This paper reviews the design optimization of wind turbine blades through investigating the design methods and analyzing the performance of the blades. The current research work in this area include wind turbine blade geometric design and optimization, aerodynamics analysis, wind turbine blade structural design and dynamics analysis. Blade geometric design addresses the design parameters, inclu...

BACKGROUND Subtrochanteric femoral shortening osteotomy is a method of surgical treatment of lower limb discrepancy (LLD). It is less commonly used due to numerous limitations and the resulting decrease in height, which is an undesirable effect for most patients. The aim of this study was to analyze the results and complications of treatment of leg length discrepancy (LLD) by femoral shortening...

The geometry of a compressor leading edge has an important effect on the aerodynamic performance at off-designed incidence angle. current geometric design methods are usually developed based flow characteristics designed However, few research focuses quantitative rules angle in cascade. This situation restricts further optimization and development method. In this paper, starting from potential ...

INTRODUCTION: The use of the anterior cervical plates has improved the postoperative fusion rates following multiple level cases. There are a number of plates available today and each plate addresses a different design philosophy. Fixed angle plates maintain a constant angle between the screw and the plate and have been implicated in stress shielding of the interbody graft resulting in pseudoar...

The control strategies of blade loads are proposed for the characteristics of blade stresses of variable-speed variablepitch wind turbine. Blade loads are divided into two static and dynamic components. The pitch angle and generator torque are controlled by Single neuron PID controller in the static part. Variables are converted from rotational coordinate to fixed coordinate through multi-blade...

A surgical technique using a round-tip scarifier to create smooth scleral bed surfaces was postulated and performed on patients. During dissection in the right-handed direction, the blade should be rotated approximately 15° counter-clockwise around the axis of its handle from the bed-surface plane; the blade is then rotated clockwise for incision in the opposite direction. The handle is simulta...

Influence of diffuser vane position on dangerous blade vibration due to blade flow interactions at part load operating condition was investigated in a centrifugal compressor. By means of some measurement and analysis techniques a mechanism of interaction between blade vibration and circumferential flow condition in the impeller with vaned diffuser was determined, which is a cause of dangerous b...

In the current paper, the effect of length and angle of a splitter plate on hydro-thermal field in a range of Reynolds number from 40 to 1000 are numerically studied by solving the two-dimensional Navier-Stokes equations. For discretization of governing equations, PISO algorithm was imposed to segregate the pressure-velocity coupled equations, and second-order upwind discretization scheme was a...

In the present paper a study of the time dependent transonic flow field around a single compressor blade in a Laval nozzle is presented. For the investigation the PIV method has been employed because of its ability to deliver instantaneous flow field information across an illuminated plane with high spatial and temporal resolution. From these instantaneous PIV measurements the mean velocity fie...

The goal of this project is to report on some computational investigations about the return flow passages. The return flow channel provides the connection and carries the flow between two stages of a multistage centrifugal compressor. Of course, deswirl vanes are indispensable between the inlet and outlet section, because usually the inlet flow angle, which comes from the impeller, is 70◦ − 75◦...