing moving vanes to direct the flow, or passively tailoring boundary layer growth shape tunnel. flow facility used here student-built closed-return low-speed t...

The physical performance characteristics of composite materials used for vanes in rotary, sliding-vane compressors, in general, are several orders of magnitude more difficult to quantify for design purposes than most homogeneous materials. This arises from the numerous variables that influence the response of these materials under the severe environmental conditions existing in such compressors...

The performance of a diffuser in a pump stage depends on its configuration and placement within the stage. The influence of vane shape on the hydrodynamic performance of a diffuser has been studied. The goal of this effort has been to improve the performance of a pump stage by optimizing the shape of the diffuser vanes. The shape of the vanes was defined using Bezier curves and circular arcs. S...

In this study, CBR and Shear Vane tests, which are common test methods used in determining the bearing capacity shear strength of highway pavement subgrade material, were applied effect changing water content on results was investigated. It is aimed to determine accuracy these expressions by obtaining parameters material with different contents from laboratory experiments comparing obtained emp...